auto ButteraugliDiffmap(const jxl::Image3F& rgb0, const jxl::Image3F& rgb1, double hf_asymmetry, double xmul, jxl::ImageF& diffmap) -> bool

auto ButteraugliDiffmap(const jxl::Image3F& rgb0, const jxl::Image3F& rgb1, const ButteraugliParams& params, jxl::ImageF& diffmap) -> bool