Probably true, and analogous to gamma correction (https://en.wikipedia.org/wiki/Gamma_correction https://en.wikipedia.org/wiki/Gamma_correction) although they d

Probably true, and analogous to gamma correction (https://en.wikipedia.org/wiki/Gamma_correction https://en.wikipedia.org/wiki/Gamma_correction) although they don't specifically say whether the range-compressing transformation that they are using is a power law.