Search
Now showing items 1-10 of 90
Combining Object and Feature Dynamics in Probabilistic Tracking
(2005-03-02)
Objects can exhibit different dynamics at different scales, a property that isoftenexploited by visual tracking algorithms. A local dynamicmodel is typically used to extract image features that are then used as inputsto a ...
Receptive field structures for recognition
(2005-03-01)
Localized operators, like Gabor wavelets and difference-of-Gaussian filters, are considered to be useful tools for image representation. This is due to their ability to form a  sparse code that can serve as a basis set ...
An Expectation Maximization Approach for Integrated Registration, Segmentation, and Intensity Correction
(2005-04-01)
This paper presents a statistical framework which combines the registration of an atlas with the segmentation of MR images. We use an Expectation Maximization-based algorithm to find a solution within the model, which ...
Combining Variable Selection with Dimensionality Reduction
(2005-03-30)
This paper bridges the gap between variable selection methods (e.g., Pearson coefficients, KS test) and dimensionality reductionalgorithms (e.g., PCA, LDA). Variable selection algorithms encounter difficulties dealing with ...
Matrix Approximation and Projective Clustering via Iterative Sampling
(2005-03-29)
We present two new results for the problem of approximating a given real m by n matrix A by a rank-k matrix D, where k < min{m, n}, so as to minimize ||A-D||_F^2. It is known that bysampling O(k/eps) rows of the matrix, ...
Motion Coordination Using Virtual Nodes
(2005-04-06)
We describe how a virtual node abstraction layer can be used to coordinate the motion of real mobile nodes in a region of 2-space. In particular, we consider how nodes in a mobile ad hoc network can arrange themselves along ...
File Synchronization with Vector Time Pairs
(2005-02-28)
Vector time pairs are a new method for trackingsynchronization metadata. A vector time pairconsists of two vector times: one tracking filemodification history and one tracking filesynchronization history. Because the ...
On Relational Analysis of Algebraic Datatypes
(2005-04-05)
We present a technique that enables the use of finite modelfinding to check the satisfiability of certain formulaswhose intended models are infinite. Such formulas arisewhen using the language of sets and relations to ...
Wait-free Regular Storage from Byzantine Components
(2005-04-05)
We present a simple, efficient, and self-contained construction of a wait-free regular register from Byzantine storage components. Our construction utilizes a novel building block, called 1-regular register, which can be ...
Using Cyclic Memory Allocation to Eliminate Memory Leaks
(2005-10-26)
We present and evaluate a new memory management technique foreliminating memory leaks in programs with dynamic memoryallocation. This technique observes the execution of the program on asequence of training inputsto find ...