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The 4-bit RGBI palette is similar to the 3-bit RGB palette but adds one bit for intensity. This allows each of the colors of the 3-bit palette to have a dark and bright variant, potentially giving a total of 2 3 ×2 = 16 colors. However, some implementations had only 15 effective colors due to the "dark" and "bright" variations of black being ...
RGBI interface — Red, Green, Blue, Intensity; a color format, most commonly used in an RGBI cathode ray tube monitor interface Topics referred to by the same term This disambiguation page lists articles associated with the title RGBI .
The 4-bit RGBI palette is similar to the 3-bit RGB palette but adds one bit for intensity. This allows each of the colors of the 3-bit palette to have a variant (on most machines dark or bright, but saturated or unsaturated was also possible) potentially giving a total of 2 3 ×2 == 16 colors. Some implementations had only 15 effective colors ...
This "RGBI with tweaked brown" palette was retained as the default palette of later PC graphics standards such as EGA and VGA, which can select colors from much larger gamuts, but default to these until reprogrammed. Later video cards/monitors in CGA emulation modes would approximate the colors with the following formula:
This article is a list of the color palettes for notable computer graphics, terminals and video game console hardware.. Only a sample and the palette's name are given here. More specific articles are linked from the name of each palette, for the test charts, samples, simulated images, and further technical details (including referenc
The example palette is a 4-bit RGBI palette, but it is not the CGA 4-bit palette. See Color Graphics Adaptor. The bright part of the palette are not pure colors and also instead of light yellow a brown color is used. —Preceding unsigned comment added by 85.116.207.246 09:45, 22 September 2008 (UTC)
RGBE allows pixels to have the dynamic range and precision of floating-point values in a relatively compact data structure (32 bits per pixel) - often when images are generated from light simulations, the range of per-pixel color intensity values are much greater than will nicely fit into the standard 0..255 (8-bit) range of standard 24-bit image formats.
CGA, MDA, EGA connector ()The historical connector used by MDA, EGA and CGA graphic cards is a female nine-pin D-subminiature ().The signal standard and pinout are backward-compatible with CGA, allowing EGA monitors to be used on CGA cards and vice versa.