Search Results for author: Gregory Newstadt

Found 4 papers, 0 papers with code

Statistical Estimation and Clustering of Group-invariant Orientation Parameters

no code implementations15 Mar 2015 Yu-Hui Chen, Dennis Wei, Gregory Newstadt, Marc DeGraef, Jeffrey Simmons, Alfred Hero

We treat the problem of estimation of orientation parameters whose values are invariant to transformations from a spherical symmetry group.

Clustering

A Dictionary Approach to EBSD Indexing

no code implementations26 Feb 2015 Yu-Hui Chen, Se Un Park, Dennis Wei, Gregory Newstadt, Michael Jackson, Jeff P. Simmons, Marc De Graef, Alfred O. Hero

We discretize the domain of the forward model onto a dense grid of Euler angles and for each measured pattern we identify the most similar patterns in the dictionary.

Anomaly Detection Uncertainty Quantification

Coercive Region-level Registration for Multi-modal Images

no code implementations26 Feb 2015 Yu-Hui Chen, Dennis Wei, Gregory Newstadt, Jeffrey Simmons, Alfred Hero

We propose a coercive approach to simultaneously register and segment multi-modal images which share similar spatial structure.

Parameter estimation in spherical symmetry groups

no code implementations10 Nov 2014 Yu-Hui Chen, Dennis Wei, Gregory Newstadt, Marc DeGraef, Jeffrey Simmons, Alfred Hero

This paper considers statistical estimation problems where the probability distribution of the observed random variable is invariant with respect to actions of a finite topological group.

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