منابع مشابه
Separating color from color contrast.
Visual objects can be described by their color and by their color contrast. For example, a red disk in front of a white background appears "red with high color contrast," whereas a red disk in front of a slightly less-saturated red background will appear "red with low color contrast." This paper examines the visual response to color contrast in a cone-based color space. The stimulus consists of...
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The analysis of colored surface textures is a challenging research problem in computer vision. Current approaches to this task can be roughly divided into two categories: methods that process color and texture information separately and those that utilize multispectral texture descriptions. Motivated by recent psychophysical findings, we find the former approach quite auspicious. We propose the...
متن کاملRemoving Artefacts from Color and Contrast Modification
This work is concerned with the modification of the gray level or color distribution of digital images. A common drawback of classical methods aiming at such modifications is the revealing of artefacts or the attenuation of details and textures. In this work we propose a generic filtering method enabling, given the original image and the radiometrically corrected one, to suppress artefacts whil...
متن کاملColor contrast induction.
We report the results of psychophysical experiments on the intensive, spatial, temporal and chromatic properties of color contrast induction. Modulating the contrast of an annulus induces an apparent modulation of the color contrast of a central disk, at isoluminance. Results of varying the size of the annulus suggest that mechanisms which control contrast gain are spatially localized. Results ...
متن کاملSeparating Illumination and Surface Spectral from Multiple Color Signals
A number of methods have been proposed to separate a color signal into its components: illumination spectral power distribution and surface spectral reflectance. Most of these methods usually use a minimization technique from solely a single color signal, which works in theoretical framework but is not effective for real data. The reason is it lacks the constraints necessary to make the iterati...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2008
ISSN: 1534-7362
DOI: 10.1167/8.1.8