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window fixing

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javeed miyandad
javeed miyandad 2011-4-10
sir i have a image of size(mXn),i need to count black pixel from pixel(i j) with window size(32X64)
i am not geting how to fix window of(32X64) sir plz help me in coading
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Walter Roberson
Walter Roberson 2011-4-10
Do you mean go 16 pixels above to 16 below, and 32 pixels left to 32 right, and count the black pixels in that block?
If so then I note those are even numbers on each side, so there is no natural "central" pixel. How exactly do you want this window positioned with respect to a particular pixel ?

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回答（1 个）

the cyclist
the cyclist 2011-4-10
It is not clear to me what you want, but to get a section 32x64 from coordinates i,j use:
pixel(i:i+31,j:j+63)

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