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Towards a Computational Theory of Semantic Memory
(1980-02-01)
Research in memory has been a frustrating task not least because of the intimate familiarity with what we are trying to understand, and partly also because the human cognitive system has developed as an interactive ...
Machine Recognition as Representation and Search
(1989-12-01)
Generality, representation, and control have been the central issues in machine recognition. Model-based recognition is the search for consistent matches of the model and image features. We present a comparative ...
Limits of Precision for Human Eye Motor Control
(1989-11-01)
Dichoptic presentation of vernier stimuli, i.e., one segment to each eye, yielded three times higher thresholds than binocular presentation, mainly due to uncorrelated movements of both eyes. Thresholds allow one to ...
Computation of Texture and Stereoscopic Depth in Humans
(1989-10-01)
The computation of texture and of stereoscopic depth is limited by a number of factors in the design of the optical front-end and subsequent processing stages in humans and machines. A number of limiting factors in ...
Real-Time Part Position Sensing
(1988-05-01)
A light stripe vision system is used to measure the location of polyhedral features of parts from a single frame of video camera output. Issues such as accuracy in locating the line segments of intersection in the image ...
Symbolic Construction of a 2D Scale-Space Image
(1988-04-01)
The shapes of naturally occurring objects characteristically involve spatial events occurring at many scales. This paper offers a symbolic approach to constructing a primitive shape description across scales for 2D ...
Preshaping Command Inputs to Reduce System Vibration
(1988-01-01)
A method is presented for generating shaped command inputs which significantly reduce or eliminate endpoint vibration. Desired system inputs are altered so that the system completes the requested move without residual ...
The Computational Study of Vision
(1988-04-01)
The computational approach to the study of vision inquires directly into the sort of information processing needed to extract important information from the changing visual image---information such as the three-dimensional ...
Dynamical Systems and Motion Vision
(1988-04-01)
In this paper we show how the theory of dynamical systems can be employed to solve problems in motion vision. In particular we develop algorithms for the recovery of dense depth maps and motion parameters using state ...
A Behavior-Based Arm Controller
(1988-06-01)
In this paper we describe a working, implemented controller for a real, physical mobile robot arm. The controller is composed of a collection of 15 independent behaviors which run, in real time, on a set of 8 loosely coupled ...