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how can calculate the frequency of given gray scale image?...

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sumi
sumi 2014-3-25
回答： Image Analyst 2014-3-25
I am doing split and merge segmentation algorithm for segmentation. In that algorithm first will be determined bimodality parameter using frequency and variance of gray-level input image, but i dont know how to calculate frequency value from an input image...

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Image Analyst
Image Analyst 2014-3-25
I assume you mean frequency of intensity rather than spatial frequency. So just use imhist():
[pixelCounts, grayLevels] = imhist(grayImage, 256);

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