Projects per year
Abstract
The modulation of orientation around radial frequency (RF) patterns and RF textures is globally processed in both cases. This psychophysical study investigates whether the combination-a textured RF path obtained by applying an RF texture to an RF contour-is processed like a texture or a contour when making judgements about shape. Unlike RF textures, the impression of a closed flow was not required for global integration of textured RF paths, suggesting that these paths were processed as second-order, or contrast-defined contours. Luminance-defined (LD) RF paths were shown to globally integrate but with thresholds approximately half of those for the proposed second-order textured paths. The next experiment investigated whether this benefit was due to LD stimuli possessing double the amount of information (first- and second-order information). A mixed three-part contour composed of two different second-order texture components and an LD component was then employed to determine how the different cues combined. The mixed path thresholds matched predictions derived from a linear combination of firstand second-order cues. The conclusion is that the shape of isolated contours is processed using both first- and second-order information equally and that the contribution of texture is to carry additional secondorder signal.
Original language | English |
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Article number | 9 |
Pages (from-to) | 1-14 |
Journal | Journal of Vision |
Volume | 16 |
Issue number | 11 |
DOIs | |
Publication status | Published - Sept 2016 |
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Dive into the research topics of 'In unison: First- and second-order information combine for integration of shape information'. Together they form a unique fingerprint.Projects
- 3 Finished
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Form & Motion Interactions in Human Motion Perception
Badcock, D. (Investigator 01) & Edwards , M. (Investigator 02)
ARC Australian Research Council
1/01/11 → 30/06/16
Project: Research
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Human Visual Determination of Shape
Badcock, D. (Investigator 01)
ARC Australian Research Council
1/01/10 → 31/12/13
Project: Research
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DP0666206 - Characterising and Linking Intermediate-Level Processing of Pattern, Motion and Position in Human Vision
Badcock, D. (Chief Investigator)
1/01/06 → 31/12/09
Project: Research