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Semantics of Inheritance and Attributions in the Description System Omega
(1981-08-01)
Omega is a description system for knowledge embedding which incorporates some of the attractive modes of expression in common sense reasoning such as descriptions, inheritance, quantification, negation, attributions ...
Expert Systems: Where Are We? And Where Do We Go from Here?
(1982-06-01)
Work on Expert Systems has received extensive attention recently, prompting growing interest in a range of environments. Much has been made of the basic concept and the rule-based system approach typically used to ...
Spatial Planning: A Configuration Space Approach
(1980-12-01)
This paper presents algorithms for computing constraints on the position of an object due to the presence of obstacles. This problem arises in applications which require choosing how to arrange or move objects among ...
A Local Front End for Remote Editing
(1982-02-01)
The Local Editing Protocol allows a local programmable terminal to execute the most common editing commands on behalf of an extensible text editor on a remote system, thus greatly improving speed of response without ...
CARTOON: A Biologically Motivated Edge Detection Algorithm
(1982-06-01)
Caricatures demonstrate that only a few significant "edges" need to be captured to convey the meaning of a complex pattern of image intensities. The most important of these "edges" are image intensity changes arising ...
The Connection Machine
(1981-09-01)
This paper describes the connection memory, a machine for concurrently manipulating knowledge stored in semantic networks. We need the connection memory because conventional serial computers cannot move through such networks ...
A Computer Implementation of a Theory of Human Stereo Vision
(1980-01-01)
Recently, Marr and Poggio (1979) presented a theory of human stereo vision. An implementation of that theory is presented and consists of five steps: (1) The left and right images are each filtered with masks of four ...
Extra-Retinal Signals Influence Induced Motion: A New Kinetic Illusion
(1980-05-01)
When a moving dot, which is tracked by the eyes and enclosed in a moving framework, suddenly stops while the enclosing framework continues its motion, the dot is seen to describe a curved path. This illusion can be ...
Inferring Shape from Motion Fields
(1980-12-01)
The human visual system has the ability o utilize motion information to infer the shapes of surfaces. More specifically, we are able to derive descriptions of rigidly rotating smooth surfaces entirely from the orthographic ...
Shape from Regular Patterns: An Example of Constraint Propagation in Vision
(1980-03-01)
An algorithm is proposed for obtaining local surface orientation from the apparent distortion of surface patterns in an image. A spherical projection is used for imaging. A mapping is defined from points on this image ...