Neural Comput - Tangent bundle curve completion with locally connected parallel networks.

Tópicos

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{ first(2504) two(1366) second(1323) }
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{ detect(2391) sensit(1101) algorithm(908) }

Resumo

We propose a theory for cortical representation and computation of visually completed curves that are generated by the visual system to fill in missing visual information (e.g., due to occlusions). Recent computational theories and physiological evidence suggest that although such curves do not correspond to explicit image evidence along their length, their construction emerges from corresponding activation patterns of orientation-selective cells in the primary visual cortex. Previous theoretical work modeled these patterns as least energetic 3D curves in the mathematical continuous space R2 ? S1, which abstracts the mammalian striate cortex. Here we discuss the biological plausibility of this theory and present a neural architecture that implements it with locally connected parallel networks. Part of this contribution is also a first attempt to bridge the physiological literature on curve completion with the shape problem and a shape theory. We present completion simulations of our model in natural and synthetic scenes and discuss various observations and predictions that emerge from this theory in the context of curve completion.

Resumo Limpo

propos theori cortic represent comput visual complet curv generat visual system fill miss visual inform eg due occlus recent comput theori physiolog evid suggest although curv correspond explicit imag evid along length construct emerg correspond activ pattern orientationselect cell primari visual cortex previous theoret work model pattern least energet d curv mathemat continu space r s abstract mammalian striat cortex discuss biolog plausibl theori present neural architectur implement local connect parallel network part contribut also first attempt bridg physiolog literatur curv complet shape problem shape theori present complet simul model natur synthet scene discuss various observ predict emerg theori context curv complet

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