你必须付出一些努力来编译，但 Tesseract 是一个很好的解决方案。
要编译它，请查看 http://iphone.olipion.com/cross-compilation/tesseract- OCR。有关示例应用程序，请参阅 http://robertcarlsen.net/tag/tesseract
You would have to make some efforts to compile but Tesseract is good solution.
For compiling it look http://iphone.olipion.com/cross-compilation/tesseract-ocr. For sample application see http://robertcarlsen.net/tag/tesseract
有许多库可用于从图像中提取文本。 您可以查看我的答案
将 OCR 限制为仅提供数字Tesseract SDK提供了黑名单和白名单字符的方法
_tesseract->SetVariable("tessedit_char_whitelist", "0123456789");
使用此方法您可以限制只识别数字。
希望有帮助。
There are many libraries available for extracting text from images. You can check my answer
For restricting OCR to provide numbers only Tesseract SDK provides method as blacklist and whitelist characters
Using this method you can restrict only numbers to be recognized.
Hope it helps.
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你必须付出一些努力来编译，但 Tesseract 是一个很好的解决方案。
要编译它，请查看 http://iphone.olipion.com/cross-compilation/tesseract- OCR。有关示例应用程序，请参阅 http://robertcarlsen.net/tag/tesseract
You would have to make some efforts to compile but Tesseract is good solution.
For compiling it look http://iphone.olipion.com/cross-compilation/tesseract-ocr. For sample application see http://robertcarlsen.net/tag/tesseract
有许多库可用于从图像中提取文本。 您可以查看我的答案
将 OCR 限制为仅提供数字Tesseract SDK提供了黑名单和白名单字符的方法
使用此方法您可以限制只识别数字。
希望有帮助。
There are many libraries available for extracting text from images. You can check my answer
For restricting OCR to provide numbers only Tesseract SDK provides method as blacklist and whitelist characters
Using this method you can restrict only numbers to be recognized.
Hope it helps.