How to Flip an Image in OpenCV Python

You can flip an image in OpenCV Python by following the given steps. I highly recommend you get the “Computer Vision: Models, Learning, and Inference Book” to learn Computer Vision.

Step 1

Open the Spyder IDE (integrated development environment).

Step 2

Import the OpenCV library. If OpenCV is not installed in your system then first install it using This Method.

import cv2 
#cv2 is used for OpenCV library

Step 3

Now read the image from the location. In my case “F:\\AiHints” is the location and “top30.jpg” is the name of the image. Change it according to your image location and name.

image = cv2.imread("F:\\AiHints\\top30.jpg")
#imread is use to read an image from a location

Step 4

In this step, I will flip the above image vertically and save it with the new name “VFlip.jpg”.

cv2.flip(image, 0) # vertically flip
cv2.imwrite('F:\\AiHints\\VFlip.jpg',image)

Step 5

In this step, I will flip the image horizontally and save it with the new name “HFlip.jpg”.

cv2.flip(image, 1) # horizontally flip
cv2.imwrite('F:\\AiHints\\HFlip.jpg',image)

Step 6

In this step, I will flip the image horizontally and vertically and save it with the new name “H AND V Flip.jpg”.

cv2.flip(image, -1) # horizontally and vertically flip
cv2.imwrite('F:\\AiHints\\H AND V Flip.jpg',image)

Step 7

waitKey() open the image for a specific time in milliseconds until you press any key. “destroyAllWindows()” will destroy all the windows that we created.

cv2.waitKey()
cv2.destroyAllWindows()