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End-to-End Scene Text Detection and Recognition System Resources

<p align='right'>Author: Canjie Luo, Chongyu Liu</p> <!-- MarkdownTOC --> <!-- /MarkdownTOC -->

<a id="1-datasets"></a>

1. Datasets

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1.1 Introduction

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1.2 Comparison of Datasets

<table cellspacing="0" border="0"> <colgroup span="18" width="85"></colgroup> <tr> <td colspan=18 height="20" align="center" valign=middle><b>Comparison of Datasets</b></td> </tr> <tr> <td rowspan=2 height="39" align="center" valign=top><b>Datasets</b></td> <td rowspan=2 align="center" valign=top><b>Language</b></td> <td colspan=3 align="center"><b>Image</b></td> <td colspan=3 align="center"><b>Text instance </b></td> <td colspan=3 align="center"><b>Text Shape</b></td> <td colspan=3 align="center"><b>Annotation level</b></td> <td colspan=4 align="center"><b><font face="Liberation Sans">Lexicon</font></b></td> </tr> <tr> <td align="center"><b>Total</b></td> <td align="center"><b>Train</b></td> <td align="center"><b>Test</b></td> <td align="center"><b>Total</b></td> <td align="center"><b>Train</b></td> <td align="center"><b>Test</b></td> <td align="center"><b>Horizontal</b></td> <td align="center"><b>Arbitrary-Quadrilateral</b></td> <td align="center"><b>Multi-oriented</b></td> <td align="center"><b>Char</b></td> <td align="center"><b>Word</b></td> <td align="center"><b>Text-Line</b></td> <td align="center" sdval="50" sdnum="2052;"><b><font face="Liberation Sans">50</font></b></td> <td align="center"><b><font face="Liberation Sans">1k</font></b></td> <td align="center"><b><font face="Liberation Sans">Full</font></b></td> <td align="center"><b><font face="Liberation Sans">None</font></b></td> </tr> <tr> <td height="20" align="center"><b>IC03</b></td> <td align="center"><font face="Liberation Sans">English</font></td> <td align="center" sdval="509" sdnum="2052;"><font face="Liberation Sans">509</font></td> <td align="center" sdval="258" sdnum="2052;"><font face="Liberation Sans">258</font></td> <td align="center" sdval="251" sdnum="2052;"><font face="Liberation Sans">251</font></td> <td align="center" sdval="2266" sdnum="2052;"><font face="Liberation Sans">2266</font></td> <td align="center" sdval="1110" sdnum="2052;"><font face="Liberation Sans">1110</font></td> <td align="center" sdval="1156" sdnum="2052;"><font face="Liberation Sans">1156</font></td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center">✓</td> <td align="center">✓</td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> </tr> <tr> <td height="20" align="center"><b>IC11</b></td> <td align="center">English</td> <td align="center" sdval="484" sdnum="2052;"><font face="Liberation Sans">484</font></td> <td align="center" sdval="229" sdnum="2052;"><font face="Liberation Sans">229</font></td> <td align="center" sdval="255" sdnum="2052;"><font face="Liberation Sans">255</font></td> <td align="center" sdval="1564" sdnum="2052;"><font face="Liberation Sans">1564</font></td> <td align="center">~</td> <td align="center">~</td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center">✓</td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center">✓</td> </tr> <tr> <td height="20" align="center"><b>IC13</b></td> <td align="center">English</td> <td align="center" sdval="462" sdnum="2052;"><font face="Liberation Sans">462</font></td> <td align="center" sdval="229" sdnum="2052;"><font face="Liberation Sans">229</font></td> <td align="center" sdval="233" sdnum="2052;"><font face="Liberation Sans">233</font></td> <td align="center" sdval="1944" sdnum="2052;"><font face="Liberation Sans">1944</font></td> <td align="center" sdval="849" sdnum="2052;"><font face="Liberation Sans">849</font></td> <td align="center" sdval="1095" sdnum="2052;"><font face="Liberation Sans">1095</font></td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center">✓</td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center">✓</td> </tr> <tr> <td height="20" align="center"><b>SVT</b></td> <td align="center">English</td> <td align="center" sdval="350" sdnum="2052;"><font face="Liberation Sans">350</font></td> <td align="center" sdval="100" sdnum="2052;"><font face="Liberation Sans">100</font></td> <td align="center" sdval="250" sdnum="2052;"><font face="Liberation Sans">250</font></td> <td align="center" sdval="725" sdnum="2052;"><font face="Liberation Sans">725</font></td> <td align="center" sdval="211" sdnum="2052;"><font face="Liberation Sans">211</font></td> <td align="center" sdval="514" sdnum="2052;"><font face="Liberation Sans">514</font></td> <td align="center">✓</td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center">✓</td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> </tr> <tr> <td height="20" align="center"><b>SVT-P</b></td> <td align="center">English</td> <td align="center" sdval="238" sdnum="2052;"><font face="Liberation Sans">238</font></td> <td align="center">~</td> <td align="center">~</td> <td align="center" sdval="639" sdnum="2052;"><font face="Liberation Sans">639</font></td> <td align="center">~</td> <td align="center">~</td> <td align="center">✓</td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> </tr> <tr> <td height="20" align="center"><b>IC15</b></td> <td align="center">English</td> <td align="center" sdval="1500" sdnum="2052;"><font face="Liberation Sans">1500</font></td> <td align="center" sdval="1000" sdnum="2052;"><font face="Liberation Sans">1000</font></td> <td align="center" sdval="500" sdnum="2052;"><font face="Liberation Sans">500</font></td> <td align="center" sdval="17548" sdnum="2052;"><font face="Liberation Sans">17548</font></td> <td align="center" sdval="122318" sdnum="2052;"><font face="Liberation Sans">122318</font></td> <td align="center" sdval="5230" sdnum="2052;"><font face="Liberation Sans">5230</font></td> <td align="center">✓</td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center">✓</td> </tr> <tr> <td height="20" align="center"><b>Total-Text</b></td> <td align="center"><font face="Liberation Sans">English</font></td> <td align="center" sdval="1525" sdnum="2052;"><font face="Liberation Sans">1525</font></td> <td align="center" sdval="1225" sdnum="2052;"><font face="Liberation Sans">1225</font></td> <td align="center" sdval="300" sdnum="2052;"><font face="Liberation Sans">300</font></td> <td align="center" sdval="9330" sdnum="2052;"><font face="Liberation Sans">9330</font></td> <td align="center">~</td> <td align="center">~</td> <td align="center">✓</td> <td align="center">✓</td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center">✓</td> <td align="center">✓</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center" sdnum="2052;0;@">✕</td> <td align="center">✓</td> </tr> </table>

