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The nature of colour contrast

The usual definition of the contrast Ct of a stimulus is given by the Michaelson contrast equation [Pg.71]

Firstly, it can be seen that the sensitivity of the luminance channel is much higher than the sensitivities of the two iso-luntinant opponent chaimels. Secondly, the upper spatial frequency to which the channel still remains [Pg.72]


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Colour contrast

Colourings: natural

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