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Measurement of CIELAB spatio-chromatic contrast sensitivity in different spatial and chromatic directions

Kitanovski, Vlado; Reed, Alastair; Falkenstern, Kristyn; Pedersen, Marius
Journal article
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Kitanovski (Locked)
URI
https://hdl.handle.net/11250/2649277
Date
2019
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  • Institutt for datateknologi og informatikk [7423]
  • Publikasjoner fra CRIStin - NTNU [41946]
Original version
Final program and proceedings (Color and Imaging Conference). 2019, 326-330.   https://doi.org/10.2352/issn.2169-2629.2019.27.59
Abstract
This paper presents data on CIELAB chromatic contrast sensitivity collected in a psychophysical experiment. To complement previously published data in the low-frequency range, we selected five spatial frequencies in the range from 2.4 to 19.1 cycles per degree (cpd). A Gabor stimulus was modulated along six chromatic directions in the a*-b* plane. We also investigated the impact on contrast sensitivity from spatial orientations – both vertically and diagonally oriented stimuli were used. The analysis of the collected data showed lowest contrast sensitivity in the chromatic direction of around 120° from the positive a*-axis. The contrast sensitivity in the diagonal spatial orientation is slightly lower when compared to the vertical orientation.
Publisher
Society for Imaging Science and Technology
Journal
Final program and proceedings (Color and Imaging Conference)

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