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2. Summary of End-to-end Scene Text Detection and Recognition Methods

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2.1 Comparison of methods

<table cellspacing="0" border="0"> <colgroup width="152"></colgroup> <colgroup width="131"></colgroup> <colgroup width="85"></colgroup> <colgroup width="252"></colgroup> <colgroup width="250"></colgroup> <colgroup span="2" width="85"></colgroup> <colgroup width="646"></colgroup> <tr> <td height="20" align="left"><b><font face="Arial">Method&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font></b></td> <td align="left"><b><font face="Arial">Model&nbsp;&nbsp;&nbsp;&nbsp;</font></b></td> <td align="left"><b><font face="Arial">Code</font></b></td> <td align="left"><b><font face="Arial">Detection&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font></b></td> <td align="left"><b><font face="Arial">Recognition&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font></b></td> <td align="left"><b><font face="Arial">Source </font></b></td> <td align="left"><b><font face="Arial">Time</font></b></td> <td align="left"><b><font face="Arial">Highlight&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font></b></td> </tr> <tr> <td height="20" align="left" valign=middle><font face="Times New Roman">Wang et al. [1]</font></td> <td align="left" valign=middle><br></td> <td align="left" sdnum="2052;0;@">✕</td> <td align="left" valign=middle><font face="Times New Roman">Sliding windows and Random Ferns</font></td> <td align="left" valign=middle><font face="Times New Roman">Pictorial Structures</font></td> <td align="left" valign=middle><font face="Times New Roman">ICCV</font></td> <td align="left" valign=middle sdval="2011" sdnum="2052;"><font face="Times New Roman">2011</font></td> <td align="left" valign=middle><font face="Times New Roman">Word Re-scoring for NMS</font></td> </tr> <tr> <td height="20" align="left" valign=middle><font face="Times New Roman">Wang et al. [2]</font></td> <td align="left" valign=middle><br></td> <td align="left" sdnum="2052;0;@">✕</td> <td align="left" valign=middle><font face="Times New Roman">CNN-based</font></td> <td align="left" valign=middle><font face="Times New Roman">Sliding windows for classification</font></td> <td align="left" valign=middle><font face="Times New Roman">ICPR</font></td> <td align="left" valign=middle sdval="2012" sdnum="2052;"><font face="Times New Roman">2012</font></td> <td align="left" valign=middle><font face="Times New Roman">CNN architecture</font></td> </tr> <tr> <td height="20" align="left" valign=middle><font face="Times New Roman">Jaderberg et al. [3]</font></td> <td align="left" valign=middle><br></td> <td align="left" sdnum="2052;0;@">✕</td> <td align="left" valign=middle><font face="Times New Roman">CNN-based and saliency maps</font></td> <td align="left" valign=middle><font face="Times New Roman">CNN classifier</font></td> <td align="left" valign=middle><font face="Times New Roman">ECCV</font></td> <td align="left" valign=middle sdval="2014" sdnum="2052;"><font face="Times New Roman">2014</font></td> <td align="left" valign=middle><font face="Times New Roman">Data mining and annotation</font></td> </tr> <tr> <td height="20" align="left" valign=middle><font face="Times New Roman">Alsharif et al. [4]</font></td> <td align="left" valign=middle><br></td> <td align="left" sdnum="2052;0;@">✕</td> <td align="left" valign=middle><font face="Times New Roman">CNN and hybrid HMM maxout models</font></td> <td align="left" valign=middle><font face="Times New Roman">Segmentation-based</font></td> <td align="left" valign=middle><font face="Times New Roman">ICLR</font></td> <td align="left" valign=middle sdval="2014" sdnum="2052;"><font face="Times New Roman">2014</font></td> <td align="left" valign=middle><font face="Times New Roman">Hybrid HMM maxout models</font></td> </tr> <tr> <td height="20" align="left" valign=middle><font face="Times New Roman">Yao et al. [5]</font></td> <td align="left" valign=middle><br></td> <td align="left" sdnum="2052;0;@">✕</td> <td align="left" valign=middle><font face="Times New Roman">Random Forest</font></td> <td align="left" valign=middle><font face="Times New Roman">Component Linking and Word Partition</font></td> <td align="left" valign=middle><font face="Times New Roman">TIP</font></td> <td align="left" valign=middle sdval="2014" sdnum="2052;"><font face="Times New Roman">2014</font></td> <td align="left" valign=middle><font face="Times New Roman">(1) Detection and recognition features sharing. (2) Oriented-text. (3) A new dictionary search method</font></td> </tr> <tr> <td height="20" align="left" valign=middle><font face="Times New Roman">Neumann et al. [6]</font></td> <td align="left" valign=middle><br></td> <td align="left" sdnum="2052;0;@">✕</td> <td align="left" valign=middle><font face="Times New Roman">Extremal Regions</font></td> <td align="left" valign=middle><font face="Times New Roman">Clustering algorithm to group characters</font></td> <td align="left" valign=middle><font face="Times New Roman">TPAMI</font></td> <td align="left" valign=middle sdval="2015" sdnum="2052;"><font face="Times New Roman">2015</font></td> <td align="left" valign=middle><font face="Times New Roman">Real-time performance(1.6s/image)</font></td> </tr> <tr> <td height="20" align="left" valign=middle><font face="Times New Roman">Jaderberg et al. [7]</font></td> <td align="left" valign=middle><br></td> <td align="left" sdnum="2052;0;@">✕</td> <td align="left" valign=middle><font face="Times New Roman">Region