墙上裂纹检测————OpenCV二值图反色处理

反色处理：原先图像的背景是白色，而目标是黑色的话；经过反色处理后，背景变为白色，目标变为黑色。

原图像为：

import cv2 as cv

def access_pixels(image):
    height, width, channels = image.shape
    print("width:%s,height:%s,channels:%s" % (width, height, channels))
    for row in range(height):
        for list in range(width):
            for c in range(channels):
                pv = image[row, list, c]
                image[row, list, c] = 255 - pv
    cv.imshow("binary3", image)
    cv.imwrite("binary3.bmp", image)

src = cv.imread('binary00.bmp')
cv.imshow('OriginalImage', src)

# 运行函数
access_pixels(src)
cv.waitKey()

运行程序，结果为：