mu and sigma for every pixel

Question

swati 2012-5-29

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/39707-mu-and-sigma-for-every-pixel

采纳的回答： Image Analyst

how to calculate mu and sigma for every pixel of a frame of a video or help me in using evfit for this situation

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Answer 1

Image Analyst 2012-5-29

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链接

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https://ww2.mathworks.cn/matlabcentral/answers/39707-mu-and-sigma-for-every-pixel#answer_49351

在 MATLAB Online 中打开

mu is the pixel value. sigma is zero.

mu = mean(rgbImage(row, column, colorChannel));  % Same as the pixel value.
sigma = std(rgbImage(row, column, colorChannel));  % This will be zero since it's just one value.

I never heard of evfit. You can reword your question if you didn't fully explain the situation the first time.

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Image Analyst 2012-6-1

You accepted? Do you realize that the code above is basically a joke and was just meant to prod you into a better, more accurate description of what you really need?

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