Colour contrast detection in chromaticity diagram: A new computerized colour vision test

Colour discrimination is one of the most important means for object detection and recognition. Acquired or congenital colour blindness may become a major cause of troubles in everyday life tasks. Digital technologies already offer some methods to overcome this impairment. However, to be efficient, these methods have to be based on a careful matching with each user's colour vision. Although the traditional Ishihara and Farnsworth tests are relatively easy to use, computerized tests seem to simplify administration and recording of colour vision tests. This work presents a new computerized colour vision test, aiming to give access to subject's detection thresholds for colour in the whole gamut of a given display device, and the preliminary works for its validation. Subjects with normal colour vision and subjects with congenital anomalous trichromacy underwent this test, and first results indicate a fairly good sensibility.