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Next: Sobel Filter Up: 12.3.5 Useful Convolution Filters Previous: Basic High-Pass Filter: 5x5

Laplacian Filter

The Laplacian is used to enhance discontinuities. The 3x3 kernel is:
displaymath8131
and the 5x5 is:
displaymath8132

David Blythe
Thu Jul 17 21:24:28 PDT 1997