python-opencv识别验证码_python+opencv 验证码识别

参考博客：https://blog.youkuaiyun.com/wang_hugh/article/details/80760940

环境配置：

pip install Image

解决错误：

pytesseract.pytesseract.TesseractNotFoundError: tesseract is not installed or it's not in your path

办法：

pytesseract.py下：tesseract_cmd = ‘D:/Program Files/Tesseract-OCR/tesseract.exe’

安装tesseract.exe,记得路径一定要保持不变，要不需要更改tess_prefix的

代码如下：

import cv2 as cv

from PIL import Image

import pytesseract #要配置tesseract-ocr 引擎的

def recognize_text():

gray = cv.cvtColor(src, cv.COLOR_BGR2GRAY)

ret, binary = cv.threshold(gray, 0, 255, cv.THRESH_BINARY_INV | cv.THRESH_OTSU)

kernel = cv.getStructuringElement(cv.MORPH_RECT, (1, 6))#去除线

binl = cv.morphologyEx(binary, cv.MORPH_OPEN, kernel)

kernel = cv.getStructuringElement(cv.MORPH_RECT, (5, 1))

open_out = cv.morphologyEx(binl, cv.MORPH_OPEN, kernel)

cv.bitwise_not(open_out, open_out)# 黑色背景变为白色背景

cv.imshow('open_out', open_out)

textImage = Image.fromarray(open_out)#从np.array 转换成，pytesseract需要接受此类型

text = pytesseract.image_to_string(textImage)

print("This OK:%s"%text)

if __name__ == '__main__':

src = cv.imread("yzm.jpg")

cv.imshow("src", src)

recognize_text()

cv.waitKey(0)

cv.destroyAllWindows()

输入：