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Boosting RGB-D Saliency Detection by Leveraging Unlabeled RGB Images

• This repository is the official implementation of the paper.

Abstract

Training deep models for RGB-D salient object detection (SOD) often requires a large number of labeled RGB-D images. However, RGB-D data is not easily acquired, which limits the development of RGB-D SOD techniques. To alleviate this issue, we present a Dual-Semi RGB-D Salient Object Detection Network (DS-Net) to leverage unlabeled RGB images for boosting RGB-D saliency detection. We first devise a depth decoupling convolutional neural network (DDCNN), which contains a depth estimation branch and a saliency detection branch. The depth estimation branch is trained with RGB-D images and then used to estimate the pseudo depth maps for all unlabeled RGB images to form the paired data. The saliency detection branch is used to fuse the RGB feature and depth feature to predict the RGB-D saliency. Then, the whole DDCNN is assigned as the backbone in a teacher-student framework for semi-supervised learning. Moreover, we also introduce a consistency loss on the intermediate attention and saliency maps for the unlabeled data, as well as a supervised depth and saliency loss for labeled data. Experimental results on seven widely-used benchmark datasets demonstrate that our DDCNN outperforms state-of-the-art methods both quantitatively and qualitatively. We also demonstrate that our semi-supervised DS-Net can further improve the performance, even when using an RGB image with the pseudo depth map.

Our results

• comming soon in BaiduPan link or Google Drive link.

Prerequisites

pip install -r requirements.txt

Datasets

• download all the benchmark datasets of RGB-D saliency from this link.
• unzip them into the same directory.
• adapt the UNLABELED.* items of *.yaml configure file using the above directory.
• download the unlabeled RGB datasets from the DUTS image dataset and discard its saliency labels.

Configure Format

• we follow the widely-used hierarchical configuration paradigm using the YAML (a human-readable data-serialization mark language) file format.
• run the following script to create a default configure file.

cd configure/
python default.py

• adapt the specific items (or entries) according to your requirements.

Train

python source/main.py --cfg path/to/configure

Test

python source/test.py --cfg path/to/configure

Test without metrics computation

python source/predict.py --cfg path/to/configure

Acknowledge

• thanks to the co-authors for their constructive suggestions.
• codebase is inspired by the Mean Teacher Framework.

License

Copyright 2021 Author of DS-Net

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Citation

@article{wang2022boosting,
  title={Boosting RGB-D Saliency Detection by Leveraging Unlabeled RGB Images},
  author={Wang, Xiaoqiang and Zhu, Lei and Tang, Siliang and Fu, Huazhu and Li, Ping and Wu, Fei and Yang, Yi and Zhuang, Yueting},
  journal={IEEE Transactions on Image Processing},
  year={2022},
  publisher={IEEE}
}