2003 volume 32(1) pages 29 – 39
doi:10.1068/p3278

Cite as:
Bull N J, Hunter M, Finlay D C, 2003, "Cue gradient and cue density interact in the detection and recognition of objects defined by motion, contrast, or texture" Perception 32(1) 29 – 39
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Cue gradient and cue density interact in the detection and recognition of objects defined by motion, contrast, or texture

Neva J Bull, Mick Hunter, David C Finlay

Received 12 September 2001, in revised form 12 August 2002; published online 21 January 2003

Abstract. The human visual system is able to extract an object from its surrounding using a number of cues. These include foreground/background gradients in disparity, motion, texture, colour, and luminance. We have investigated normal subjects' ability to detect objects defined by either motion, texture, or luminance gradients. The effects of manipulating cue density and cue foreground/background gradient on both detection and recognition accuracy were also investigated. The results demonstrate a simple additive relationship between cue density and cue gradient across forms defined by motion, luminance, and texture. The results are interpreted as evidence for the notion that form parsing is achieved via a similar algorithm across anatomically distinct processing streams.

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