When I use the command
img2 = cv2.normalize(img, np.zeros((150, 150)), 0, 255, cv2.NORM_MINMAX)
I get the exact same image as "img".
Why is it happening? Is it suppose to be like that?
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Christoph Rackwitz
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Does this answer your question? [Normalizing images in OpenCV](https://stackoverflow.com/questions/38025838/normalizing-images-in-opencv) – Rabinzel Jun 15 '22 at 06:16
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Did you pass a 3-channel image `img` as input? If so, you are likely to receive the same as the output. You are expected to pass a single channel as input. Try passing `img[:,:,1]`. – Jeru Luke Jun 15 '22 at 06:45
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please present a [mre]. your post lacks a concrete `img` – Christoph Rackwitz Jun 15 '22 at 08:07