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Awesome OCR

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This list contains links to great software tools and libraries and literature related to Optical Character Recognition (OCR).

Contributions are welcome, as is feedback.

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Software

OCR engines

Older and possibly abandoned OCR engines

OCR file formats

hOCR

ALTO XML

TEI

PAGE XML

OCR CLI

OCR GUI

OCR Preprocessing

OCR as a Service

OCR evaluation

OCR libraries by programming language

Crystal

Elixir

Go

Java

.Net

Object Pascal

PHP

Python

Javascript

Ruby

Rust

R

Swift

OCR training tools

Datasets

Ground Truth

Literature

OCR-related publication and link lists

Blog Posts and Tutorials

OCR Showcases

Academic articles

2011 and before

2012

2013

2014

2015

2016

2017

2018