Misidentifying illuminant changes in natural scenes due to failures in relational colour constancy

SMC Nascimento, DH Foster - Proceedings of the …, 2023 - royalsocietypublishing.org
The colours of surfaces in a scene may not appear constant with a change in the colour of
the illumination. Yet even when colour constancy fails, human observers can usually …

Psychophysical estimates of the number of spectral-reflectance basis functions needed to reproduce natural scenes

SMC Nascimento, DH Foster, K Amano - JOSA A, 2005 - opg.optica.org
Theoretical analyses of spectral reflectances of natural surfaces suggest that their perceived
colors can be well reproduced by approximations comprising combinations of three or four …

[HTML][HTML] The effect of photopigment optical density on the color vision of the anomalous trichromat

PBM Thomas, MA Formankiewicz, JD Mollon - Vision research, 2011 - Elsevier
We present a theoretical model to estimate the influence of photopigment optical density
(OD) on the color vision of anomalous trichromats. Photopigment spectral sensitivities are …

An LED-based lighting system for acquiring multispectral scenes

M Parmar, S Lansel, J Farrell - Digital Photography VIII, 2012 - spiedigitallibrary.org
The availability of multispectral scene data makes it possible to simulate a complete imaging
pipeline for digital cameras, beginning with a physically accurate radiometric description of …

Contributions of rhodopsin, cone opsins, and melanopsin to postreceptoral pathways inferred from natural image statistics

PA Barrionuevo, D Cao - JOSA A, 2014 - opg.optica.org
Visual neural representation is constrained by the statistical properties of the environment.
Prior analysis of cone pigment excitations for natural images revealed three principal …

[HTML][HTML] Number of perceptually distinct surface colors in natural scenes

I Marin-Franch, DH Foster - Journal of Vision, 2010 - jov.arvojournals.org
The ability to perceptually identify distinct surfaces in natural scenes by virtue of their color
depends not only on the relative frequency of surface colors but also on the probabilistic …

Visual sensitivity to color errors in images of natural scenes

MA Aldaba, JMM Linhares, PD Pinto… - Visual …, 2006 - cambridge.org
Simple color-difference formulae and pictorial images have traditionally been used to
estimate the visual impact of color errors introduced by image-reproduction processes. But …

[HTML][HTML] Colour expectations across illumination changes

H Karimipour, C Witzel - Vision Research, 2024 - Elsevier
This study investigates human expectations towards naturalistic colour changes under
varying illuminations. Understanding colour expectations is key to both scientific research on …

Hyperspectral image reconstruction for spectral camera based on ghost imaging via sparsity constraints using v-dunet

Z Chen, Z Liu, C Hu, H Wu, J Wu, J Lin, Z Tong… - arXiv preprint arXiv …, 2022 - arxiv.org
Spectral camera based on ghost imaging via sparsity constraints (GISC spectral camera)
obtains three-dimensional (3D) hyperspectral information with two-dimensional (2D) …

[HTML][HTML] Can illumination estimates provide the basis for color constancy?

JJM Granzier, E Brenner, JBJ Smeets - Journal of Vision, 2009 - iovs.arvojournals.org
Abstract Objects hardly appear to change color when the spectral distribution of the
illumination changes: a phenomenon known as color constancy. Color constancy could …