opencv save picture

Using OpenCV can use cv2.imwrite()the function to save the picture. This function requires two parameters: filename and image data. If the picture to be saved already exists, the original picture will be overwritten.

For example, to save an image, you can use the following code:

import cv2

# 读取图片
img = cv2.imread("image.png")

# 保存图片
cv2.imwrite("image_save.png", img)

Here, "image.png" is the file name of the image to read, and "image_save.png" is the file name of the image to save.

Note: When using cv2.imwrite()the function to save a picture, the file name may need to include the file format of the picture, such as ".png" or ".jpg". It depends on the format you wish to save the picture in.