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Python OpenCV | cv2.imshow() method

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  • Difficulty Level : Easy
  • Last Updated : 02 Sep, 2020

OpenCV-Python is a library of Python bindings designed to solve computer vision problems. cv2.imshow() method is used to display an image in a window. The window automatically fits to the image size.
 

Syntax: cv2.imshow(window_name, image)
Parameters: 
window_name: A string representing the name of the window in which image to be displayed. 
image: It is the image that is to be displayed.
Return Value: It doesn’t returns anything. 
 

Image used for all the below examples: 
 

Example #1: 
 




# Python program to explain cv2.imshow() method 
  
# importing cv2 
import cv2 
  
# path 
path = r'C:\Users\Rajnish\Desktop\geeksforgeeks.png'
  
# Reading an image in default mode
image = cv2.imread(path)
  
# Window name in which image is displayed
window_name = 'image'
  
# Using cv2.imshow() method 
# Displaying the image 
cv2.imshow(window_name, image)
  
#waits for user to press any key 
#(this is necessary to avoid Python kernel form crashing)
cv2.waitKey(0
  
#closing all open windows 
cv2.destroyAllWindows() 

Output: 
 

Example #2: 
 




# Python program to explain cv2.imshow() method
  
# importing cv2
import cv2
  
# path
path = r'C:\Users\Rajnish\Desktop\geeksforgeeks.png'
  
# Reading an image in grayscale mode
image = cv2.imread(path, 0)
  
# Window name in which image is displayed
window_name = 'image'
  
# Using cv2.imshow() method
# Displaying the image
cv2.imshow(window_name, image)
  
# waits for user to press any key
# (this is necessary to avoid Python kernel form crashing)
cv2.waitKey(0)
  
# closing all open windows
cv2.destroyAllWindows()

Output: 
 

 


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