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A Fully Abstract Semantics for Event-Based Simulation
(1987-05-01)
This paper shows that, provided circuits contain no zero-delay loops, a tight relationship, full abstraction, exists between a natural event-based operational semantics for circuits and a natural denotational semantics ...
A Biological Model of Object Recognition with Feature Learning
(2003-06-01)
Previous biological models of object recognition in cortex have been evaluated using idealized scenes and have hard-coded features, such as the HMAX model by Riesenhuber and Poggio [10]. Because HMAX uses the same set ...
Massively Parallel Implementations of Theories for Apparent Motion
(1987-06-01)
We investigate two ways of solving the correspondence problem for motion using the assumptions of minimal mapping and rigidity. Massively parallel analog networks are designed to implement these theories. Their ...
Multigrid Relaxation Methods and the Analysis of Lightness, Shading and Flow
(1984-10-01)
Image analysis problems, posed mathematically as variational principles or as partial differential equations, are amenable to numerical solution by relaxation algorithms that are local, iterative, and often parallel. ...
Color Vision: Representing Material Categories
(1984-05-01)
We argue that one of the early goals of color vision is to distinguish one kind of material from another. Accordingly, we show that when a pair of image regions is such that one region has greater intensity at one wavelength ...
Routines
(1985-05-01)
Regularities in the word give rise to regularities in the way which we deal with the world. That is to say, we fall into routines. I have been studying the phenomena of routinization, the process by which institutionalized ...
Planning of Minimum-Time Trajectories for Robot Arms
(1984-11-01)
The minimum-time for a robot arm has been a longstanding and unsolved problem of considerable interest. We present a general solution to this problem that involves joint-space tesselation, a dynamic time-scaling ...
The Description of Large Systems
(1984-09-01)
In this paper we discuss the problems associated with the description and manipulation of large systems when their sources are not maintained as single fields. We show why and how tools that address these issues, such ...
Toward a Surface Primal Sketch
(1985-04-01)
This paper reports progress toward the development of a representation of significant surface changes in dense depth maps. We call the representation the Surface Primal Sketch by analogy with representation of intensity ...
Computational Experiments with a Feature Based Stereo Algorithm
(1984-01-01)
Computational models of the human stereo system can provide insight into general information processing constraints that apply to any stereo system, either artificial or biological. In 1977, Marr and Poggio proposed ...