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Pytesseract OCR多配置选项

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我有pytesseract的一些问题 . 我需要将Tesseract配置为配置为接受单个数字,同时也只能接受数字,因为数字零通常与“O”混淆 .

像这样:

target = pytesseract.image_to_string(im,config='-psm 7',config='outputbase digits')

非常感谢,

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2 回答

  • 0

    tesseract-4.0.0a 支持 psm 以下 . 如果要进行单字符识别,请设置 psm = 10 . 如果您的文本仅包含数字,则可以设置 tessedit_char_whitelist=0123456789 .

    Page segmentation modes:
      0    Orientation and script detection (OSD) only.
      1    Automatic page segmentation with OSD.
      2    Automatic page segmentation, but no OSD, or OCR.
      3    Fully automatic page segmentation, but no OSD. (Default)
      4    Assume a single column of text of variable sizes.
      5    Assume a single uniform block of vertically aligned text.
      6    Assume a single uniform block of text.
      7    Treat the image as a single text line.
      8    Treat the image as a single word.
      9    Treat the image as a single word in a circle.
     10    Treat the image as a single character.
     11    Sparse text. Find as much text as possible in no particular order.
     12    Sparse text with OSD.
     13    Raw line. Treat the image as a single text line,
                            bypassing hacks that are Tesseract-specific.
    

    以下是具有多个参数的 image_to_string 的示例用法 .

    target = pytesseract.image_to_string(image, lang='eng', boxes=False, \
            config='--psm 10 --oem 3 -c tessedit_char_whitelist=0123456789')
    

    希望这可以帮助 .

  • 32

    您遇到问题的原因是因为版本4.0中的字符限制不起作用 . 您必须强制传统模式(oem 0)才能限制找到的字符 . 在tesseract团队的某个地方有一个他们尚未解决的问题 .

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