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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 ...
An Algorithm for Bootstrapping Communications
(2001-08-13)
I present an algorithm which allows two agents to generate a simple language based only on observations of a shared environment. Vocabulary and roles for the language are learned in linear time. Communication is robust and ...
Reducing Drift in Parametric Motion Tracking
(2001-05-07)
We develop a class of differential motion trackers that automatically stabilize when in finite domains. Most differ-ential trackers compute motion only relative to one previous frame, accumulating errors indefinitely. We ...
Motion Estimation from Disparity Images
(2001-05-07)
A new method for 3D rigid motion estimation from stereo is proposed in this paper. The appealing feature of this method is that it directly uses the disparity images obtained from stereo matching. We assume that the stereo ...
Programmable Self-Assembly: Constructing Global Shape using Biologically-inspire
(2001-06-01)
In this thesis I present a language for instructing a sheet of identically-programmed, flexible, autonomous agents (``cells'') to assemble themselves into a predetermined global shape, using local interactions. The ...
Modeling, Estimation, and Control of Robot-Soil Interactions
(2001-09-01)
This thesis presents the development of hardware, theory, and experimental methods to enable a robotic manipulator arm to interact with soils and estimate soil properties from interaction forces. Unlike the majority of ...
2D-3D Rigid-Body Registration of X-Ray Fluoroscopy and CT Images
(2001-08-01)
The registration of pre-operative volumetric datasets to intra- operative two-dimensional images provides an improved way of verifying patient position and medical instrument loca- tion. In applications from orthopedics ...
Intelligence by Design: Principles of Modularity and Coordination for Engineerin
(2001-09-01)
All intelligence relies on search --- for example, the search for an intelligent agent's next action. Search is only likely to succeed in resource-bounded agents if they have already been biased towards finding the right ...
Feature Point Detection and Curve Approximation for Early Processing of Freehand Sketches
(2001-05-01)
Freehand sketching is both a natural and crucial part of design, yet is unsupported by current design automation software. We are working to combine the flexibility and ease of use of paper and pencil with the processing ...
Generating Communications Systems Through Shared Context
(2002-01-01)
In a distributed model of intelligence, peer components need to communicate with one another. I present a system which enables two agents connected by a thick twisted bundle of wires to bootstrap a simple communication ...