Area Dominates Edge in Pointillistic Colour

I-Perception
Jan KoenderinkKarl Gegenfurtner

Abstract

In Pointillism and Divisionism, artists moved from tonal to chromatic palettes, as Impressionism did before them, and relied on what is often called optical mixture instead of stirring paints together. The so-called optical mixture is actually not an optical mixture, but a mental blend, because the texture of the paint marks is used as a means to stress the picture plane. The touches are intended to remain separately visible. These techniques require novel methods of colour description that have to depart from standard colorimetric conventions. We investigate the distinctiveness of transitions between regions as defined through such artistic techniques. We find that the pointillist edges are not primarily defined by luminance contrast but are achieved in almost purely chromatic ways. A very simple rule suffices to predict transition distinctiveness for pairs of cardinal colours (yellow, green, cyan, blue, magenta, and red); it is simply distance along the colour circle or in the RGB cube. Distinctiveness of partition depends mainly on the colours of the regions, not the sharpness of the transition.

References

Nov 1, 1992·Journal of the Optical Society of America. A, Optics and Image Science·K R Gegenfurtner, D C Kiper
Jan 1, 1990·Vision Research·W McIlhaggaA W Snyder
Mar 1, 1989·Journal of the Optical Society of America. A, Optics and Image Science·D T Lindsey, D Y Teller
Sep 1, 1971·Vision Research·P K KaiserR M Boynton
Nov 1, 1983·Journal of the Optical Society of America·C Noorlander, J J Koenderink
Jan 1, 1997·Vision Research·A Li, P Lennie
Jun 1, 2001·Perception·J J KoenderinkJ T Todd
Feb 26, 2005·Perception·Susan F te Pas, Jan J Koenderink
Nov 10, 2005·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Thorsten Hansen, Karl R Gegenfurtner
Jan 1, 1997·IEEE Transactions on Systems, Man, and Cybernetics. Part B, Cybernetics : a Publication of the IEEE Systems, Man, and Cybernetics Society·T V PapathomasA Gorea
Mar 6, 2008·Journal of Vision·Thorsten HansenKarl R Gegenfurtner
Sep 19, 2009·Journal of Vision·Martin GieselKarl R Gegenfurtner
Nov 13, 2015·Perception·Liliana AlbertazziAndrea van Doorn

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Citations

Nov 16, 2018·I-Perception·Jan KoenderinkKarl Gegenfurtner

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