Testing for Colour Vision

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...

A Standardized Colour-vision Testing Lantern (ii) Transport Type.

THE purpbse of this note is to describe a modification of the standardized colour vision testing lantern designed by the present writer (Martin, 1939), which should render it specially suitable for use by. transport undertakings. Experience has shown, however, that the mariner's test was a very satisfactory one in itself. Therefore the modifications are supplementary, and the marine form of the...

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 for Robot Navigation

This paper presents two computer vision algorithms which address complementary aspects of the mobile robot navigation problem. The rst is a beacon system which allows for reliable and accurate robot localization, the second is a novel simple, but highly eeective, algorithm for colour based classiication which is used for reactive control. Two reactive control algorithms are built using the clas...