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Angular frequency filtering: A basis for pattern decomposition

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image of Spatial Vision
For more content, see Multisensory Research and Seeing and Perceiving.

Much insight has been gained into the nature of early vision by postulating that the system encodes patterns by means of channels, or filters, tuned to specific orientations and spatial frequencies. We argue that a different decomposition, in terms of radially and rotationally symmetrical filters, is equally plausible, both in terms of the geometry of the eye and the ecology of visual pattern recognition. We demonstrate experimentally some of the properties of angular frequency filtering.

Affiliations: 1: Laboratorio de Percepcao Visual, Mestrado em Psicologia, Universidade Federal de Pernambuco, Recife, PE, Brazil 50739; 2: Department of Psychology, Queen's University at Kingston, Kingston, Ontario, Canada K7L 3N6


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