Colour processing in Runge space

Alfredo Restrepo

doi:10.1117/12.876641

3 February 2011 Colour processing in Runge space

Alfredo Restrepo

Proceedings Volume 7870, Image Processing: Algorithms and Systems IX; 78700P (2011) https://doi.org/10.1117/12.876641
Event: IS&T/SPIE Electronic Imaging, 2011, San Francisco Airport, California, United States

Abstract

We do colour image processing in an RGB-derived spherical space with colour attributes given by hue, colourfulness (as opposed to grayness and somewhat different from saturation) and lightness; we call it Runge space. This spherical space is as intuitive as more common spaces of the type hue-saturation-luminance (called here η,Ε,Λ spaces), yet it avoids the continuity problems of the transformation (R, G,B) → (η,Ε,Λ) that result from normalizing the saturation by the luminance, or of having a geometrically nonhomogeneous space, when the saturation is left un-normalized. We give Matlab routines for the conversions between colour spaces RGB and Runge, and present applications of colour modification in Runge space.

Citation Download Citation

Alfredo Restrepo "Colour processing in Runge space", Proc. SPIE 7870, Image Processing: Algorithms and Systems IX, 78700P (3 February 2011); https://doi.org/10.1117/12.876641

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