Skin of color underrepresented in AI programs in dermatology

Challenges relating to artificial intelligence (AI) in dermatology and its application to skin of color (SOC) are partly due to underrepresentation of SOC in datasets, according to research published online March 6 in the ...

Obstetrics & gynaecology

Telehealth makes timely abortions possible for many, research shows

Access to telehealth abortion care can determine whether a person can obtain an abortion in the United States. For young people and those living on low incomes, telehealth makes a critical difference in getting timely abortion ...

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Color or colour (see spelling differences) is the visual perceptual property corresponding in humans to the categories called red, green, blue and others. Color derives from the spectrum of light (distribution of light power versus wavelength) interacting in the eye with the spectral sensitivities of the light receptors. Color categories and physical specifications of color are also associated with objects, materials, light sources, etc., based on their physical properties such as light absorption, reflection, or emission spectra. By defining a color space, colors can be identified numerically by their coordinates.

Because perception of color stems from the varying spectral sensitivity of different types of cone cells in the retina to different parts of the spectrum, colors may be defined and quantified by the degree to which they stimulate these cells. These physical or physiological quantifications of color, however, do not fully explain the psychophysical perception of color appearance.

The science of color is sometimes called chromatics, colorimetry, or simply color science. It includes the perception of color by the human eye and brain, the origin of color in materials, color theory in art, and the physics of electromagnetic radiation in the visible range (that is, what we commonly refer to simply as light).

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