Colour Vision and Chromaticity Scales

Colour-Vision and Colour-Blindness

Colour vision

The immense range of colours that we see belies the relative simplicity of the system underlying colour vision. We see colours because each of the three distinct types of cone photoreceptor in our retinae is sensitive to a different range of wavelengths of light. The L, M and S cones, colloquially called red (R), green (G), and blue (B), are selective for long, middle and short wavelengths, res...

Colour vision

Editorial Colour vision 2006 is an important bicentenary for the Ulster Medical Society. In 806, the Belfast Medical Society was founded and the later formation of the Belfast Clinical and Pathological Society in 853, allowed amalgamation of both societies to form the current Ulster Medical Society in 862. The vision of the early founders of the Belfast Medical Society, was far sighted, and som...

Colour, vision and ergonomics.

This paper is based on a research project - Visual Communication and Inclusive Design-Colour, Legibility and Aged Vision, developed at the Faculty of Architecture of Lisbon. The research has the aim of determining specific design principles to be applied to visual communication design (printed) objects, in order to be easily read and perceived by all. This study target group was composed by a s...

Fast colour image segmentation using a pre-clustered chromaticity-plane

We present an e cient method for segmenting colour images which may be utilised in several robotic vision tasks It categorises pixels according to their percep tual colour by exploiting the chromaticity contained in the signal of a standard colour camera as an in dex into a pre clustered chromaticity plane A tech nique called perceptual colour grouping is introduced to prevent oversegmentation ...