proposal mechanism</font></td> <td align="left" valign=middle><font face="Times New Roman">Word-level classification</font></td> <td align="left" valign=middle><font face="Times New Roman">IJCV</font></td> <td align="left" valign=middle sdval="2016" sdnum="2052;"><font face="Times New Roman">2016</font></td> <td align="left" valign=middle><font face="Times New Roman">Trained only on data produced by a synthetic text generation engine, requiring no human labelled data</font></td> </tr> <tr> <td height="20" align="left" valign=middle><font face="Times New Roman">Liao et al. [8]</font></td> <td align="left" valign=middle><font face="Times New Roman">TextBoxes</font></td> <td align="left" sdnum="2052;0;@">✓</td> <td align="left" valign=middle><font face="Times New Roman">SSD-based framework</font></td> <td align="left" valign=middle><font face="Times New Roman">CRNN</font></td> <td align="left" valign=middle><font face="Times New Roman">AAAI</font></td> <td align="left" valign=middle sdval="2017" sdnum="2052;"><font face="Times New Roman">2017</font></td> <td align="left" valign=middle><font face="Times New Roman">An end-to-end trainable fast scene text detector</font></td> </tr> <tr> <td height="20" align="left" valign=middle><font face="Times New Roman">Bŭsta et al. [9]</font></td> <td align="left" valign=middle><font face="Times New Roman">Deep TextSpotter</font></td> <td align="left" sdnum="2052;0;@">✕</td> <td align="left" valign=middle><font face="Times New Roman">Yolo v2</font></td> <td align="left" valign=middle><font face="Times New Roman">CTC</font></td> <td align="left" valign=middle><font face="Times New Roman">ICCV</font></td> <td align="left" valign=middle sdval="2017" sdnum="2052;"><font face="Times New Roman">2017</font></td> <td align="left" valign=middle><font face="Times New Roman">Yolov2 + RPN, RNN + CTC. It is the first end-to-end trainable detection and recognition system with high speed.</font></td> </tr> <tr> <td height="20" align="left" valign=middle><font face="Times New Roman">Li et al. [10]</font></td> <td align="left" valign=middle><br></td> <td align="left" sdnum="2052;0;@">✕</td> <td align="left" valign=middle><font face="Times New Roman">Text Proposal Network</font></td> <td align="left" valign=middle><font face="Times New Roman">Attention</font></td> <td align="left" valign=middle><font face="Times New Roman">ICCV</font></td> <td align="left" valign=middle sdval="2017" sdnum="2052;"><font face="Times New Roman">2017</font></td> <td align="left" valign=middle><font face="Times New Roman">TPN + RNN encoder + attention-based RNN</font></td> </tr> <tr> <td height="20" align="left" valign=middle><font face="Times New Roman">Sun et al. [22]</font></td> <td align="left" valign=middle><font face="Times New Roman">TextNet </font></td> <td align="left" sdnum="2052;0;@">✕</td> <td align="left" valign=middle><font face="Times New Roman">Scale-aware attention backbone and Perspective RoI Transform </font></td> <td align="left" valign=middle><font face="Times New Roman">Attention</font></td> <td align="left" valign=middle><font face="Times New Roman">ACCV</font></td> <td align="left" valign=middle sdval="2018" sdnum="2052;"><font face="Times New Roman">2018</font></td> <td align="left" valign=middle><font face="Times New Roman">Perspective RoI Transform for Irregular text recognition</font></td> </tr> <tr> <td height="20" align="left" valign=middle><font face="Times New Roman">Lyu et al. [11]</font></td> <td align="left" valign=middle><font face="Times New Roman">Mask TextSpotter</font></td> <td align="left" sdnum="2052;0;@">✓</td> <td align="left" valign=middle><font face="Times New Roman">Fast R-CNN with mask branch</font></td> <td align="left" valign=middle><font face="Times New Roman">Character segmentation</font></td> <td align="left" valign=middle><font face="Times New Roman">ECCV</font></td> <td align="left" valign=middle sdval="2018" sdnum="2052;"><font face="Times New Roman">2018</font></td> <td align="left" valign=middle><font face="Times New Roman">Precise text detection and recognition are acquired via semantic segmentation</font></td> </tr> <tr> <td height="20" align="left" valign=middle><font face="Times New Roman">He et al. [12]</font></td> <td align="left" valign=middle><br></td> <td align="left" sdnum="2052;0;@">✓</td> <td align="left" valign=middle><font face="Times New Roman">Text-Alignment Layer</font></td> <td align="left" valign=middle><font face="Times New Roman">Attention</font></td> <td align="left" valign=middle><font face="Times New Roman">CVPR</font></td> <td align="left" valign=middle sdval="2018" sdnum="2052;"><font face="Times New Roman">2018</font></td> <td align="left" valign=middle><font face="Times New Roman">Character attention mechanism: use character spatial information as explicit supervision</font></td> </tr> <tr> <td height="20" align="left" valign=middle><font face="Times New Roman">Liu et al. [13]</font></td> <td align="left" valign=middle><font face="Times New Roman">FOTS</font></td> <td align="left" sdnum="2052;0;@">✓</td> <td align="left" valign=middle><font face="Times New Roman">EAST with RoIRotate</font></td> <td align="left" valign=middle><font face="Times New Roman">CTC</font></td> <td align="left" valign=middle><font face="Times New Roman">CVPR</font></td> <td align="left" valign=middle sdval="2018" sdnum="2052;"><font face="Times New Roman">2018</font></td> <td align="left" valign=middle><font face="Times New Roman">Little computation overhead compared to baseline text detection network (22.6fps)</font></td> </tr> <tr> <td