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Now showing items 51-59 of 59
Smoothed Local Symmetries and Their Implementation
(1984-02-01)
We introduce a novel representation of two-dimensional shape that we call smoothed local symmetries (SLS). Smoothed local symmetries represent both the bounding contour of a shape fragment and the region that it occupies. ...
Zero-Crossings on Lines of Curvature
(1984-12-01)
We investigate the relations between the structure of the image and events in the geometry of the underlying surface. We introduce some elementary differential geometry and use it to define a coordinate system on the ...
PP: A LISP Pretty Printing System
(1984-12-01)
The PP system provides an efficient implementation of the Common Lisp pretty printing function PPRINT. In addition, PP goes beyond ordinary pretty printers by providing mechanisms which allow the user to control the ...
Qualitative Process Theory
(1984-07-01)
Objects move, collide, flow, bend, heat up, cool down, stretch, compress and boil. These and other things that cause changes in objects over time are intuitively characterized as processes. To understand common sense ...
Qualitative Analysis of MOS Circuits
(1984-07-01)
With the push towards sub-micron technology, transistor models have become increasingly complex. The number of components in integrated circuits has forced designer's efforts and skills towards higher levels of design. ...
Tense, Aspect and the Cognitive Representation of Time
(1984-12-01)
This paper explores the relationships between a computation theory of temporal representation (as developed by James Allen) and a formal linguistic theory of tense (as developed by Norbert Hornstein) and aspect. It ...
Vision by Man and Machine
(1984-03-01)
The development of increasingly sophisticated and powerful computers in the last few decades has frequently stimulated comparisons between them and the human brain. Such comparisons will become more earnest as computers ...
An Algorithm for Parsing Flow Graphs
(1984-03-01)
This report describes research about flow graphs - labeled, directed, acyclic graphs which abstract representations used in a variety of Artificial Intelligence applications. Flow graphs may be derived from flow ...
FLOW : a programming environment using diagrams
(1984)
A graphical language is developed as a generalization of the structured flowcharts proposed by Nessi and Shneiderman. This language can be used in the specification of procedures, procedure interfaces and data structures. ...