Article

Low level feature detection in human vision

2009-01-01

Abstract excerpt

Influential models of edge detection have generally supposed that an edge is detected at peaks in the 1st derivative of the luminance profile, or at zero-crossings in the 2nd derivative. However, when presented with blurred triangle-wave images, observers consistently marked edges not at these locations, but at peaks in the 3rd derivative. This new phenomenon, termed ‘Mach edges’ persisted when a luminance ramp wa...

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Literature Corpus work: 9058b2dd-1b31-50d4-8439-38730b84c054
DOI: 10.48780/publications.aston.ac.uk.00015404

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