Display image using Open cv

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by vigneshchennai74 dot icon Updated: Feb 17, 2023

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This code will provide an example of using OpenCV, a popular computer vision library, to read and display an image file. OpenCV allows developers to easily load, manipulate, and display image data in various ways. Specifically, it reads an image file. This code can be helpful in many applications involving image processing, such as facial recognition, object detection, and image segmentation. 

Some possible applications of this code include: 

Developing a social media platform that allows users to upload and share photos and using OpenCV to display those photos in a user-friendly way. 

Creating a computer vision project that analyzes medical images, such as X-rays or MRIs, and uses OpenCV to display the analysis results. 

  • cv2.imshow() is a function from the OpenCV (Open Source Computer Vision Library) module in Python, used for displaying images in a window. The function takes two arguments - the first argument is a string, the title of the window, and the second argument is the image data as a NumPy array. 
  • cv2.waitKey(0) function waits for a keyboard event for an infinite amount of time (i.e., until a key is pressed) and returns the ASCII value of the key that was pressed. This specific code waits for a key event before closing the window. It is often used in computer vision and image processing applications to allow the user to interact with displayed images. 
  • cv2.destroyAllWindows() function destroys all the windows that have been created. It is used to close all open windows and release the associated resources.  

This code will provide a starting point for many more advanced image processing and computer vision applications.