颜色效果

代码如下：

import cv2
import numpy as np
img = cv2.imread('image1.jpg',1)
imgInfo = img.shape
height = imgInfo[0]
width = imgInfo[1]
#rgb->RGB new '蓝色'
#b=b*1.5
#g = g * 1.3
dst = np.zeros((height,width,3),np.uint8)
for i in range (0,height):
    for j in range(0,width):
        (b,g,r) = img[i,j]
        b = b * 1.5
        g = g * 1.3
        if b>255:
            b = 255
        if g>255:
            g = 255
        dst[i,j] = (b,g,r)
cv2.imshow('dst',dst)
cv2.waitKey(0)

显示图片如下：