pytesseract模块验证码图片识别

#效果不是很好   加上灰度处理和二值化处理  就变好了
import pytesseract
from PIL import Image
from PIL import ImageEnhance

#打开图片
img = Image.open('f7vf.png')

#提高辨识度
img = img.convert('RGB')
enhancer = ImageEnhance.Color(img)
enhancer = enhancer.enhance(0)
enhancer = ImageEnhance.Brightness(enhancer)
enhancer = enhancer.enhance(2)
enhancer = ImageEnhance.Contrast(enhancer)
enhancer = enhancer.enhance(8)
enhancer = ImageEnhance.Sharpness(enhancer)
img = enhancer.enhance(20)

#转化为灰度图片
img = img.convert('L')
#img.show()
# exit()
#二值化处理
threshold = 140
table = []
for i in range(256):
    if i < threshold:
        table.append(0)
    else:
        table.append(1)
out = img.point(table,'1')
# out.show()
# exit()


#识别图片
print(pytesseract.image_to_string(img))