A model of colour appearance based on efficient coding of natural images
Fig 5
The SBL model can account for colour appearance in complex naturalistic images.
(a) shows the input image (similar to the Lotto cube [81]) where the blue squares on the yellow-tinted side (right) and the yellow squares on the blue-tinted side (left) are physically the same grey (colours are shown in the squares at the top of the image). The SBL model (b) correctly predicts that the squares under both tinting regimes appear yellow and blue, rather than grey. The SBL model also predicts the powerful simultaneous contrast (or shadow) illusion present in this image whereby; the central tiles on top of the cube appear to be darker than the central tiles on the shaded side of the cube (colours shown in squares on the far left and for right hand sides).