python opencv查看图片中任一点的像素 BGR值 灰度值 HSV值

    # -*- coding:utf-8 -*-
    
    import cv2
    
    img = cv2.imread('11_13/120002.jpg')
    gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
    hsv = cv2.cvtColor(img, cv2.COLOR_BGR2HSV)