OpenCV-Python 教程 (2): 环境安装和图像显示

pip install opencv-python

#!/usr/bin/python
# -*- coding: UTF-8 -*-
 
import cv2 as cv
 
img = cv.imread('demo.png', cv.IMREAD_UNCHANGED) # 按原始颜色格式读取图片
# img = cv.imread('demo.png', cv.IMREAD_GRAYSCALE) # 按灰度图读取图片
print img.shape # 输出：(120, 240, 3)
 
cv.namedWindow("image")
cv.imshow('image', img)
cv.waitKey (0)
cv.destroyAllWindows()