#-*- coding: utf-8 -*-# 读取，保存，显示图片import cv2 as cv# 读取为灰度图片img = cv.imread("../../datas/images/fish.jpg",0)# 保存图片cv.imwrite("../../datas/images/fish-gray.jpg",img=img)# 显示图片cv.imshow("img-gray",img)'''# 通过Matplotlib显示图片#import  matplotlib.pyplot as plt#plt.imshow(img,cmap='gray',interpolation='bicubic')#plt.xticks([])#plt.yticks([])#plt.show()#cv.waitKey()#cv.destroyAllWindows()'''cv.waitKey()cv.destroyAllWindows()'''# 等待事件# key = cv.waitKey(10)# if key == 27:# ESC# 销毁所有窗口#cv.destroyAllWindows()'''