how to calculate black pixel ratio by dividing image into blocks

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javeed miyandad
javeed miyandad on 7 Mar 2011
good evening sir
i have a binary image of size 320X640 and i need to divide image into 32X64 blocks ie totally there will be 100 blocks,
i need to calculate ratio of black pixel and white pixel of EACH BLOCK of image and store it in a matrix of size 32X64
plz help me

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Accepted Answer

Sean de Wolski
Sean de Wolski on 7 Mar 2011
blkproc(I,[32 64],@(x)sum(~x(:))/sum(x(:)))
Won't the result by 10x10?

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