zaterdag 19 februari 2011

Can we track holes?

 
 

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Publication year: 2011
Source: Vision Research, In Press, Accepted Manuscript, Available online 18 February 2011
Todd S., Horowitz , Yoana, Kuzmova
The evidence is mixed as to whether the visual system treats objects and holes differently. We used a multiple object tracking task to test the hypothesis that figural objects are easier to track than holes. Observers tracked four of eight items (holes or objects). We used an adaptive algorithm to estimate the speed allowing 75% tracking accuracy. In Experiments 1-5, the distinction between holes and figures was accomplished by pictorial cues, while red-cyan anaglyphs were used to provide the illusion of depth in Experiment 6. We variously used Gaussian pixel noise, photographic scenes, or synthetic textures as backgrounds. Tracking was...
 Research highlights: ► Multiple object tracking as a way to measure how the visual system parses a scene. ► Tracking was more difficult with a complex background, than a blank background. ► Tracking was easier when disks carried fixed, unique markings. ► Tracking holes was no more difficult than tracking figures. ► Suggests that proto-objects can be regions which lack an image-based border.

 
 

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