Fig. 6: Evaluation of single-kernel and three-layer network models for three known perceptual effects.
From: Human gloss perception reproduced by tiny neural networks

The dark-blue circles and blue diamonds show model responses for the one-layer model and three-layer models, respectively. a, Effect of rotating specular structure. The top image shows the original image where no manipulation was applied. The rotation 0 indicates the original image. b, Effect of horizontally translating specular reflection. The translation 0 indicates the original image. c, Effect of changing surface roughness level. The surface roughness 0.05 indicates the original image. d, Effect of changing surface contrast level. The surface roughness 100% indicates the original image. Contrast was manipulated by changing Pellacini’s c.