sRGB Companding

\(\text{compand}(v) = \begin{cases} &12.92v&\text{if }v \le 0.0031308\\ &1.055v^{1/2.4}-0.055&\text{otherwise} \end{cases}\)

Inverse sRGB Companding

\(\text{inv_compand}(V) = \begin{cases} &\frac{V}{12.92}&\text{if }V \le 0.04045\\ &\left(\frac{V+0.055}{1.055}\right)^{2.4}&\text{otherwise} \end{cases}\)