Editing Colorfulness (section)

===In color appearance models===

Another, psychovisually even more accurate, but also more complex method to obtain or specify the saturation is to use a [[color appearance model]] like CIECAM02. Here, the '''chroma''' color appearance parameter might (depending on the color appearance model) be intertwined with e.g. the physical brightness of the illumination or the characteristics of the emitting/reflecting surface, which is more sensible psychovisually.

The CIECAM02 chroma <math>C,</math> for example, is computed from a lightness <math>J</math> in addition to a naively evaluated color magnitude <math>t.</math> In addition, a colorfulness <math>M</math> parameter exists alongside the chroma <math>C.</math> It is defined as <math>M = CF_B^{0.25},</math> where <math>F_L</math> is dependent on the viewing condition.<ref name=ciecam02/>