User:Glennchan

website: glennchan.info

Sandbox for math formulae
http://en.wikipedia.org/wiki/Wikipedia:LaTeX

sRGB


V'_{sRGB} = \begin{cases}

\ {12.92L} ;& 0 \le L \le 0.0031308\\ \\   {1.055L} ^ {\left (   \frac{1}{2.4}   \right )} - 0.055   ;&   0.0031308 < L \le 1 \\ \end{cases}

$$

Rec. 709


L = \begin{cases}

\dfrac {E'_{709}} {4.5} & E'_{709} \leqslant 0.081\\ \\  \dfrac {E'_{709} + 0.099}{1.099}  ^ {\left (  \frac{1}{0.45}   \right )}   &,   0.081 \leqslant E'_{709}  \\ \end{cases}

$$

Other


Luminance = 0.2126 R + 0.7152 G + 0.0722 B

\,\!$$



L = \frac{Max + Min}{2} \,\!$$



V = Max \,\!$$