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n4google.
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isa:308320746
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A face recognition system according to claim 2,wherein the image output by said input device comprises M???N pixels, wherein M and N are positive integers, wherein said down sampling circuit comprises:a low pass filter to filter the M???N pixels; a down sampler for sampling every nth pixel from said low pass filter to output M/n???N/n pixels, wherein n is a positive integer. 4.
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isa:308320746