height="20" align="left" valign=middle><font face="Times New Roman">Liao et al. [14]</font></td> <td align="left" valign=middle><font face="Times New Roman">TextBoxes++</font></td> <td align="left" sdnum="2052;0;@">✓</td> <td align="left" valign=middle><font face="Times New Roman">SSD-based framework</font></td> <td align="left" valign=middle><font face="Times New Roman">CRNN</font></td> <td align="left" valign=middle><font face="Times New Roman">TIP</font></td> <td align="left" valign=middle sdval="2018" sdnum="2052;"><font face="Times New Roman">2018</font></td> <td align="left" valign=middle><font face="Times New Roman">Journal version of TextBoxes (multi-oriented scene text support)</font></td> </tr> <tr> <td height="20" align="left"><font face="Times New Roman">Liao et al. [15]</font></td> <td align="left"><font face="Times New Roman">Mask TextSpotter</font></td> <td align="left" sdnum="2052;0;@">✓</td> <td align="left"><font face="Times New Roman">Mask R-CNN</font></td> <td align="left"><font face="Times New Roman">Character segmentation + Spatial Attention Module</font></td> <td align="left"><font face="Times New Roman">TPAMI</font></td> <td align="left" sdval="2019" sdnum="2052;"><font face="Times New Roman">2019</font></td> <td align="left"><font face="Times New Roman">Journal version of Mask TextSpotter(proposes Spatial Attention Module)</font></td> </tr> <tr> <td height="20" align="left" valign=middle><font face="Times New Roman">Xing et al. [23]</font></td> <td align="left"><font face="Times New Roman">CharNet</font></td> <td align="left" sdnum="2052;0;@">✓</td> <td align="left"><font face="Times New Roman">A character branch and a detection branch </font></td> <td align="left"><font face="Times New Roman">Character level</font></td> <td align="left"><font face="Times New Roman">ICCV</font></td> <td align="left" sdval="2019" sdnum="2052;"><font face="Times New Roman">2019</font></td> <td align="left"><font face="Times New Roman">Utilizing a character as basic element to overcome the main difficulty of joint optimization of text detection and RNN-based recognition</font></td> </tr> <tr> <td height="20" align="left"><font face="Times New Roman">Feng et al. [24]</font></td> <td align="left"><font face="Times New Roman">TextDragon </font></td> <td align="left" sdnum="2052;0;@">✕</td> <td align="left"><font face="Times New Roman">Local box regression, center line segmentation and RoI Sliding</font></td> <td align="left" valign=middle><font face="Times New Roman">CTC</font></td> <td align="left"><font face="Times New Roman">ICCV</font></td> <td align="left" sdval="2019" sdnum="2052;"><font face="Times New Roman">2019</font></td> <td align="left"><font face="Times New Roman">A new differentiable operator named RoISlide connect arbitrary shaped text detection and recognition</font></td> </tr> <tr> <td height="20" align="left"><font face="Times New Roman">Qin et al. [25]</font></td> <td align="left"><br></td> <td align="left" sdnum="2052;0;@">✕</td> <td align="left"><font face="Times New Roman">Mask R-CNN with RoI masking</font></td> <td align="left" valign=middle><font face="Times New Roman">Attention</font></td> <td align="left"><font face="Times New Roman">ICCV</font></td> <td align="left" sdval="2019" sdnum="2052;"><font face="Times New Roman">2019</font></td> <td align="left"><font face="Times New Roman">A simple yet effective RoI masking step to extract useful irregularly shaped text instance features</font></td> </tr> <tr> <td height="20" align="left"><font face="Times New Roman">Qiao et al. [26]</font></td> <td align="left"><font face="Times New Roman">Text Perceptron </font></td> <td align="left" sdnum="2052;0;@">✕</td> <td align="left"><font face="Times New Roman">Mask R-CNN with Order-aware Semantic Segmentation and Boundary Regressions</font></td> <td align="left" valign=middle><font face="Times New Roman">Attention</font></td> <td align="left"><font face="Times New Roman">AAAI</font></td> <td align="left" sdval="2020" sdnum="2052;"><font face="Times New Roman">2020</font></td> <td align="left"><font face="Times New Roman">A novel Shape Transform Module to transform the feature regions into regular morphologies</font></td> </tr> <tr> <td height="20" align="left"><font face="Times New Roman">Wang et al. [27]</font></td> <td align="left"><br></td> <td align="left" sdnum="2052;0;@">✕</td> <td align="left"><font face="Times New Roman">Oriented Rectangular Box Detector and Boundary Point Detector</font></td> <td align="left" valign=middle><font face="Times New Roman">Attention</font></td> <td align="left"><font face="Times New Roman">AAAI</font></td> <td align="left" sdval="2020" sdnum="2052;"><font face="Times New Roman">2020</font></td> <td align="left"><font face="Times New Roman">A set of points on the boundary of each text instance represents arbitrary shapes</font></td> </tr> <tr> <td height="20" align="left"><font face="Times New Roman">Liu et al. [28]</font></td> <td align="left"><font face="Times New Roman">ABCNet</font></td> <td align="left" sdnum="2052;0;@">✓</td> <td align="left"><font face="Times New Roman">Bezier Curve Detection and BezierAlign</font></td> <td align="left"><font face="Times New Roman">CTC</font></td> <td align="left"><font face="Times New Roman">CVPR</font></td> <td align="left" sdval="2020" sdnum="2052;"><font face="Times New Roman">2020</font></td> <td align="left"><font face="Times New Roman">10 times faster than re-cent state-of-the-art methods with a competitive scene text spotting accuracy</font></td> </tr> </table>

