mu and sigma for every pixel

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

Answer 1

[Image Analyst]

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.

[Image Analyst]

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?

Answer 2

[Tom Lane]

I similarly don't understand, but if your video is a 3-D array with V(i,j,:) representing pixel (i,j) for all frames, then this should do it:

params = evfit(squeeze(V(i,j,:)))