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Limitations of Non Model-Based Recognition Schemes
(1991-05-01)
Different approaches to visual object recognition can be divided into two general classes: model-based vs. non model-based schemes. In this paper we establish some limitation on the class of non model-based recognition ...
On The Uniqueness of Correspondence Under Orthographic and Perspective Projections
(1991-12-01)
The task of shape recovery from a motion sequence requires the establishment of correspondence between image points. The two processes, the matching process and the shape recovery one, are traditionally viewed as independent. ...
The Alignment of Objects With Smooth Surfaces: Error Analysis of the Curvature Method
(1991-11-01)
The recognition of objects with smooth bounding surfaces from their contour images is considerably more complicated than that of objects with sharp edges, since in the former case the set of object points that generates ...
Fast Perceptual Learning in Visual Hyperacuity
(1991-12-01)
In many different spatial discrimination tasks, such as in determining the sign of the offset in a vernier stimulus, the human visual system exhibits hyperacuity-level performance by evaluating spatial relations with the ...
Multi-Scale Vector-Ridge-Detection for Perceptual Organization Without Edges
(1992-12-01)
We present a novel ridge detector that finds ridges on vector fields. It is designed to automatically find the right scale of a ridge even in the presence of noise, multiple steps and narrow valleys. One of the key features ...
Towards Autonomous Motion Vision
(1992-04-01)
Earlier, we introduced a direct method called fixation for the recovery of shape and motion in the general case. The method uses neither feature correspondence nor optical flow. Instead, it directly employs the spatiotemporal ...
Maxwell's Demon, Rectifiers, and the Second Law: Computer Simulation of Smoluchowski's Trapdoor
(1991-09-01)
We have simulated numerically an automated Maxwell's demon inspired by Smoluchowski's ideas of 1912. Two gas chambers of equal area are connected via an opening that is covered by a trapdoor. The trapdoor can open to ...
Review of Artificial Muscle Based on Contractile Polymers
(1991-11-01)
An artificial muscle with strength and speed equal to that of a human muscle may soon be possible. Polymer gels exhibit abrubt volume changes in response to variations in their external conditions -- shrinking or ...
Calculation of Blocking Probabilities in Multistage Interconnection Networks with Redundant Paths
(1991-12-01)
The blocking probability of a network is a common measure of its performance. There exist means of quickly calculating the blocking probabilities of Banyan networks; however, because Banyan networks have no redundant ...
Dynamic Model and Control of an Artificial Muscle Based on Contractile Polymers
(1991-11-01)
A dynamic model and control system of an artificial muscle is presented. The artificial muscle is based on a contractile polymer gel which undergoes abrupt volume changes in response to variations in external conditions. ...