<a id="22-end2end-result"></a>

2.2 End-to-end scene text detection and recognition results

<table cellspacing="0" border="0"> <colgroup width="193"></colgroup> <colgroup width="169"></colgroup> <colgroup span="22" width="85"></colgroup> <tr> <td rowspan=3 height="59" align="center" valign=middle><b><font face="Arial">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Method&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font></b></td> <td rowspan=3 align="center" valign=middle><b><font face="Arial">Model</font></b></td> <td rowspan=3 align="center" valign=middle><b><font face="Arial">Source </font></b></td> <td rowspan=3 align="center" valign=middle><b><font face="Arial">Time</font></b></td> <td rowspan=3 align="center" valign=middle><b><font face="Arial">SVT</font></b></td> <td rowspan=3 align="center" valign=middle><b><font face="Arial">SVT-50</font></b></td> <td colspan=3 rowspan=2 align="center" valign=middle><b><font face="Arial">IC03</font></b></td> <td rowspan=3 align="center" valign=middle><b><font face="Arial">IC11</font></b></td> <td colspan=6 align="center" valign=middle><b><font face="Arial">IC13</font></b></td> <td colspan=6 align="center" valign=middle><b><font face="Arial">IC15</font></b></td> <td colspan=2 align="center" valign=middle><b><font face="Arial">Total-text</font></b></td> </tr> <tr> <td colspan=3 align="center" valign=middle><font face="Times New Roman">End-to-end</font></td> <td colspan=3 align="center" valign=middle><font face="Times New Roman">Spotting</font></td> <td colspan=3 align="center" valign=middle><font face="Times New Roman">End-to-end</font></td> <td colspan=3 align="center" valign=middle><font face="Times New Roman">Spotting</font></td> <td rowspan=2 align="center" valign=middle><font face="Times New Roman">None</font></td> <td rowspan=2 align="center" valign=middle><font face="Times New Roman">Full</font></td> <td rowspan=2 align="center" valign=middle><font face="Times New Roman">None</font></td> <td rowspan=2 align="center" valign=middle><font face="Times New Roman">Full</font></td> </tr> <tr> <td align="center" valign=middle sdval="50" sdnum="2052;"><font face="Times New Roman">50</font></td> <td align="center" valign=middle><font face="Times New Roman">Full</font></td> <td align="center" valign=middle><font face="Times New Roman">None</font></td> <td align="center" valign=middle><font face="Times New Roman">S</font></td> <td align="center" valign=middle><font face="Times New Roman">W </font></td> <td align="center" valign=middle><font face="Times New Roman">G</font></td> <td align="center" valign=middle><font face="Times New Roman">S</font></td> <td align="center" valign=middle><font face="Times New Roman">W </font></td> <td align="center" valign=middle><font face="Times New Roman">G</font></td> <td align="center" valign=middle><font face="Times New Roman">S</font></td> <td align="center" valign=middle><font face="Times New Roman">W </font></td> <td align="center" valign=middle><font face="Times New Roman">G</font></td> <td align="center" valign=middle><font face="Times New Roman">S</font></td> <td align="center" valign=middle><font face="Times New Roman">W </font></td> <td align="center" valign=middle><font face="Times New Roman">G</font></td> </tr> <tr> <td height="20" align="center" valign=middle><font face="Times New Roman">Wang et al. [1]</font></td> <td align="center" valign=middle><br></td> <td align="center" valign=middle><font face="Times New Roman">ICCV</font></td> <td align="center" valign=middle sdval="2011" sdnum="2052;"><font face="Times New Roman">2011</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" valign=middle sdval="51" sdnum="2052;"><font face="Times New Roman">51</font></td> <td align="center" valign=middle><br></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center" valign=middle><font face="Times New Roman">Wang et al. [2]</font></td> <td align="center" valign=middle><br></td> <td align="center" valign=middle><font face="Times New Roman">ICPR</font></td> <td align="center" valign=middle sdval="2012" sdnum="2052;"><font face="Times New Roman">2012</font></td> <td align="center" valign=middle sdval="46" sdnum="2052;"><font face="Times New Roman">46</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" valign=middle sdval="72" sdnum="2052;"><font face="Times New Roman">72</font></td> <td align="center" valign=middle sdval="67" sdnum="2052;"><font face="Times New Roman">67</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center" valign=middle><font face="Times New Roman">Jaderberg et al. [3]</font></td> <td align="center" valign=middle><br></td> <td align="center" valign=middle><font face="Times New Roman">ECCV</font></td> <td align="center" valign=middle sdval="2014" sdnum="2052;"><font face="Times New Roman">2014</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" valign=middle sdval="56" sdnum="2052;"><font face="Times New Roman">56</font></td> <td align="center" valign=middle sdval="80" sdnum="2052;"><font face="Times New Roman">80</font></td> <td align="center" valign=middle sdval="75" sdnum="2052;"><font face="Times New Roman">75</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center" valign=middle><font face="Times New Roman">Alsharif et al. [4]</font></td> <td align="center" valign=middle><br></td> <td align="center" valign=middle><font face="Times New Roman">ICLR</font></td> <td align="center" valign=middle sdval="2014" sdnum="2052;"><font face="Times New Roman">2014</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" valign=middle sdval="48" sdnum="2052;"><font face="Times New Roman">48</font></td> <td align="center" valign=middle sdval="77" sdnum="2052;"><font face="Times New Roman">77</font></td> <td align="center" valign=middle sdval="70" sdnum="2052;"><font face="Times New Roman">70</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center" valign=middle><font face="Times New Roman">Yao et al. [5]</font></td> <td align="center" valign=middle><br></td> <td align="center" valign=middle><font face="Times New Roman">TIP</font></td> <td align="center" valign=middle sdval="2014" sdnum="2052;"><font face="Times New Roman">2014</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" valign=middle><br></td> <td align="center" valign=middle sdval="48.6" sdnum="2052;"><font face="Times New Roman">48.6</font></td> <td align="center" valign=middle><br></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center" valign=middle><font face="Times New Roman">Neumann et al. [6]</font></td> <td align="center" valign=middle><br></td> <td align="center" valign=middle><font face="Times New Roman">TPAMI</font></td> <td align="center" valign=middle sdval="2015" sdnum="2052;"><font face="Times New Roman">2015</font></td> <td align="center" valign=middle><br></td> <td align="center" valign=middle sdval="68.1" sdnum="2052;"><font face="Times New Roman">68.1</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" valign=middle sdval="45.2" sdnum="2052;"><font face="Times New Roman">45.2</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" valign=middle sdval="35" sdnum="2052;"><font face="Times New Roman">35</font></td> <td align="center" valign=middle sdval="19.9" sdnum="2052;"><font face="Times