Image analysis – Applications – Motion or velocity measuring
Reexamination Certificate
2005-10-11
2005-10-11
Patel, Kanjibhai (Department: 2625)
Image analysis
Applications
Motion or velocity measuring
C348S155000
Reexamination Certificate
active
06954544
ABSTRACT:
A visual motion analysis method that uses multiple layered global motion models to both detect and reliably track an arbitrary number of moving objects appearing in image sequences. Each global model includes a background layer and one or more foreground “polybones”, each foreground polybone including a parametric shape model, an appearance model, and a motion model describing an associated moving object. Each polybone includes an exclusive spatial support region and a probabilistic boundary region, and is assigned an explicit depth ordering. Multiple global models having different numbers of layers, depth orderings, motions, etc., corresponding to detected objects are generated, refined using, for example, an EM algorithm, and then ranked/compared. Initial guesses for the model parameters are drawn from a proposal distribution over the set of potential (likely) models. Bayesian model selection is used to compare/rank the different models, and models having relatively high posterior probability are retained for subsequent analysis.
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Black Michael J.
Fleet David J.
Jepson Allan D.
Bever Patrick T.
Bever Hoffman & Harms LLP
Patel Kanjibhai
Tabatabai Abolfazl
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