How to close window in yolov5 detection

[tasyoooo]

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Question

In running the detect.py in yolov5, when X button is clicked in the top right corner the window doesn't close. How to close the window without using the keyboard keys

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[glenn-jocher]

Hello there! 👋

For window closing issues after running detect.py where clicking the X button doesn't work, a simple workaround involves manually handling the window closure through OpenCV. You can add a conditional check after the cv2.imshow() call in the code to listen for the window close event (such as clicking the X button). Unfortunately, OpenCV doesn't directly support detecting the window close button event, so a common approach is to use cv2.waitKey() for a keyboard interrupt to close the window.

Please check if you're using a command like cv2.waitKey(0) or cv2.waitKey(1) after cv2.imshow(). If so, replacing it with a keyboard interrupt check to break the loop and then using cv2.destroyAllWindows() to close the window when a certain key is pressed (like 'q') is a typical solution. This doesn't directly solve the 'click X to close' issue but offers a straightforward way to close the window without modifying the library's source code.

Here is a quick example snippet that might be in your detect.py or a similar script:

while True:
    # Your code to display the frame
    cv2.imshow('frame', frame)

    # Break the loop and close the window when 'q' is pressed
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

cv2.destroyAllWindows()

As OpenCV's imshow() doesn't inherently support a direct close window button interaction, relying on keyboard interrupts remains a practical approach.

Let me know if you have more questions or need further assistance. Happy coding! 😄

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