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Volume: 28 | Article ID: art00007
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The Role of Lightness Perception in Determining the Perceived Contrast of Real World Scenes
  DOI :  10.2352/ISSN.2470-1173.2016.6.RETINEX-022  Published OnlineFebruary 2016
Abstract

We investigate the impact of the background luminance upon the perceived image quality of real world scenes. To do so, we generate a set of small image patches that span the full range of mean luminance values and contrasts that may be displayed upon a monitor with a finite luminance range. Subjects viewed the images on a uniform black, grey or white surround and were asked to rate the perceived quality on a scale from 0 to 9. We find that that the maximum image quality scores occur for images with a mean luminance of less than half, consistent with the image being passed through a compressive non-linearity before contrast is computed. Moreover, the maximum image quality scores occur at lower mean luminance levels when the background luminance is darker, a pattern consistent with investigations into lightness perception. We conclude that models of contrast perception require an adaptive model of lightness perception. However, we also note the considerable challenge of developing a model of lightness perception that can generalize to any given display configuration.

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David Kane, Marcelo Bertalmío, "The Role of Lightness Perception in Determining the Perceived Contrast of Real World Scenesin Proc. IS&T Int’l. Symp. on Electronic Imaging: Retinex at 50,  2016,  https://doi.org/10.2352/ISSN.2470-1173.2016.6.RETINEX-022

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Copyright © Society for Imaging Science and Technology 2016
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Electronic Imaging
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