Python OpenCV | cv2.imwrite() 方法

OpenCV-Python是一个Python绑定库，旨在解决计算机视觉问题。 cv2.imwrite()方法用于将图像保存到任何存储设备。这将根据当前工作目录中的指定格式保存图像。

Syntax: cv2.imwrite(filename, image)

Parameters:
filename: A string representing the file name. The filename must include image format like .jpg, .png, etc.
image: It is the image that is to be saved.

Return Value: It returns true if image is saved successfully.

示例 #1：

# Python program to explain cv2.imwrite() method
  
# importing cv2 
import cv2
  
# importing os module  
import os
  
# Image path
image_path = r'C:\Users\Rajnish\Desktop\GeeksforGeeks\geeks.png'
  
# Image directory
directory = r'C:\Users\Rajnish\Desktop\GeeksforGeeks'
  
# Using cv2.imread() method
# to read the image
img = cv2.imread(image_path)
  
# Change the current directory 
# to specified directory 
os.chdir(directory)
  
# List files and directories  
# in 'C:/Users/Rajnish/Desktop/GeeksforGeeks'  
print("Before saving image:")  
print(os.listdir(directory))  
  
# Filename
filename = 'savedImage.jpg'
  
# Using cv2.imwrite() method
# Saving the image
cv2.imwrite(filename, img)
  
# List files and directories  
# in 'C:/Users / Rajnish / Desktop / GeeksforGeeks'  
print("After saving image:")  
print(os.listdir(directory))
  
print('Successfully saved')

输出：

Before saving image:
['geeks.png']
After saving image:
['geeks.png', 'savedImage.jpg']
Successfully saved