How to count the number of extrema of image's histogram
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Hi everyone, Please give me some suggest the ways to count the number of extrema of image's histogram. Thank a lot! Nice weekend for all! HongTu
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bym
el 18 de Sept. de 2011
im = imread('pout.tif');
[counts ,x]=imhist(im);
counts(x > 200)
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HongTu Nguyen
el 19 de Sept. de 2011
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Image Analyst
el 21 de Sept. de 2011
You can't estimate the number of foreground objects in your image from the image's histogram unless you know the areas of the objects in your image. For example if your foreground (objects) are brighter than thresholdValue and the size of the objects is objectArea, then you can estimate the number of objects like this:
numberOfObjects = round(sum(pixelCounts(thresholdValue:end)) / objectArea);
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