SMPTE EG 36 PDF

Existing television interface standards utilize at least two different color channel coding matrices to derive their corresponding analog Y¢ PB¢ PR¢ or digital Y¢ CB¢ CR¢ component color signals. Clearly, it will be necessary to perform transformations between these color component signal sets. This guideline describes the derivation of the transformation matrices and lists example transformations between color component signals adopting ITU-R BT.601 (see note 1) and ITU-R BT.709 (HD-CIF and 1125/60 [see note 2]) luma/chroma equations for both the digital and analog component signal sets. A parametric form of conversion matrix is derived for converting between signal sets with arbitrary source and target luma coefficients.