REDUNDANT CODING IN VISUAL SEARCH DISPLAYS: EFFECTS OF SHAPE AND COLOUR

PDF

Authors
  1. Bauer, B.
  2. McFadden, S.M.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
Subjects sought a unique target shape in a display of distractor shapes under three colour coding conditions. In the no colour coding condition (NCC) all shapes shared the same colour. In the two colour-coded conditions, the target was uniquely and redundantly colour coded with a colour whose CIE xy chromaticity coordinates were linearly separable (LS) or were not linearly separable (NLS) from the set of distractor chromaticity coordinates. Performance was optimal under LS coding, was reduced under NLS coding and was least efficient in the NCC condition. We discuss the implications of these results for refining colour selection algorithms and for colour coding in situations where the gamut of available colours is limited. In a secondary set of analyses, we note large performance differences as a function of target shape.
Keywords
Shape coding;Colour discrimination;Linear separability;Visual search
Report Number
DCIEM-97-R-04 —
Date of publication
01 Feb 1997
Number of Pages
28
DSTKIM No
97-01978
CANDIS No
502150
Format(s):
Hardcopy;Document Image stored on Optical Disk

Permanent link

Document 1 of 1

Date modified: