HIstogram comparision of two color images and store it in a database
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how can i compare two histograms and display that whether two images are matched or not??
Answers (2)
Chad Greene
on 31 Mar 2015
Edited: Chad Greene
on 31 Mar 2015
0 votes
If you have Matlab 2014b or 2015a, you can use histogram and specify 'facealpha' to make the bars semitransparent. If you have an older version of Matlab, use histf.
Image Analyst
on 31 Mar 2015
Edited: Image Analyst
on 31 Mar 2015
Just compare the counts to see if the histograms are different.
[counts1, grayLevels1] = imhist(image1(:,:,1)); % Red channel of image 1
[counts2, grayLevels2] = imhist(image2(:,:,1)); % Red channel of image 2
sameHist = all(counts1 == counts2);
Do it for all the other color channels too. Note well that having the same histogram does NOT mean the images will look the same . Not by a long shot as simple thought experiments will reveal to you. I mean you could just scramble around the pixels and get a totally different looking image that has the identical histogram.
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on 31 Mar 2015
on 31 Mar 2015
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