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Now showing items 51-60 of 60
Using Enhanced Spherical Images for Object Representation
(1979-05-01)
The processes involved in vision, manipulation, and spatial reasoning depend greatly on the particular representation of three-dimensional objects used. A novel representation, based on concepts of differential geometry, ...
SEQUINS and QUILLS: Representations for Surface Topography
(1979-05-01)
The shape of a continuous surface can be represented by a collection of surface normals. These normals are like a porcupine's quills. Equivalently, one can use the surface patches on which these normals rest. These ...
Creation of Computer Animation from Story Descriptions
(1979-08-01)
This report describes a computer system that creates simple computer animation in response to high-level, vague, and incomplete descriptions of films. It makes its films by collecting and evaluating suggestions from ...
Compliance and Force Control for Computer Controlled Manipulators
(1979-04-01)
Compliant motion occurs when the manipulator position is constrained by the task geometry. Compliant motion may be produced either by a passive mechanical compliance built in to the manipulator, or by an active ...
Specifying and Proving Properties of Guardians for Distributed Systems
(MIT Artificial Intelligence Laboratory, 1979-05)
In a distributed system where many processors are connected by a network and communicate using message passing, many users can be allowed to access the same facilities. A public utility is usually an expensive or limited ...
Stepping Motor Control System
(MIT Artificial Intelligence Laboratory, 1979-02)
This paper describes a hardware system designed to facilitate position and velocity control of a group of eight stepping motors using a PDP-11. The system includes motor driver cards and other interface cards in addition ...
Vortex flow around the bases of obstacles
(University of CambridgeSt. Catharine's CollegeDepartment of Engineering, 1979-02-06)
This thesis presents the results of experimental and theoretical investigations of the horseshoe vortex systems caused by boundary layer separation upstream of obstacles mounted on a wall. Flow visualization enabled these ...
A high level disc controller
(1979)
Since the emergence of the digital computer in the 1940s, computer architecture has been largely dictated by the requirements of mathematicians and scientists. Trends have thus been towards processing data as quickly and ...
Evolving Parallel Programs
(MIT Artificial Intelligence Laboratory, 1979-05)
Message passing is directed toward the production of programs that are intended to execute efficiently in a computing environment with a large number of processors. The paradigm attempts to address the computational issues ...
Numerical Shape from Shading and Occluding Contours in a Single View
(MIT Artificial Intelligence Laboratory, 1979-11)
An iterative method of using occluding boundary information is proposed to compute surface slope from shading.
We use a stereographic space rather than the more commonly used gradient space in order to express occluding ...