1.opencv库简单的操作图片
# coding = utf-8 # 书籍：<<学习opencv>> import cv2 from matplotlib import pyplot as plt import numpy as np # 读取图片 img = cv2.imread("girl.jpg", cv2.IMREAD_GRAYSCALE) # 保存图片 # cv2.imwrite("girl.png", img) # 在名为xxx的窗口下展示图片 # cv2.imshow("image", img) # cv2.namedWindow("image", cv2.WINDOW_NORMAL) # 等待按键事件退出 # k = cv2.waitKey() # if k == 27: # cv2.destroyAllWindows() # elif k == ord('s'): # cv2.imwrite("girl.bmp", img) plt.imshow(img, cmap='gray', interpolation='bicubic') # plt.xticks([]), plt.yticks([]) plt.show()