这是一个示例 PNG 文件:
它包含以下文本(基本 base64 输出):
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
文本 md5sum: dafb20fbfaff84e16e9ff95a4d92fa3d
我已经尝试过https://help.ubuntu.com/community/OCROCR 软件,但是哇...对于这个例子来说它们毫无价值,它们在识别的文本中输出了太多的错误。
问题:我遗漏了什么?这是一张高质量的 PNG(来自终端的屏幕截图)。或者有什么技巧可以让 OCR 软件识别时不会出错?或者我应该增加屏幕截图中的字体大小吗?