PURPOSE The purpose of this analysis was to determine whether dynamic measures of vision, such as dynamic acuity and motion threshold, are independently associated with self-reported difficulty in activities involving vision. METHODS Data were used from the third round of the Salisbury Eye Evaluation (n = 1198), a longitudinal, population-based study of older adults. Multiple measures of visu...

The apparent motion reveals what in an image that human vision detects first. Chen's assumption that early stage vision can percept global topology is proved incorrect in theory and experiments. Based upon psychological studies on human vision, a new theory, the blurred matching, was introduced into visual computation which well fits the results of all experiments about apparent motion, Chen's ...

This paper describes a new framework for a planning of vision and motion for a mobile robot. For a planning in a real world, the uncertainty and the cost of visual recognition are important issues. A robot has to consider a tradeoff between the cost of visual recognition and the effect of information obtained by recognition. A problem is to generate a sequence of vision and motion operations ba...

A robot vehicle moving under visual guidance needs to compute approximate geometry of obstacles in its environment. It is unreasonable to assume that egomotion is known to the sort of precision that is available for a camera mounted on a high quality robot arm. Generally a nominal estimate for egomotion is available. One possibility is to refine this estimate using optic flow data (Harris, 1987...

Afterimage-like effects modulate the responses of fly wide-field motion-sensitive cells following adaptation to stationary or slowly moving patterns. The origin of these afterimages is unclear. They have been interpreted as either the result of adaptation in the early visual system or as a direct consequence of the correlation scheme of motion detection. Using a combination of intracellular rec...