Description: Given a normalized fingerprint image, the algorithm' s main steps are as follows:**** 1- The size of G into wxw- (15 x 15) blocks **** 2- calculated for each pixel (i , j) of the gradient dx (i, j) and dy (i, j),** according to the needs of computing the gradient operator can be from simple to complex Sobel operator Marr-Hildreth operator.**** 3- estimated dominant directions (i, j)
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