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

SMC Nascimento, DH Foster - Proceedings of the …, 2023 - royalsocietypublishing.org
natural scenes and whether they are due to failures in relational colour constancy. Pairs of
scene images from hyperspectral data … larger deviations in spatial cone-excitation ratios and …

A quantitative description of macaque ganglion cell responses to natural scenes: the interplay of time and space

M Schottdorf, BB Lee - The Journal of physiology, 2021 - Wiley Online Library
… A clear response peak associated with S cone excitation is … -to-noise ratio in responses by
calculating the ratio of the peak … , during free viewing of natural scenes a mean drift rate of ca. …

Colour constancy failures expected in colourful environments

DH Foster, A Reeves - Proceedings of the Royal Society …, 2022 - royalsocietypublishing.org
… saturation with natural scenes [57]. Because deviations in spatial cone-excitation ratios refer
… The main reporting statistics for the 50 scenes are (1) the proportion of scenes in which the …

Spatial summation of individual cones in human color vision

BP Schmidt, AE Boehm, WS Tuten, A Roorda - PLoS One, 2019 - journals.plos.org
… exploiting statistical regularities in the spatial, temporal and chromatic structure of natural
images it … The values reported in Table 1 are the ratio of two:one cone threshold energies. This …

[HTML][HTML] A computational-observer model of spatial contrast sensitivity: Effects of wave-front-based optics, cone-mosaic structure, and inference engine

NP Cottaris, H Jiang, X Ding, BA Wandell… - Journal of …, 2019 - iovs.arvojournals.org
… the scene specification can be in terms of RGB values and is coupled to display calibration
data… ISETBio cone-mosaic methods compute the number of cone excitation events, which are …

Formulae for generating standard and individual human cone spectral sensitivities

A Stockman, AT Rider - Color Research & Application, 2023 - Wiley Online Library
… observers viewing the same scene may make different color … changed the color matching
data between 390 and 400 nm. … do we convert LMS space into some other RGB space? The …

[PDF][PDF] Does melanopsin help to explain color constancy in natural environments?

PA Barrionuevo, D Cao - International Color Association (AIC) …, 2019 - researchgate.net
… The aim of this work was to assess whether melanopsin excitation could help to achieve a
better color constancy in natural environments. Data from hyperspectral natural images and …

Cone opponent functional domains in primary visual cortex combine signals for color appearance mechanisms

P Li, AK Garg, LA Zhang, MS Rashid… - Nature …, 2022 - nature.com
rate (lower trace in each panel) is inferred from raw fluorescence signal. Red colors in the
STA images indicate ON subregions of spatial … - and S-cone excitation between DKL hue and …

Coding of chromatic spatial contrast by macaque V1 neurons

A De, GD Horwitz - Elife, 2022 - elifesciences.org
… relevant space of cone contrast and the device- specific spacespatial opponency of simple
cells and DO cells in our data set… Neural representation of natural images in visual area V2. …

[HTML][HTML] Impact of cone abundancy ratios and light spectra on emmetropization in chickens

S Gisbert, S Wahl, F Schaeffel - Experimental Eye Research, 2022 - Elsevier
Data were statistically analyzed using the SPSS software … S cone contrast at low spatial
frequencies. Our observation that … response that involves both, cone excitation and cone contrast. …