Occlusion detection is a fundamental and important problem in optical sensor inspection planning. Many viewplanning algorithms have been developed for optical inspection, however, few of them explicitly develop practical algorithms for occlusion detection. This paper presents a hierarchical space partition approach that divides both positional and surface normal space of an object for fast occl...

We have developed a model of reversible cerebral ischemia in a high-level nonhuman primate. By using endovascular techniques, the posterior cerebral artery is permanently occluded with coils, and the ipsilateral middle cerebral artery is temporarily occluded with a balloon. The balloon can be deflated and/or removed to reestablish flow at precise time intervals. Functional imaging of the brain ...

Severe architectural and timing constraints within the primate visual system support the conjecture that the early phase of object recognition in the brain is based on a feedforward feature-extraction hierarchy. To assess the plausibility of this conjecture in an engineering context, a difficult three-dimensional object recognition domain was developed to challenge a pure feedforward, receptive...

Neuropsychological studies of patients with lesions of right frontal (premotor) or posterior parietal cortex often show severe impairments of attentive sensorimotor behavior. Such patients frequently manifest symptoms like hemispatial neglect or extinction. Interestingly, these behavioral deficits occur across different sensory modalities and are often organized in head- or body-centered coordi...

Space and value in the primate amygdala and basal forebrain Christopher James Peck

A method for incorporating intensity edge information into the recovery of occlusion regions using a pixel-based stereo algorithm is presented. We review the construction of disparity-space images and their use to solve the stereo occlusion problem. We show the impact of intensity edges on the disparity space images, and extend our stereo technique to use information about intensity discontinui...

The power stroke of mastication has been traditionally divided into two parts, one which precedes centric occlusion, and the other which follows it-"Phase I" and "Phase II," respectively. Recent studies of primate mastication have called into question the role of Phase II in food processing, as they have found little muscle activity or accompanying bone strain following centric occlusion. That ...

The primate brain successfully recognizes objects, even when they are partially occluded. To begin to elucidate the neural substrates of this perceptual capacity, we measured the responses of shape-selective neurons in visual area V4 while monkeys discriminated pairs of shapes under varying degrees of occlusion. We found that neuronal shape selectivity always decreased with increasing occlusion...