Open Source OCR Library: 1.ABBYY Mobile OCR Engine is a powerful software development kit which allows developers of mobile and small footprint applications to integrate highly accurate optical character recognition (OCR) technologies that convert images and photographs into manageable and searchable text. Toolkit supports the most popular mobile platforms and devices - iOS (iPhone) and Android. http://www.abbyy.com/mobileocr/
发布评论
评论（3）
最著名的是Tesseract OCR，最初由摩托罗拉开发，后来开源。它也是由谷歌推广的。
还有一些，可能没有 Tesseract 那么出名：
http://en.wikipedia.org/wiki/OCRopus
http://jocr.sourceforge.net/
The most famous one is Tesseract OCR developed initially by Motorola and later become open source. It is also promoted by Google.
There are a few more, perhaps not as famous as Tesseract:
http://en.wikipedia.org/wiki/OCRopus
http://jocr.sourceforge.net/
开源 OCR 库：
1.ABBYY 移动 OCR 引擎是一款功能强大的软件开发套件，允许移动和小型应用程序的开发人员集成高精度光学字符识别 (OCR) 技术，将图像和照片转换为可管理和可搜索的文本。 Toolkit 支持最流行的移动平台和设备 - iOS (iPhone) 和 Android。 http://www.abbyy.com/mobileocr/
2.Tesseract可能是最准确的开源OCR 引擎可用。 https://code.google.com/p/tesseract-ocr/
Open Source OCR Library:
1.ABBYY Mobile OCR Engine is a powerful software development kit which allows developers of mobile and small footprint applications to integrate highly accurate optical character recognition (OCR) technologies that convert images and photographs into manageable and searchable text. Toolkit supports the most popular mobile platforms and devices - iOS (iPhone) and Android. http://www.abbyy.com/mobileocr/
2.Tesseract is probably the most accurate open source OCR engine available. https://code.google.com/p/tesseract-ocr/
这里是一篇关于如何从图片中提取数字。
作者收集了大量样本来训练他的神经网络算法，我相信做的是图像处理与OpenCV。
Here is an interesting article on how to extract numbers from picture.
The author collects large number of samples to train his neural networks algorithm and I believe doing the image processing with OpenCV.