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Scale-invariant filtering design and analysis for edge detection
2011
Proceedings of the Royal Society A
Existing edge detection filters work well on straight edges but make significant errors near sharp corners by producing rounded corners. This is due to the fact that the edge maps produced by these filters are scale variant. We enhance Canny's optimality criteria to incorporate detection performance near corners as an explicit design objective. The resulting optimal filter, termed 'Bessel integral filter', can be derived analytically and exhibits superior performance over recent alternatives,
doi:10.1098/rspa.2010.0475
fatcat:aofjeciv4bdszkd37suxpkwpbm