Results 21 to 30 of about 1,094,287 (239)

Two Classes of Color Constancy

open access: yesJournal of the Illuminating Engineering Institute of Japan, 1997
If a mere apparent color (apparent-color) from an object surface is equal to a color perception as an attribute of the same object surface (surface-color), this condition should be called “perfect color constancy.” If not, the condition should be called “partial color constancy.” We looked into the distinction between these two classes of color ...
KURIKI, Ichiro, UCHIKAWA, Keiji
openaire   +3 more sources

Target recognitions in multiple camera CCTV using colour constancy [PDF]

open access: yes, 2013
People tracking using colour feature in crowded scene through CCTV network have been a popular and at the same time a very difficult topic in computer vision.
Merfort, Christian   +8 more
core   +1 more source

Fast Fourier Color Constancy [PDF]

open access: yes2017 IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2017
We present Fast Fourier Color Constancy (FFCC), a color constancy algorithm which solves illuminant estimation by reducing it to a spatial localization task on a torus. By operating in the frequency domain, FFCC produces lower error rates than the previous state-of-the-art by 13-20% while being 250-3000 times faster.
BARRON JONATHAN, TSAI YUN-TA
openaire   +7 more sources

Color Constancy via Multi-Scale Region-Weighed Network Guided by Semantics

open access: yesFrontiers in Neurorobotics, 2022
In obtaining color constancy, estimating the illumination of a scene is the most important task. However, due to unknown light sources and the influence of the external imaging environment, the estimated illumination is prone to color ambiguity.
Fei Wang   +4 more
doaj   +1 more source

Influence of Surrounding Colors in the Illuminant-Color Mode on Color Constancy

open access: yesi-Perception, 2011
On color constancy, we showed that brighter surrounding colors had greater influence than dim colors (Uchikawa, Kitazawa, MacLeod, Fukuda, 2010 APCV).
Kazuho Fukuda   +2 more
doaj   +1 more source

Deep Spatio-Temporal Illuminant Estimation Under Time-Varying AC Lights

open access: yesIEEE Access, 2022
Artificial lights, which are powered by alternating current (AC), are ubiquitous nowadays. The intensity of these lights fluctuates dynamically depending on the AC power.
Jun-Sang Yoo   +4 more
doaj   +1 more source

Color constancy using CNNs [PDF]

open access: yes2015 IEEE Conference on Computer Vision and Pattern Recognition Workshops (CVPRW), 2015
In this work we describe a Convolutional Neural Network (CNN) to accurately predict the scene illumination. Taking image patches as input, the CNN works in the spatial domain without using hand-crafted features that are employed by most previous methods.
Simone Bianco 0001   +2 more
openaire   +5 more sources

Color Constancy by Deep Learning [PDF]

open access: yes, 2015
Computational color constancy aims to estimate the color of the light source. The performance of many vision tasks, such as object detection and scene understanding, may benefit from color constancy by estimating the correct object colors.
Tam, G.K.L.   +6 more
core   +2 more sources

Perceptually Optimized Enhancement of Contrast and Color in Images

open access: yesIEEE Access, 2018
In this paper, we propose perceptually optimized enhancement of contrast and color in images using just-noticeable-difference (JND) transform and color constancy.
Long Yu, Haonan Su, Cheolkon Jung
doaj   +1 more source

Orthogonal relations and color constancy in dichromatic colorblindness. [PDF]

open access: yesPLoS ONE, 2014
This paper employs uniform color space to analyze relations in dichromacy (protanopia, deuteranopia, tritanopia). Fifty percent or less of dichromats represent the classical reduction form of trichromacy, where one of three cones is inoperative but ...
Ralph W Pridmore
doaj   +1 more source

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