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Related Experiment Video

Updated: May 25, 2026

Measuring Spatially- and Directionally-varying Light Scattering from Biological Material

Measuring Spatially- and Directionally-varying Light Scattering from Biological Material

Published on: May 20, 2013

Lightness perception in high dynamic range images: local and remote luminance effects.

Sarah R Allred¹, Ana Radonjic, Alan L Gilchrist

¹Department of Psychology, Rutgers, The State University of New Jersey, Camden, NJ, USA. srallred@camden.rutgers.edu

Journal of Vision

|February 11, 2012

Summary

Visual perception of lightness depends on surrounding context. This study reveals that a three-parameter adaptation model, including the target patch, best explains how surrounding luminance affects perceived lightness.

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Visualizing Visual Adaptation

Visualizing Visual Adaptation

Published on: April 24, 2017

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Last Updated: May 25, 2026

Measuring Spatially- and Directionally-varying Light Scattering from Biological Material

Measuring Spatially- and Directionally-varying Light Scattering from Biological Material

Published on: May 20, 2013

Visualizing Visual Adaptation

Visualizing Visual Adaptation

Published on: April 24, 2017

Area of Science:

Visual perception
Computational neuroscience
Color science

Background:

Perceived lightness is influenced by the luminance of surrounding visual elements.
Previous models of adaptation have focused on multiplicative gain and subtractive adaptation.

Purpose of the Study:

To quantify the relationship between surrounding luminance and perceived lightness.
To develop an improved model of visual adaptation that accounts for contextual effects.

Main Methods:

Measured perceived lightness of target patches within high dynamic range checkerboards.
Independently varied luminance of local and remote surrounding checks.
Developed and tested a three-parameter adaptation model.

Main Results:

Context transfer functions (CTFs) were established, showing luminance matches vary with context.
Simple multiplicative or additive adaptation models did not fully describe the data.
A three-parameter model, incorporating local and remote contrasts and an interaction term, provided a good fit.
The target patch's luminance was found to be crucial for describing visual context.

Conclusions:

Perceived lightness is modulated by both local and remote visual context.
A more complex adaptation model is needed to fully explain contextual influences on lightness perception.
The target patch itself should be considered part of the visual context for accurate modeling.