Revision as of 16:29, 22 April 2014 edit BarrelProof (talk \| contribs) Extended confirmed users, Page movers, IP block exemptions 123,122 edits Undid revision 605311170 by 20.133.0.13 (talk) Apparent WP:ENGVAR change without an WP:Edit summary ← Previous edit		Revision as of 16:37, 6 July 2014 edit undo 141.2.185.13 (talk) →Tristimulus color space Next edit →
Line 7: [[Image:gamut full.png\|thumb\|right\|3D representation of the human color space.]] ~~One~~Mahdi bhaiOne can picture this space as a region in three-dimensional [[Euclidean space]] if one identifies the ''x'', ''y'', and ''z'' axes with the stimuli for the long-wavelength (''L''), medium-wavelength (''M''), and short-wavelength (''S'') [[Cone cell\|light receptors]]. The origin, (''S'',''M'',''L'') = (0,0,0), corresponds to black. White has no definite position in this diagram; rather it is defined according to the [[color temperature]] or white balance as desired or as available from ambient lighting. The human color space is a horse-shoe-shaped cone such as shown here (see also [[Color_models#CIE_XYZ_color_space\|CIE chromaticity diagram]] below), extending from the origin to, in principle, infinity. In practice, the human color receptors will be saturated or even be damaged at extremely high light intensities, but such behavior is not part of the [[International Commission on Illumination\|CIE]] color space and neither is the changing color perception at low light levels (see: [[Kruithof curve]]). The most saturated colors are located at the outer rim of the region, with brighter colors farther removed from the origin. As far as the responses of the receptors in the eye are concerned, there is no such thing as "brown" or "gray" light. The latter color names refer to orange and white light respectively, with an intensity that is lower than the light from surrounding areas. One can observe this by watching the screen of an overhead projector during a meeting: one sees black lettering on a white background, even though the "black" has in fact not become darker than the white screen on which it is projected before the projector was turned on. The "black" areas have not actually become darker but appear "black" relative to the higher intensity "white" projected onto the screen around it. See also [[Color#Color constancy\|color constancy]].

Color model: Difference between revisions

141.2.185.13 (talk)