Color constancy supports cross-illumination color selection
نویسندگان
چکیده
منابع مشابه
Color constancy supports cross-illumination color selection.
We rely on color to select objects as the targets of our actions (e.g., the freshest fish, the ripest fruit). To be useful for selection, color must provide accurate guidance about object identity across changes in illumination. Although the visual system partially stabilizes object color appearance across illumination changes, how such color constancy supports object selection is not understoo...
متن کاملColor constancy: surface color from changing illumination
Received September 5, 1991; revised manuscript received October 30, 1991; accepted November 13, 1991 Viewing the lights reflected by a set of three or more surfaces, a trichromatic visual system can recover three color-constant descriptors of reflectance per surface if the color of the surfaces' illuminant changes. This holds true for a broad range of models that relate photoreceptor, surface, ...
متن کاملColor constancy from blackbody illumination.
We present a theoretical analysis of what we believe to be a new color constancy method that inputs two chromaticities of an identical surface taken under two blackbody illuminations. By using the Planck formula for modeling spectra of outdoor illumination and by assuming that a narrowband camera sensitivity function is sufficiently narrow, surface colors can be estimated mathematically. Experi...
متن کاملColor Constancy from Illumination Changes
Elimination of illumination color in color images is essential for various fields in computer vision. Many methods have been proposed to solve it, however there are few methods employing varying illumination as a constraint. We found Finlayson et al. ’s method [10] applicable for natural images, and extended it by making the reference illumination variable. To evaluate our method, we have condu...
متن کاملColor Constancy for Scenes with Varying Illumination (Color Constancy with Varying Illumination)
We present an algorithm which uses information from both surface reflectance and illumination variation to solve for color constancy. Most color constancy algorithms assume that the illumination across a scene is constant, but this is very often not valid for real images. The method presented in this work identifies and removes the illumination variation, and in addition uses the variation to c...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2015
ISSN: 1534-7362
DOI: 10.1167/15.6.13