Numpy + OpenCV-Python : Get coordinates of white pixels [duplicate]

问题

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Numpy binary matrix - get rows and columns of True elements (1 answer)

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I have a grayscale image and I want to get all the coordinates of pixels with intensity level 255.

I tried using:

pixels = np.where(img[img == 255])

But instead of getting a list of (X,Y) coordinates, I got a list of numbers, like if img was a one dimensional vector.

What am I doing wrong?

来源：https://stackoverflow.com/questions/43632498/numpy-opencv-python-get-coordinates-of-white-pixels