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Now showing items 11-20 of 62
Finding Junctions Using the Image Gradient
(1991-12-01)
Junctions are the intersection points of three or more intensity surfaces in an image. An analysis of zero crossings and the gradient near junctions demonstrates that gradient-based edge detection schemes fragment edges ...
Imagination and Situated Cognition
(1991-02-01)
A subsumption-based mobile robot is extended to perform cognitive tasks. Following directions, the robot navigates directly to previously unexplored goals. This robot exploits a novel architecture based on the idea ...
Synthesis of Visual Modules from Examples: Learning Hyperacuity
(1991-01-01)
Networks that solve specific visual tasks, such as the evaluation of spatial relations with hyperacuity precision, can be eastily synthesized from a small set of examples. This may have significant implications for the ...
A Parallel Crossbar Routing Chip for a Shared Memory Multiprocessor
(1991-03-01)
This thesis describes the design and implementation of an integrated circuit and associated packaging to be used as the building block for the data routing network of a large scale shared memory multiprocessor system. ...
Reliable Interconnection Networks for Parallel Computers
(1991-10-01)
This technical report describes a new protocol, the Unique Token Protocol, for reliable message communication. This protocol eliminates the need for end-to-end acknowledgments and minimizes the communication effort ...
Temporal Surface Reconstruction
(1991-05-01)
This thesis investigates the problem of estimating the three-dimensional structure of a scene from a sequence of images. Structure information is recovered from images continuously using shading, motion or other visual ...
Multiple Mode Vibration Suppression in Controlled Flexible Systems
(1991-05-01)
Prior research has led to the development of input command shapers that can reduce residual vibration in single- or multiple-mode flexible systems. We present a method for the development of multiple-mode shapers which ...
MIT Scheme Reference Manual
(1991-01-01)
MIT Scheme is an implementation of the Scheme programming language that runs on many popular workstations. The MIT Scheme Reference Manual describes the special forms, procedures, and datatypes provided by the ...
Tractable Inference Relations
(1991-12-01)
We consider the concept of local sets of inference rules. Locality is a syntactic condition on rule sets which guarantees that the inference relation defined by those rules is polynomial time decidable. Unfortunately, ...
Boltzmannn Weighted Selection Improves Performance of Genetic Algorithms
(1991-12-01)
Modifiable Boltzmann selective pressure is investigated as a tool to control variability in optimizations using genetic algorithms. An implementation of variable selective pressure, modeled after the use of temperature ...