Ross O'Dwyer: test_pregamma_1_mantiuk_contrast_mapping_0.1_saturation_factor_0.8
Ross O'Dwyer: tree_pregamma_1_mantiuk_contrast_mapping_0.1_saturation_factor_0.8
Ross O'Dwyer: tree2_pregamma_1_mantiuk_contrast_mapping_0.1_saturation_factor_0.8