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Python OpenCV – cv2.flip() method
  • Last Updated : 08 Jul, 2020

OpenCV-Python is a library of programming functions mainly aimed at real-time computer vision. cv2.flip() method is used to flip a 2D array. The function cv::flip flips a 2D array around vertical, horizontal, or both axes.

Syntax: cv2.cv.flip(src, flipCode[, dst] )

Parameters:
src: Input array.
dst: Output array of the same size and type as src.
flip code: A flag to specify how to flip the array; 0 means flipping around the x-axis and positive value (for example, 1) means flipping around y-axis. Negative value (for example, -1) means flipping around both axes.

Return Value: It returns an image.

Image used for all the below examples:



Example:




# Python program to explain cv2.flip() method
  
# importing cv2
import cv2
  
# path
path = r'C:\Users\user\Desktop\geeks14.png'
  
# Reading an image in default mode
src = cv2.imread(path)
  
# Window name in which image is displayed
window_name = 'Image'
  
# Using cv2.flip() method
# Use Flip code 0 to flip vertically
image = cv2.flip(src, 0)
  
# Displaying the image
cv2.imshow(window_name, image)
cv2.waitKey(0)

Output:

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