How to Display Multiple Images in One Window using OpenCV Python? Last Updated : 03 Jan, 2023 Improve Improve Like Article Like Save Share Report Prerequisites: Opencv In this article, we will show how to display Multiple Images In One window using OpenCV in Python. Approach Import module Load the Multiple images using cv2.imread() Concatenate the images using concatenate(), with axis value provided as per orientation requirement Display all the images using cv2.imshow() Wait for keyboard button press using cv2.waitKey() Exit window and destroy all windows using cv2.destroyAllWindows() Functions Used cv2.imread(): reads an image file from the given specific location concatenate((image1,image2), axis): concatenates multiple images along a given mentioned axis (horizontal or vertical), The value of axis is given as 1 for combining them horizontally and 0 for combining them vertically. cv2.imshow(): displays an image in a window cv2.waitKey(): is a keyboard binding function. Its argument is the time in milliseconds. The function waits for specified milliseconds for any keyboard event. cv2.destroyAllWindows(): If you have multiple windows open and you do not need those to be open, you can use cv2.destroyAllWindows() to close those all. Program: Python3 import cv2 import numpy as np # Read First Image img1 = cv2.imread('GFG.png') # Read Second Image img2 = cv2.imread('GFG.png') # concatenate image Horizontally Hori = np.concatenate((img1, img2), axis=1) # concatenate image Vertically Verti = np.concatenate((img1, img2), axis=0) cv2.imshow('HORIZONTAL', Hori) cv2.imshow('VERTICAL', Verti) cv2.waitKey(0) cv2.destroyAllWindows() Input: GFG.png Output: Like Article Suggest improvement Next How to Display an OpenCV image in Python with Matplotlib? Share your thoughts in the comments Add Your Comment Please Login to comment...