Find CDF in image
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Hello, I have an image and i want use CDF function for find CDF 0.5. How can use CDF function in matlab? I read help but i can't understand well. Thanks
I = imread('cameraman.tif');
%%FIND CDF 0.5 for this image.
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Image Analyst
2016년 5월 2일
Perhaps something like this to find the cumulative distribution function (integral of the histogram):
counts = histcounts(grayImage);
cdf = cumsum(counts)/sum(counts);
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Image Analyst
2016년 5월 2일
Dani's "Answer" moved here because it's a comment to me rather than an Answer to her original question:
Thanks, But CDF 0.5 is point which half pixel is left and half pixel should right. CDF 0.5 is one point (is pixel)
Image Analyst
2016년 5월 2일
Not sure what that means exactly, but if you want the median value you can use
medianValue = median(I(:));
You should get close the the same value if you use find on cdf
medianValue = find(cdf >= 0.5, 1, 'first');
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