pytesseract image_to_string 函数根本不准确 [英] pytesseract image_to_string function not accurate at all

问题描述

我的代码

for index, img in enumerate(data): # data is list of base64 decoded strings
    b64 = base64.b64decode(bytes(img[22:], encoding='utf-8'))
    raw = BytesIO(b64)
    im = Image.open(raw).convert('LA')
    pixels = im.load()
    width, height = im.size
    for x in range(width):
        for y in range(height):
            if pixels[x, y][0] > 100: pixels[x, y] = (255, 255)
            else: pixels[x, y] = (0, 255)
    print(pytesseract.image_to_string(im, config='tessedit_char_whitelist=1234567890plus?'))

我的图片:

输出:
Te Ys
我可以做些什么来使它更好，我尝试在配置中使用从 0 到 13 的每个 psm 和 -c 标志

Output:
Te Ys
What I can do to make this better, I tried to use every psm from 0 to 13 and -c flag in config

推荐答案

这段代码对我来说效果很好，但没有检测到空格.

This code worked fine for me but spaces were not detected.

    img = ~cv2.imread("18.png",0)
    rows,cols = img.shape[:2]
    # M = np.float32([[1,0,25],[0,1,15]])
    # img = cv2.warpAffine(img,M,(cols*2,rows*2),borderValue=(255,255,255))
    custom_oem_psm_config = r'--oem 3 --psm 3 -c tessedit_char_whitelist="1234567890plus?"'# -c preserve_interword_spaces=1'
    print(pytesseract.image_to_string(img,config=custom_oem_psm_config))

输出:

18plus16?

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