New Roman">19.9</font></td> <td align="center" valign=middle sdval="15.6" sdnum="2052;"><font face="Times New Roman">15.6</font></td> <td align="center" valign=middle sdval="35" sdnum="2052;"><font face="Times New Roman">35</font></td> <td align="center" valign=middle sdval="19.9" sdnum="2052;"><font face="Times New Roman">19.9</font></td> <td align="center" valign=middle sdval="15.6" sdnum="2052;"><font face="Times New Roman">15.6</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center" valign=middle><font face="Times New Roman">Jaderberg et al. [7]</font></td> <td align="center" valign=middle><br></td> <td align="center" valign=middle><font face="Times New Roman">IJCV</font></td> <td align="center" valign=middle sdval="2016" sdnum="2052;"><font face="Times New Roman">2016</font></td> <td align="center" valign=middle sdval="53" sdnum="2052;"><font face="Times New Roman">53</font></td> <td align="center" valign=middle sdval="76" sdnum="2052;"><font face="Times New Roman">76</font></td> <td align="center" valign=middle sdval="90" sdnum="2052;"><font face="Times New Roman">90</font></td> <td align="center" valign=middle sdval="86" sdnum="2052;"><font face="Times New Roman">86</font></td> <td align="center" valign=middle sdval="78" sdnum="2052;"><font face="Times New Roman">78</font></td> <td align="center" valign=middle sdval="76" sdnum="2052;"><font face="Times New Roman">76</font></td> <td align="center" valign=middle sdval="76" sdnum="2052;"><font face="Times New Roman">76</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center" valign=middle><font face="Times New Roman">Liao et al. [8]</font></td> <td align="center" valign=middle><font face="Times New Roman">TextBoxes</font></td> <td align="center" valign=middle><font face="Times New Roman">AAAI</font></td> <td align="center" valign=middle sdval="2017" sdnum="2052;"><font face="Times New Roman">2017</font></td> <td align="center" valign=middle sdval="64" sdnum="2052;"><font face="Times New Roman">64</font></td> <td align="center" valign=middle sdval="84" sdnum="2052;"><font face="Times New Roman">84</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" valign=middle sdval="87" sdnum="2052;"><font face="Times New Roman">87</font></td> <td align="center" valign=middle sdval="91" sdnum="2052;"><font face="Times New Roman">91</font></td> <td align="center" valign=middle sdval="89" sdnum="2052;"><font face="Times New Roman">89</font></td> <td align="center" valign=middle sdval="84" sdnum="2052;"><font face="Times New Roman">84</font></td> <td align="center" valign=middle sdval="94" sdnum="2052;"><font face="Times New Roman">94</font></td> <td align="center" valign=middle sdval="92" sdnum="2052;"><font face="Times New Roman">92</font></td> <td align="center" valign=middle sdval="87" sdnum="2052;"><font face="Times New Roman">87</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" valign=middle sdval="36.3" sdnum="2052;"><font face="Times New Roman">36.3</font></td> <td align="center" valign=middle sdval="48.9" sdnum="2052;"><font face="Times New Roman">48.9</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center" valign=middle><font face="Times New Roman">Bŭsta et al. [9]</font></td> <td align="center" valign=middle><font face="Times New Roman">Deep TextSpotter</font></td> <td align="center" valign=middle><font face="Times New Roman">ICCV</font></td> <td align="center" valign=middle sdval="2017" sdnum="2052;"><font face="Times New Roman">2017</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" valign=middle sdval="89" sdnum="2052;"><font face="Times New Roman">89</font></td> <td align="center" valign=middle sdval="86" sdnum="2052;"><font face="Times New Roman">86</font></td> <td align="center" valign=middle sdval="77" sdnum="2052;"><font face="Times New Roman">77</font></td> <td align="center" valign=middle sdval="92" sdnum="2052;"><font face="Times New Roman">92</font></td> <td align="center" valign=middle sdval="89" sdnum="2052;"><font face="Times New Roman">89</font></td> <td align="center" valign=middle sdval="81" sdnum="2052;"><font face="Times New Roman">81</font></td> <td align="center" valign=middle sdval="54" sdnum="2052;"><font face="Times New Roman">54</font></td> <td align="center" valign=middle sdval="51" sdnum="2052;"><font face="Times New Roman">51</font></td> <td align="center" valign=middle sdval="47" sdnum="2052;"><font face="Times New Roman">47</font></td> <td align="center" valign=middle sdval="58" sdnum="2052;"><font face="Times New Roman">58</font></td> <td align="center" valign=middle sdval="53" sdnum="2052;"><font face="Times New Roman">53</font></td> <td align="center" valign=middle sdval="51" sdnum="2052;"><font face="Times New Roman">51</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">21.85</font></td> </tr> <tr> <td height="20" align="center" valign=middle><font face="Times New Roman">Li et al. [10]</font></td> <td align="center" valign=middle><br></td> <td align="center" valign=middle><font face="Times New Roman">ICCV</font></td> <td align="center" valign=middle sdval="2017" sdnum="2052;"><font face="Times New Roman">2017</font></td> <td align="center" valign=middle sdval="66.18" sdnum="2052;"><font face="Times New Roman">66.18</font></td> <td align="center" valign=middle sdval="84.91" sdnum="2052;"><font face="Times New Roman">84.91</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" valign=middle sdval="87.7" sdnum="2052;"><font face="Times New Roman">87.7</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" valign=middle sdval="91.08" sdnum="2052;"><font face="Times New Roman">91.08</font></td> <td align="center" valign=middle sdval="89.8" sdnum="2052;"><font face="Times New Roman">89.8</font></td> <td align="center" valign=middle sdval="84.6" sdnum="2052;"><font face="Times New Roman">84.6</font></td> <td align="center" valign=middle sdval="94.2" sdnum="2052;"><font face="Times New Roman">94.2</font></td> <td align="center" valign=middle sdval="92.4" sdnum="2052;"><font face="Times New Roman">92.4</font></td> <td align="center" valign=middle sdval="88.2" sdnum="2052;"><font face="Times New Roman">88.2</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center" valign=middle><font face="Times New Roman">Sun et al. [22]</font></td> <td align="center" valign=middle><font face="Times New Roman">TextNet </font></td> <td align="center" valign=middle><font face="Times New Roman">ACCV</font></td> <td align="center" valign=middle sdval="2018" sdnum="2052;"><font face="Times New Roman">2018</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">89.77</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">88.80</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">82.96</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">94.59</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">93.48</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">86.99</font></td> <td align="center" valign=middle sdval="78.66" sdnum="2052;"><font face="Times New Roman">78.66</font></td> <td align="center" valign=middle sdval="74.9" sdnum="2052;"><font face="Times New Roman">74.9</font></td> <td align="center" valign=middle sdval="60.45" sdnum="2052;"><font face="Times New Roman">60.45</font></td> <td