OpenCV图像处理---图像像素获取和编辑

import cv2
img = cv2.imread('../0.jpg')

#获取和设置
pixel = img[100,100]  #[ 52 136 188],获取(100,100)处的像素值
print(pixel)

img[100,100] = [43, 52, 78] #设置像素值

b = img[100,100,0]    
print(b)              #43, 获取(100,100)处，blue通道像素值

g = img[100,100,1]
print(g)              #52, 获取(100,100)处，green通道像素值

r = img[100,100,2]   
print(r)              #78, 获取(100,100)处，red通道像素值

r = img[100,100,2]=99    #设置red通道值

#获取和设置
piexl = img.item(100,100,2)
print(piexl)             #99

img.itemset((100,100,2),99)
r = img[100,100,2]   
print(r)                 #99



cv2.imshow('img', img)
cv2.waitKey(0)