2、OpenCV Python 图像属性获取

 __author__ = "WSX"
 import cv2 as cv
 import numpy as np

 image = cv.imread("1.JPG")  #获取图

 image_height = image.shape[0]
 image_width = image.shape[1]
 image_channel = image.shape[2]

 # for i in range(image_height):   #访问 每一个像素
 #     for j in range(image_width):
 #         for k in range(image_channel):
 #             temp = image[i , j , k]
 #             image[i , j , k] = 255 - temp

 New_image = cv.bitwise_not(image)    #像素取反，速度很快（依靠c代码）

 cv.namedWindow("New_image" , cv.WINDOW_AUTOSIZE)
 cv.imshow("New_image" , New_image)
 cv.waitKey(0)