YDbDr

From Free net encyclopedia

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. Y is the luminance, and Db and Dr are the red and blue colour differences. These are related to the RGB colour space as follows.

Y  = + 0.299R + 0.587G + 0.114B
Db = + 1.505(B - Y)
   = - 0.450R - 0.883G + 1.333B
Dr = - 1.902(R - Y)
   = - 1.333R + 1.116G + 0.217B

Db and Dr are related to the U and V components of the YUV colour space as follows.

Db = + 3.059U
Dr = - 2.169V

There is also a variety of the PAL broadcasting standard, PAL-N, that uses the YDbDr colour space.