A closed curve is much more than an incomplete one: effect of closure in figure-ground segmentation.
AUTOR(ES)
Kovács, I
RESUMO
Detection of fragmented closed contours against a cluttered background occurs much beyond the local coherence distance (maximal separation between segments) of nonclosed contours. This implies that the extent of interaction between locally connected detectors is boosted according to the global stimulus structure. We further show that detection of a target probe is facilitated when the probe is positioned inside a closed circle. To explain the striking contour segregation ability found here, and performance enhancement inside closed boundaries, we propose the existence of a synergetic process in early vision.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=47168Documentos Relacionados
- Figure-ground activity in primary visual cortex is suppressed by anesthesia
- Modeling perceptual grouping and figure-ground segregation by means of active reentrant connections.
- Depression in Epilepsy Is Much More Than a Reactive Process
- Is there an advantage in scoring early embryos on more than one day?
- A new journal—in more than one way