Edge detection - University of Nevada, Reno
• The Prewitt edge detector-Consider the arrangement of pixels about the pixel (i, j): a0 a7 a6 a1 [i, j] a5 a2 a3 a4-The partial derivativescan be computed by: Mx =(a2 +ca3 +a4) −(a0 +ca7 +a6) My =(a6 +ca5 +a4) −(a0 +ca1 +a2)-The constantc implies the emphasis giventopixels closer to the center of the mask.-Setting c =1, we get the ...
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