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Coordinate-Independent Computations on Differential Equations
(1998-03-01)
This project investigates the computational representation of differentiable manifolds, with the primary goal of solving partial differential equations using multiple coordinate systems on general n- dimensional spaces. ...
Recovery of Three-Dimensional Objects from Single Perspective Images
(1998-03-01)
Any three-dimensional wire-frame object constructed out of parallelograms can be recovered from a single perspective two-dimensional image. A procedure for performing the recovery is given.
Monitoring Activities from Multiple Video Streams: Establishing a Common Coordinate Frame
(1999-04-01)
Passive monitoring of large sites typically requires coordination between multiple cameras, which in turn requires methods for automatically relating events between distributed cameras. This paper tackles the problem of ...
Detecting Digital Forgeries Using Bispectral Analysis
(1999-12-01)
With the rapid increase in low-cost and sophisticated digital technology the need for techniques to authenticate digital material will become more urgent. In this paper we address the problem of authenticating digital ...
Trajectory Mapping ("TM''): A New Non-Metric Scaling Technique
(1993-12-01)
Trajectory Mapping "TM'' is a new scaling technique designed to recover the parameterizations, axes, and paths used to traverse a feature space. Unlike Multidimensional Scaling (MDS), there is no assumption that the ...
Automatically Recovering Geometry and Texture from Large Sets of Calibrated Images
(1999-10-22)
Three-dimensional models which contain both geometry and texture have numerous applications such as urban planning, physical simulation, and virtual environments. A major focus of computer vision (and recently graphics) ...
Proceedings of the Fourth PHANTOM Users Group Workshop
(1999-11-04)
This Report contains the proceedings of the Fourth Phantom Users Group Workshop contains 17 papers presented October 9-12, 1999 at MIT Endicott House in Dedham Massachusetts. The workshop included sessions on, Tools ...
Proceedings of the Second PHANToM User's Group Workshop
(1997-12-01)
On October 19-22, 1997 the Second PHANToM Users Group Workshop was held at the MIT Endicott House in Dedham, Massachusetts. Designed as a forum for sharing results and insights, the workshop was attended by more than 60 ...
An Analog VLSI Chip for Estimating the Focus of Expansion
(1996-08-21)
For applications involving the control of moving vehicles, the recovery of relative motion between a camera and its environment is of high utility. This thesis describes the design and testing of a real-time analog ...
Internet Fish
(1996-08-01)
I have invented "Internet Fish," a novel class of resource-discovery tools designed to help users extract useful information from the Internet. Internet Fish (IFish) are semi-autonomous, persistent information brokers; ...