Mantiuk, Rafal K, Ashraf, Maliha 
ORCID: 0000-0002-8142-5611 and Chapiro, Alexandre
(2022)
stelaCSF - A Unified Model of Contrast Sensitivity as the Function of Spatio-Temporal Frequency, Eccentricity, Luminance and Area.
ACM TRANSACTIONS ON GRAPHICS, 41 (4).
pp. 1-16.
Abstract
<jats:p>A contrast sensitivity function, or CSF, is a cornerstone of many visual models. It explains whether a contrast pattern is visible to the human eye. The existing CSFs typically account for a subset of relevant dimensions describing a stimulus, limiting the use of such functions to either static or foveal content but not both. In this paper, we propose a unified CSF, stelaCSF, which accounts for all major dimensions of the stimulus: spatial and temporal frequency, eccentricity, luminance, and area. To model the 5-dimensional space of contrast sensitivity, we combined data from 11 papers, each of which studied a subset of this space. While previously proposed CSFs were fitted to a single dataset, stelaCSF can predict the data from all these studies using the same set of parameters. The predictions are accurate in the entire domain, including low frequencies. In addition, stelaCSF relies on psychophysical models and experimental evidence to explain the major interactions between the 5 dimensions of the CSF. We demonstrate the utility of our new CSF in a flicker detection metric and in foveated rendering.</jats:p>
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | contrast sensitivity, foveated rendering, visual perception |
| Divisions: | Faculty of Health and Life Sciences Faculty of Health and Life Sciences > Institute of Population Health |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 06 Sep 2022 14:38 |
| Last Modified: | 15 Dec 2023 09:06 |
| DOI: | 10.1145/3528223.3530115 |
| Open Access URL: | https://dl.acm.org/doi/abs/10.1145/3528223.3530115 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3163636 |
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