CODEWITHSUNDEEP
pythonnumpyopencv
VanasisB
VanasisB

Reputation: 141

Change pixel intensity range from [0,255] to [0,1]

i want to change pixel range from [0,255] to [0,1] in opencv. Is there any pre-made functions in numpy or openCV to do that? Or i need to do it handy!?

Can i use cv.normalize?

norm_image = cv2.normalize(img, None, alpha = 0, beta = 1, norm_type = cv2.NORM_MINMAX, dtype = cv2.CV_64F)

Upvotes: 2

Views: 8364

Answers (1)

willeM_ Van Onsem
willeM_ Van Onsem

Reputation: 476557

An opencv image is just a numpy array. You can thus convert the type to a float (or another number type that can work with fractional numbers), and then divide by 255.

So if you have an image a, then you can convert it with:

b = a.astype(float) / 255

Upvotes: 3

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