A commercial quality OCR engine originally developed at HP between 1985 and 1995. In 1995, this engine was among the top 3 evaluated by UNLV. It was open-sourced by HP and UNLV in 2005. (NOTE: We re migrating to code.google.com. Please see the forums

tesseract很好用的字母提取软件,可以提取英文等很多语言。-well with tesseract letters extraction software that can extract English, and many other languages.