On the Number of Intensity Levels Discriminated in Textures
- 1 February 1984
- journal article
- research article
- Published by SAGE Publications in Perception
- Vol. 13 (1) , 21-31
- https://doi.org/10.1068/p130021
Abstract
The number of intensity levels detected in briefly displayed textures was studied as a function of two related spatial parameters: granularity and spatial frequency. A texture-discrimination paradigm was used to determine the discriminability of an original texture and of a version of it reduced (further ‘quantized’) in intensity levels over a range of texture granularities and frequency bandwidths. Results show specific sensitivities to intensity level reductions as a function of the spatial-frequency composition of the textures, with particular loss of sensitivity in the higher spatial-frequency regions.Keywords
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