OpenCV Image Splitting Quiz
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Questions and Answers

What does the variable 'half_width' represent in the given code?

  • The width of the image multiplied by 2
  • The width of the image divided by 2 (correct)
  • The width of the image minus 2
  • The height of the image divided by 2

    • Why is 'cv2.imshow()' used in the provided code?

  • To display images (correct)
  • To read the image from a file
  • To split images
  • To save the image to a file

    • What happens if 'cv2.waitKey(0)' is removed from the code?

  • The images will be saved to a file
  • The images will be split into more quadrants
  • The code will throw an error
  • The images will not be displayed (correct)

    • How are the four quadrants created in the given function?

    <p>By slicing the original image based on dimensions</p> Signup and view all the answers

    What does 'cv2.destroyAllWindows()' do in the provided code?

    <p>Closes all open windows</p> Signup and view all the answers

    Study Notes

    Image Processing with OpenCV

    • The split_image function is used to divide an image into four quadrants.
    • The function takes an image_path as an input, which is the path to the image file.

    Image Loading and Dimensions

    • The cv2.imread function is used to read the image from the specified path.
    • The image.shape attribute returns a tuple containing the dimensions of the image (height, width, channels).

    Calculating Quadrant Dimensions

    • The half_width and half_height variables are calculated by dividing the image dimensions by 2.
    • These variables are used to split the image into quadrants.

    Splitting the Image

    • The image is divided into four quadrants: top_left, top_right, bottom_left, and bottom_right.
    • Each quadrant is a subset of the original image, defined by its coordinates (height, width).

    Displaying the Quadrants

    • The cv2.imshow function is used to display each quadrant in a separate window.
    • The cv2.waitKey function is used to wait for a keyboard event, and cv2.destroyAllWindows is used to close all OpenCV windows.

    Example Usage

    • The image_path variable is set to "example_image.jpg", which should be replaced with the actual image file path.
    • The split_image function is called with the image_path as an argument to split and display the image.

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    Description

    Test your knowledge on splitting images into quadrants using OpenCV. Learn how to use Python and the cv2 library to divide images efficiently for processing or analysis.

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