MATLAB: Matching Filtered Histograms to an image

filtershistogramImage Processing Toolboxmatching

Can filtered histograms be from the same image if they looked the same?

Best Answer

Yes, they could. If you take the histogram of an image, and then take the histogram of the same image again, the histograms will look the same, as long as you "filtered" them the same way. After all, it's the same image so why shouldn't they?

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MATLAB: Ii want to know about, How to find a histogram of an uint8 image with 16 amplitude bins

histogram(YourImage(:), 16)

MATLAB: How i can seperate the determined area from the background in the image shown below then count the colours i have in the area using matlab ?.thanks

You can just get the max of the labeled image, then use ismember() to pull out the region you want

numRegions = max(labeledImage(:))
regionYouWant = 3; % Whatever number you want.
extractedRegion = ismember(labeledImage, regionYouWant);

Of course you can also get the number of regions from bwlabel() or bwconncomp() when you created the labeled image from the binary image:

[labeledImage, numRegions] = bwlabel(binaryImage);

It will be the same as taking the max of the labeled image.

Best Answer

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MATLAB: Ii want to know about, How to find a histogram of an uint8 image with 16 amplitude bins

MATLAB: How i can seperate the determined area from the background in the image shown below then count the colours i have in the area using matlab ?.thanks

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