align="center" valign=middle sdval="82.38" sdnum="2052;"><font face="Times New Roman">82.38</font></td> <td align="center" valign=middle sdval="78.43" sdnum="2052;"><font face="Times New Roman">78.43</font></td> <td align="center" valign=middle sdval="62.36" sdnum="2052;"><font face="Times New Roman">62.36</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">54.02</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center" valign=middle><font face="Times New Roman">Lyu et al. [11]</font></td> <td align="center" valign=middle><font face="Times New Roman">Mask TextSpotter</font></td> <td align="center" valign=middle><font face="Times New Roman">ECCV</font></td> <td align="center" valign=middle sdval="2018" sdnum="2052;"><font face="Times New Roman">2018</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" valign=middle sdval="92.2" sdnum="2052;"><font face="Times New Roman">92.2</font></td> <td align="center" valign=middle sdval="91.1" sdnum="2052;"><font face="Times New Roman">91.1</font></td> <td align="center" valign=middle sdval="86.5" sdnum="2052;"><font face="Times New Roman">86.5</font></td> <td align="center" valign=middle sdval="92.5" sdnum="2052;"><font face="Times New Roman">92.5</font></td> <td align="center" valign=middle sdval="92" sdnum="2052;"><font face="Times New Roman">92</font></td> <td align="center" valign=middle sdval="88.2" sdnum="2052;"><font face="Times New Roman">88.2</font></td> <td align="center" valign=middle sdval="79.3" sdnum="2052;"><font face="Times New Roman">79.3</font></td> <td align="center" valign=middle sdval="73" sdnum="2052;"><font face="Times New Roman">73</font></td> <td align="center" valign=middle sdval="62.4" sdnum="2052;"><font face="Times New Roman">62.4</font></td> <td align="center" valign=middle sdval="79.3" sdnum="2052;"><font face="Times New Roman">79.3</font></td> <td align="center" valign=middle sdval="74.5" sdnum="2052;"><font face="Times New Roman">74.5</font></td> <td align="center" valign=middle sdval="64.2" sdnum="2052;"><font face="Times New Roman">64.2</font></td> <td align="center" valign=middle sdval="52.9" sdnum="2052;"><font face="Times New Roman">52.9</font></td> <td align="center" valign=middle sdval="71.8" sdnum="2052;"><font face="Times New Roman">71.8</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center" valign=middle><font face="Times New Roman">He et al. [12]</font></td> <td align="center" valign=middle><br></td> <td align="center" valign=middle><font face="Times New Roman">CVPR</font></td> <td align="center" valign=middle sdval="2018" sdnum="2052;"><font face="Times New Roman">2018</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" valign=middle sdval="91" sdnum="2052;"><font face="Times New Roman">91</font></td> <td align="center" valign=middle sdval="89" sdnum="2052;"><font face="Times New Roman">89</font></td> <td align="center" valign=middle sdval="86" sdnum="2052;"><font face="Times New Roman">86</font></td> <td align="center" valign=middle sdval="93" sdnum="2052;"><font face="Times New Roman">93</font></td> <td align="center" valign=middle sdval="92" sdnum="2052;"><font face="Times New Roman">92</font></td> <td align="center" valign=middle sdval="87" sdnum="2052;"><font face="Times New Roman">87</font></td> <td align="center" valign=middle sdval="82" sdnum="2052;"><font face="Times New Roman">82</font></td> <td align="center" valign=middle sdval="77" sdnum="2052;"><font face="Times New Roman">77</font></td> <td align="center" valign=middle sdval="63" sdnum="2052;"><font face="Times New Roman">63</font></td> <td align="center" valign=middle sdval="85" sdnum="2052;"><font face="Times New Roman">85</font></td> <td align="center" valign=middle sdval="80" sdnum="2052;"><font face="Times New Roman">80</font></td> <td align="center" valign=middle sdval="65" sdnum="2052;"><font face="Times New Roman">65</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center" valign=middle><font face="Times New Roman">Liu et al. [13]</font></td> <td align="center" valign=middle><font face="Times New Roman">FOTS</font></td> <td align="center" valign=middle><font face="Times New Roman">CVPR</font></td> <td align="center" valign=middle sdval="2018" sdnum="2052;"><font face="Times New Roman">2018</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" valign=middle sdval="91.99" sdnum="2052;"><font face="Times New Roman">91.99</font></td> <td align="center" valign=middle sdval="90.11" sdnum="2052;"><font face="Times New Roman">90.11</font></td> <td align="center" valign=middle sdval="84.77" sdnum="2052;"><font face="Times New Roman">84.77</font></td> <td align="center" valign=middle sdval="95.94" sdnum="2052;"><font face="Times New Roman">95.94</font></td> <td align="center" valign=middle sdval="93.9" sdnum="2052;"><font face="Times New Roman">93.9</font></td> <td align="center" valign=middle sdval="87.76" sdnum="2052;"><font face="Times New Roman">87.76</font></td> <td align="center" valign=middle sdval="83.55" sdnum="2052;"><font face="Times New Roman">83.55</font></td> <td align="center" valign=middle sdval="79.11" sdnum="2052;"><font face="Times New Roman">79.11</font></td> <td align="center" valign=middle sdval="65.33" sdnum="2052;"><font face="Times New Roman">65.33</font></td> <td align="center" valign=middle sdval="87.01" sdnum="2052;"><font face="Times New Roman">87.01</font></td> <td align="center" valign=middle sdval="82.39" sdnum="2052;"><font face="Times New Roman">82.39</font></td> <td align="center" valign=middle sdval="67.97" sdnum="2052;"><font face="Times New Roman">67.97</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center" valign=middle><font face="Times New Roman">Liao et al. [14]</font></td> <td align="center" valign=middle><font face="Times New Roman">TextBoxes++</font></td> <td align="center" valign=middle><font face="Times New Roman">TIP</font></td> <td align="center" valign=middle sdval="2018" sdnum="2052;"><font face="Times New Roman">2018</font></td> <td align="center" valign=middle sdval="64" sdnum="2052;"><font face="Times New Roman">64</font></td> <td align="center" valign=middle sdval="84" sdnum="2052;"><font face="Times New Roman">84</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" valign=middle sdval="93" sdnum="2052;"><font face="Times New Roman">93</font></td> <td align="center" valign=middle sdval="92" sdnum="2052;"><font face="Times New Roman">92</font></td> <td align="center" valign=middle sdval="85" sdnum="2052;"><font face="Times New Roman">85</font></td> <td align="center" valign=middle sdval="96" sdnum="2052;"><font face="Times New Roman">96</font></td> <td align="center" valign=middle sdval="95" sdnum="2052;"><font face="Times New Roman">95</font></td> <td align="center" valign=middle sdval="87" sdnum="2052;"><font face="Times New Roman">87</font></td> <td align="center" valign=middle sdval="73.3" sdnum="2052;"><font face="Times New Roman">73.3</font></td> <td align="center" valign=middle sdval="65.9" sdnum="2052;"><font face="Times New Roman">65.9</font></td> <td align="center" valign=middle sdval="51.9" sdnum="2052;"><font face="Times New Roman">51.9</font></td> <td align="center" valign=middle sdval="76.5" sdnum="2052;"><font face="Times New Roman">76.5</font></td> <td