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Graphics Interchange Format  |  1997-01-12  |  91.0 KB  |  648x350  |  4-bit (16 colors)
   ocr: - Equations (1) variance, Russ E(centerpixel : neighbor) - : (2) variance, Leville Z(centerpixel - mean) size ofarea (3)0 - variance, Levine (4) skewness = Zcenterpixel - mean) o sizeofarea (5) output = abnolutevalucfonpulgl) L input(i + sizeli + size]) - (6) mean, Levine E(pixels ofdifference array) sizeofarea