Normalize an image from 0 to 1

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Bárbara Maurício
Bárbara Maurício 2021-1-10
评论： Bárbara Maurício 2021-1-10
Im trying to normalize an image from 0 to 1,after having used rgb2gray. However using mat2gray and im2double is only giving me 0 and 1 values, nothing in between. I also need to use the equation (I-min(I))/(max(I)-min(I)) and somehow I still can only get zeros and ones.

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Image Analyst
Image Analyst 2021-1-10
mat2gray() and rescale() will both work. If you're only getting 0 and 1 then you have only two gray levels in your image. Post your image so I can check it.
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Bárbara Maurício
Bárbara Maurício 2021-1-10
Thank you for answering I have now managed to solve it but still appreciated!

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