Publication

Opponent Color Space Motivated by Retinal Processing

Sabine Süsstrunk
2002
Conference Papers

Abstract

We introduce a new opponent color space, which aims to mimic the color processing in the primate retina. Recent data from physiology and morphology are used to determine the model and its parameters. The input signal in LMS representation is first nonlinearly transformed by a response saturation stage. Then a linear, spatially extended transformation computes the opponent representation. In contrast to other opponent color spaces, our model does not have a luminance component. Our three components are blue-yellow, red-green, and green-red. It is the spatial extension that allows us to distinguish between the last two. Furthermore, we show that we can reverse the transformation and obtain a LMS representation from the opponent encoding.

Official source

https://infoscience.epfl.ch/entities/publication/022a6672-86de-41db-8683-74f7ab24cc93

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Sabine Süsstrunk
2002
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/022a6672-86de-41db-8683-74f7ab24cc93

About this result

Related concepts (32)

Opponent process

The opponent process is a color theory that states that the human visual system interprets information about color by processing signals from photoreceptor cells in an antagonistic manner. The opponent-process theory suggests that there are three opponent channels, each comprising an opposing color pair: red versus green, blue versus yellow, and black versus white (luminance). The theory was first proposed in 1892 by the German physiologist Ewald Hering. Complementary colors When staring at a bright color for a while (e.

Primary color

A set of primary colors or primary colours (see spelling differences) consists of colorants or colored lights that can be mixed in varying amounts to produce a gamut of colors. This is the essential method used to create the perception of a broad range of colors in, e.g., electronic displays, color printing, and paintings. Perceptions associated with a given combination of primary colors can be predicted by an appropriate mixing model (e.g., additive, subtractive) that reflects the physics of how light interacts with physical media, and ultimately the retina.

Retina

The retina (from rete "net"; : retinae or retinas) is the innermost, light-sensitive layer of tissue of the eye of most vertebrates and some molluscs. The optics of the eye create a focused two-dimensional image of the visual world on the retina, which then processes that image within the retina and sends nerve impulses along the optic nerve to the visual cortex to create visual perception. The retina serves a function which is in many ways analogous to that of the film or in a camera.

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