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@kemako(Mako Miyatake)

JupyterでOpenCVを使うときにdestroyAllWindows()すると固まってしまう

Posted at 2018-10-05

問題

JupyterでOpenCVを使うときにcv2.destroyAllWindows()すると固まってしまう

環境

macOS High Sierra
Jupyter notebook
OpenCV2

解決

cv2.startWindowThread()
cv2.imshow('image', img)
key = cv2.waitKey(0)

if key == ord('q'):            #qを押した時の処理
    cv2.waitKey(1)
    cv2.destroyAllWindows()
    cv2.waitKey(1)

まとめ

imshowの前にstartWindowThread()を入れる
destroyAllWindows()をwaitKey()で挟む

参考にしたリンク

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