opencv——python(1)
opencv入门的基本使用[*]导入opencv模块
import cv2
2.导入numpy模块
import numpy as np
3.读取当前目录图片
img = cv2.imread("1.jpg")
4.创建图像
emptyImage = np.zeros(img.shape, np.uint8)
5.复制图像
emptyImage2 = img.copy()
6.得到图像副本，并做灰度处理
emptyImage3 = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
7.显示图像
cv2.imshow("EmptyImage", emptyImage)
cv2.imshow("EmptyImage1", img)
cv2.imshow("EmptyImage2", emptyImage2)
cv2.imshow("EmptyImage3", emptyImage3)
8.写入保存图片
cv2.imwrite("./cat2.jpg", img, )
cv2.imwrite("./cat3.jpg", img, )
cv2.imwrite("./cat.png", img, )
cv2.imwrite("./cat2.png", img, )
9.窗口等待
cv2.waitKey(0)
cv2.destroyAllWindows()
页:
[1]