CS781 - Colour for Computer Graphics - Winter 2009

Lecture 24

Colour and Attention, aka Cognitive Properties of Colour

Colour does two things

  1. segregates (possible?) perceptual objects
  2. directs attention

Two kinds of effects

  1. Find a predetermined colour
  2. Find a different colour

Interaction of Colour with Form

Posner

Idea of redundancy

Results

Colour relationships prime form judgements, but not vice versa.

Interpretation

Either

The ability to segregate input based on shape seems to argue for the former

How Fast is Colour Processing?

Stroop Effect

Basic

Only one letter coloured


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