NationMaster - Encyclopedia: YDbDr

YDbDr is the colour space used in the SÉCAM colour television broadcasting standard, which is used in France and some countries of the former Eastern Bloc. It is very close to YUV and its related color spaces such as YIQ, YPbPr and YCbCr. Image File history File linksMetadata Download high-resolution version (1600x4780, 1048 KB) Image created by User:(3ucky(3all using Borland Delphi 2006. ... Image File history File linksMetadata Download high-resolution version (1600x4780, 1048 KB) Image created by User:(3ucky(3all using Borland Delphi 2006. ... A color model is an abstract mathematical model describing the way colors can be represented as tuples of numbers, typically as three or four values or color components (e. ... SÃ‰CAM (SÃ©quentiel couleur Ã mÃ©moire, French for color sequential with memory) is an analog color television system first used in France. ... A map of the Eastern Bloc. ... Example of U-V color plane, Y value = 0. ... This article needs to be cleaned up to conform to a higher standard of quality. ... YPbPr (also referred to as YPrPb, PrPbY, and PbPrY) is a color space used in video electronics. ... YCbCr is a family of colour spaces used in video systems. ...

YDbDr is composed of three components - Y, Db and Dr. Y is the luminance, and Db and Dr are the chrominance components (representing the red and blue colour differences). As applied to analog television signals, two different words are used, luminance and luma, meaning two different things. ... Chrominance (chroma for short) comprises the two components of a television signal that encode color information. ...

Formulas

The Y, Db and Dr signals are created from an original RGB (red, green and blue) source. The weighted values of R, G and B are added together to produce a single Y signal, representing the overall brightness, or luminance, of that spot. The Db signal is then created by subtracting the Y from the blue signal of the original RGB, and then scaling; and V by subtracting the Y from the red, and then scaling by a different factor.

These formulae approximate the conversion between the RGB color space and YDbDr. The RGB color model utilizes the additive model in which red, green, and blue light are combined in various ways to create other colors. ...

$begin{bmatrix} Y Db Dr end{bmatrix} = begin{bmatrix} 0.299 & 0.587 & 0.114 -0.450 & -0.883 & 1.333 -1.333 & 1.116 & 0.217 end{bmatrix} begin{bmatrix} R G B end{bmatrix}$

$begin{bmatrix} R G B end{bmatrix} = begin{bmatrix} 1 & 0.000092303716148 & -0.525912630661865 1 & -0.129132898890509 & 0.267899328207599 1 & 0.664679059978955 & -0.000079202543533 end{bmatrix} begin{bmatrix} Y Db Dr end{bmatrix}$

You may note that the Y component of YDbDr is the same as the Y component of YUV. Db and Dr are related to the U and V components of the YUV colour space as follows: Example of U-V color plane, Y value = 0. ...

There is also a variety of the PAL broadcasting standard, PAL-N, that uses the YDbDr colour space. For other uses, see PAL (disambiguation). ... Television encoding systems by nation PAL, short for phase-alternating line, phase alternation by line or phase alternation line, is a colour encoding system used in broadcast television systems in large parts of the world. ...

References

See also

Categories: Color space | Electronics stubs Example of U-V color plane, Y value = 0. ... For other uses, see PAL (disambiguation). ... A color model is an abstract mathematical model describing the way colors can be represented as tuples of numbers, typically as three or four values or color components (e. ... A color model is an abstract mathematical model describing the way colors can be represented as tuples of numbers, typically as three or four values or color components. ... An RGB color space is any additive color space based on the RGB color model. ... The RGB color model is an additive model in which red, green and blue (often used in additive light models) are combined in various ways to reproduce other colors. ... This article or section does not cite its references or sources. ... This article or section does not cite its references or sources. ... The HSL color space, also called HLS or HSI, stands for Hue, Saturation, Lightness (also Luminance or Luminosity) / Intensity. ... Mixture of RYB primary colors RYB is a historical set of subtractive primary colors. ... Without further qualification, Lab color space refers to that of Hunter (Richard S Hunter, JOSA, 38, p 661 (1948)), which is an Adams Chromatic Valance Space. ... Example of U-V color plane, Y value = 0. ... For other uses, see PAL (disambiguation). ... SECAM, also written SÃ‰CAM (SÃ©quentiel couleur Ã mÃ©moire, French for sequential color with memory), is an analog color television system first used in France. ... This article needs to be cleaned up to conform to a higher standard of quality. ... The references in this article would be clearer with a different and/or consistent style of citation, footnoting or external linking. ...