CS781 - Colour for Computer Graphics - Winter 2009

Lecture 23

Colour and Attention, aka Cognitive Properties of Colour

Reading versus Seeing

Information in two different forms

Which is better?

This is the arguments for visualization

Arrays of letters

The simple experiment

Why do we not need to inspect each letter to see if it is red?

Iconic memory

Short presentation

Introduce different-coloured distractors in random positions

Introduce different-coloured distractors in patterns

Combining colour with locality makes processable units

How are Qualities Incorporated into Objects?

Treisman

Interaction of Colour with Form

Posner

Stroop Effect

Basic

Only one letter coloured


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