align="center" valign=middle sdval="69" sdnum="2052;"><font face="Times New Roman">69</font></td> <td align="center" valign=middle sdval="54.4" sdnum="2052;"><font face="Times New Roman">54.4</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center"><font face="Times New Roman">Liao et al. [15]</font></td> <td align="center" valign=middle><font face="Times New Roman">Mask TextSpotter</font></td> <td align="center"><font face="Times New Roman">TPAMI</font></td> <td align="center" sdval="2019" sdnum="2052;">2019</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdval="93.3" sdnum="2052;">93.3</td> <td align="center" sdval="91.3" sdnum="2052;">91.3</td> <td align="center" sdval="88.2" sdnum="2052;">88.2</td> <td align="center" sdval="92.7" sdnum="2052;">92.7</td> <td align="center" sdval="91.7" sdnum="2052;">91.7</td> <td align="center" sdval="87.7" sdnum="2052;">87.7</td> <td align="center" sdval="83" sdnum="2052;">83</td> <td align="center" sdval="77.7" sdnum="2052;">77.7</td> <td align="center" sdval="73.5" sdnum="2052;">73.5</td> <td align="center" sdval="82.4" sdnum="2052;">82.4</td> <td align="center" sdval="78.1" sdnum="2052;">78.1</td> <td align="center" sdval="73.6" sdnum="2052;">73.6</td> <td align="center" sdval="65.3" sdnum="2052;">65.3</td> <td align="center" sdval="77.4" sdnum="2052;">77.4</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center"><font face="Times New Roman">Xing et al. [23]</font></td> <td align="center"><font face="Times New Roman">CharNet</font></td> <td align="center"><font face="Times New Roman">ICCV</font></td> <td align="center" sdval="2019" sdnum="2052;">2019</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdval="85.05" sdnum="2052;">85.05</td> <td align="center" sdval="81.25" sdnum="2052;">81.25</td> <td align="center" sdval="71.08" sdnum="2052;">71.08</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdval="69.2" sdnum="2052;">69.2</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center"><font face="Times New Roman">Feng et al. [24]</font></td> <td align="center"><font face="Times New Roman">TextDragon </font></td> <td align="center"><font face="Times New Roman">ICCV</font></td> <td align="center" sdval="2019" sdnum="2052;">2019</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdval="82.54" sdnum="2052;">82.54</td> <td align="center" sdval="78.34" sdnum="2052;">78.34</td> <td align="center" sdval="65.15" sdnum="2052;">65.15</td> <td align="center" sdval="86.22" sdnum="2052;">86.22</td> <td align="center" sdval="81.62" sdnum="2052;">81.62</td> <td align="center" sdval="68.03" sdnum="2052;">68.03</td> <td align="center" sdval="48.8" sdnum="2052;">48.8</td> <td align="center" sdval="74.8" sdnum="2052;">74.8</td> <td align="center" sdval="39.7" sdnum="2052;">39.7</td> <td align="center" sdval="72.4" sdnum="2052;">72.4</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center"><font face="Times New Roman">Qin et al. [25]</font></td> <td align="center"><br></td> <td align="center"><font face="Times New Roman">ICCV</font></td> <td align="center" sdval="2019" sdnum="2052;">2019</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdval="85.51" sdnum="2052;">85.51</td> <td align="center" sdval="81.91" sdnum="2052;">81.91</td> <td align="center" sdval="69.94" sdnum="2052;">69.94</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdval="70.7" sdnum="2052;">70.7</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center"><font face="Times New Roman">Qiao et al. [26]</font></td> <td align="center"><font face="Times New Roman">Text Perceptron </font></td> <td align="center"><font face="Times New Roman">AAAI</font></td> <td align="center" sdval="2020" sdnum="2052;">2020</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdval="91.4" sdnum="2052;">91.4</td> <td align="center" sdval="90.7" sdnum="2052;">90.7</td> <td align="center" sdval="85.8" sdnum="2052;">85.8</td> <td align="center" sdval="94.9" sdnum="2052;">94.9</td> <td align="center" sdval="94" sdnum="2052;">94</td> <td align="center" sdval="88.5" sdnum="2052;">88.5</td> <td align="center" sdval="80.5" sdnum="2052;">80.5</td> <td align="center" sdval="76.6" sdnum="2052;">76.6</td> <td align="center" sdval="65.1" sdnum="2052;">65.1</td> <td align="center" sdval="84.1" sdnum="2052;">84.1</td> <td align="center" sdval="79.4" sdnum="2052;">79.4</td> <td align="center" sdval="67.9" sdnum="2052;">67.9</td> <td align="center" sdval="69.7" sdnum="2052;">69.7</td> <td align="center" sdval="78.3" sdnum="2052;">78.3</td> <td align="center" sdval="57" sdnum="2052;">57</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> <tr> <td height="20" align="center"><font face="Times New Roman">Wang et al. [27]</font></td> <td align="center"><br></td> <td align="center"><font face="Times New Roman">AAAI</font></td> <td align="center" sdval="2020" sdnum="2052;">2020</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdval="88.2" sdnum="2052;">88.2</td> <td align="center" sdval="87.7" sdnum="2052;">87.7</td> <td align="center" sdval="84.1" sdnum="2052;">84.1</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdval="79.7" sdnum="2052;">79.7</td> <td align="center" sdval="75.2" sdnum="2052;">75.2</td> <td align="center" sdval="64.1" sdnum="2052;">64.1</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdval="65" sdnum="2052;">65</td> <td align="center" sdval="76.1" sdnum="2052;">76.1</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdval="41.3" sdnum="2052;">41.3</td> </tr> <tr> <td height="20" align="center"><font face="Times New Roman">Liu et al. [28]</font></td> <td align="center"><font face="Times New Roman">ABCNet</font></td> <td align="center"><font face="Times New Roman">CVPR</font></td> <td align="center" sdval="2020" sdnum="2052;">2020</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> <td align="center" sdval="69.5" sdnum="2052;">69.5</td> <td align="center" sdval="78.4" sdnum="2052;">78.4</td> <td align="center" sdval="45.2" sdnum="2052;">45.2</td> <td align="center" sdval="74.1" sdnum="2052;">74.1</td> <td align="center" sdnum="2052;0;@"><font face="Times New Roman">~</font></td> </tr> </table>

<a id="3-field-survey"></a>

3. Survey

[A] [TPAMI-2015] Ye Q, Doermann D. Text detection and recognition in imagery: A survey[J]. IEEE transactions on pattern analysis and machine intelligence, 2015, 37(7): 1480-1500. paper

[B] [Frontiers-Comput. Sci-2016] Zhu Y, Yao C, Bai X. Scene text detection and recognition: Recent advances and future trends[J]. Frontiers of Computer Science, 2016, 10(1): 19-36. paper

[C] [arXiv-2018] Long S, He X, Ya C. Scene Text Detection and Recognition: The Deep Learning Era[J]. arXiv preprint arXiv:1811.04256, 2018. paper

<a id="4-ocr-service"></a>

4. OCR Service

OCRAPIFree
Tesseract OCR Engine×
Azure
ABBYY
OCR Space
SODA PDF OCR
Free Online OCR
Online OCR
Super Tools
Online Chinese Recognition
Calamari OCR×
Tencent OCR×

<a id="5-references"></a>

5. References and codes

If you find any problems in our resources, or any good papers/codes we have missed, please inform us at liuchongyu1996@gmail.com. Thank you for your contribution.

Copyright

Copyright © 2019 SCUT-DLVC. All Rights Reserved.

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