python - pillow pytesseract 数字图片识别问题？？？？？

Answer 1

在识别之前做一些基本的图片处理，可以提高识别率：
im = Image.open(img_name)
enhancer = ImageEnhance.Color(im)
enhancer = enhancer.enhance(0)
enhancer = ImageEnhance.Brightness(enhancer)
enhancer = enhancer.enhance(2)
enhancer = ImageEnhance.Contrast(enhancer)
enhancer = enhancer.enhance(8)
enhancer = ImageEnhance.Sharpness(enhancer)
im = enhancer.enhance(20)
print pytesseract.image_to_string(im)