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 …

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 …

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 …

[HTML][HTML] Colour expectations across illumination changes

H Karimipour, C Witzel - Vision Research, 2024 - Elsevier
… a spatial resolution of 1920 × 1200 pixels, and a refresh rate of … undermined constant
cone-excitation ratios by manipulating … spectra for the rest of the scene. Such viewing conditions …

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. …

Representation of cone-opponent color space in macaque early visual cortices

X Du, X Jiang, I Kuriki, T Takahata, T Zhou… - Frontiers in …, 2022 - frontiersin.org
… Under 630 nm illumination, images of light reflectance from a … calculated by these statistics
in each pixel (statistical map). For … To remove high-spatial-frequency noise from the statistical

An image reconstruction framework for characterizing initial visual encoding

LQ Zhang, NP Cottaris, DH Brainard - Elife, 2022 - elifesciences.org
… description of the statistical structure of natural images. Given … images occupy only a small
manifold within the space of all … To reconstruct the image ˆx given a pattern of cone excitation m…