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Summary: Edge enhancement postprocessing using artificial dissipation
A. Averbuch1
B. Epstein2
N. Fishelov1
E. Turkel3
1
School of Computer Sciences
Tel Aviv University, Tel Aviv 69978, Israel
2
The Academic College of Tel Aviv - Yaffo
4 Antokolsky street, Tel Aviv, 64044, Israel
3
School of Mathematical Sciences
Tel Aviv University, Tel Aviv 69978, Israel
Abstract
We present a method to enhance, by post-processing, the performance of gradient-based edge
detectors. It improves the performance of the edge detector by adding terms which are similar to
the artificial dissipation that appear in the numerical solution of hyperbolic PDEs. This term is
added to the output of the edge detector. The edges that are missed or blurred by the edge detector
are reconstructed through the addition of the artificial dissipation terms. Edges that are detected
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