opencv+python (3)

实现图像反色：

实现原理：

读取每个像素值P，再将255-P写入新的图片中;

对于灰度图，只有一个通道，所以 img2[i,j] = (255-image[i,j]) ;

对于彩色图片，则要RGB值分别做处理，255-image[i,j][0],255-image[i,j][1],255-image[i,j][2];

灰度图：

def inverse_color(image):

    height,width = image.shape
    img2 = image.copy()

    for i in range(height): for j in range(width): img2[i,j] = (255-image[i,j]) return img2

彩色图：

def inverse_color(image):

    height,width,temp = image.shape
    img2 = image.copy()

    for i in range(height): for j in range(width): img2[i,j] = (255-image[i,j][0],255-image[i,j][1],255-image[i,j][2]) return img2

https://blog.csdn.net/geyalu/article/details/50190121