cv2 读取图片及展示

import cv2

img = cv2.imread ('C:/Users/Administrator/Pictures/test1.jpg',0)    # 读取图片，第二个参数0是灰色，1是彩色
img2 = cv2.imread ('C:/Users/Administrator/Pictures/test1.jpg',1)

#jpg保存
cv2.imwrite('C:/Users/Administrator/Pictures/write1.jpg',img)       #写入图片   jpg有损压缩，png无损压缩
cv2.imwrite('C:/Users/Administrator/Pictures/write2.jpg',img2,[cv2.IMWRITE_JPEG_QUALITY,50])    #最后一个参数控制图片质量 0-100
#png保存
cv2.imwrite('C:/Users/Administrator/Pictures/write1.png',img2,[cv2.IMWRITE_PNG_COMPRESSION,9])    #最后一个参数为压缩倍数 0-9

cv2.imshow('pic_name',img) #展示图片 1 name 2 img cv2.waitKey(0) #停止程序，否则展示太快，看不

 

转载于:https://www.cnblogs.com/cxhzy/p/11008508.html