how to measure the contrast ratio of input and enhanced image?

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prashant sharma
prashant sharma on 11 Dec 2016
Edited: Walter Roberson on 4 Jul 2020
i,m trying to calculate the contrast ratio as a parameter for quality check for an image,can some tell me how to calculate the contrast ratio?

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Answers (2)

Image Analyst
Image Analyst on 11 Dec 2016
How are you measuring it? Why not search the File Exchange for contrast: https://www.mathworks.com/matlabcentral/fileexchange/?utf8=%E2%9C%93&term=contrast
or check some of the links on the right side of this page?
r r
r r on 4 Jul 2020
Edited: Walter Roberson on 4 Jul 2020
I have a image that contains a tumor and I want to calculate the contrast ratio for this tumor. Is this method correct? Thank you
I found this example but I don't need you.
https://www.mathworks.com/matlabcentral/fileexchange/46257-digital-mammography-image-enhancement-using-improved
I want to calculate the contrast ratio for the tumor region and the background

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