Artist's colour rendering of HDR scenes in 3D Mondrian colour-constancy experiments

Carinna E. Parraman; John J. McCann; Alessandro Rizzi

doi:10.1117/12.838740

18 January 2010 Artist's colour rendering of HDR scenes in 3D Mondrian colour-constancy experiments

Carinna E. Parraman, John J. McCann, Alessandro Rizzi

Proceedings Volume 7528, Color Imaging XV: Displaying, Processing, Hardcopy, and Applications; 752802 (2010) https://doi.org/10.1117/12.838740
Event: IS&T/SPIE Electronic Imaging, 2010, San Jose, California, United States

Abstract

The presentation provides an update on ongoing research using three-dimensional Colour Mondrians. Two still life arrangements comprising hand-painted coloured blocks of 11 different colours were subjected to two different lighting conditions of a nearly uniform light and directed spotlights. The three-dimensional nature of these test targets adds shadows and multiple reflections, not found in flat Mondrian targets. Working from exactly the same pair of scenes, an author painted them using watercolour inks and paints to recreate both LDR and HDR Mondrians on paper. This provided us with a second set of appearance measurements of both scenes. Here we measured appearances by measuring reflectances of the artist's rendering. Land's Colour Mondrian extended colour constancy from a pixel to a complex scene. Since it used a planar array in uniform illumination, it did not measure the appearances of real life 3-D scenes in non-uniform illumination. The experiments in this paper, by simultaneously studying LDR and HDR renditions of the same array of reflectances, extend Land's Mondrian towards real scenes in non-uniform illumination. The results show that the appearances of many areas in complex scenes do not correlate with reflectance.

Citation Download Citation

Carinna E. Parraman, John J. McCann, and Alessandro Rizzi "Artist's colour rendering of HDR scenes in 3D Mondrian colour-constancy experiments", Proc. SPIE 7528, Color Imaging XV: Displaying, Processing, Hardcopy, and Applications, 752802 (18 January 2010); https://doi.org/10.1117/12.838740

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