Segmentation of sub-cortical structures by the graph-shifts algorithm.

Segmentation of sub-cortical structures by the graph-shifts algorithm. Research Abstract Details 

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Segmentation of sub-cortical structures by the graph-shifts algorithm. Abstract Text:

Jason J Corso,Zhuowen Tu,Alan Yuille,Arthur Toga,

We propose a novel algorithm called graph-shifts for performing image segmentation and labeling. This algorithm makes use of a dynamic hierarchical representation of the image. This representation allows each iteration of the algorithm to make both small and large changes in the segmentation, similar to PDE and split-and-merge methods, respectively. In particular, at each iteration we are able to rapidly compute and select the optimal change to be performed. We apply graph-shifts to the task of segmenting sub-cortical brain structures. First we formalize this task as energy function minimization where the energy terms are learned from a training set of labeled images. Then we apply the graphshifts algorithm. We show that the labeling results are comparable in quantitative accuracy to other approaches but are obtained considerably faster: by orders of magnitude (roughly one minute). We also quantitatively demonstrate robustness to initialization and avoidance of local minima in which conventional boundary PDE methods fall.

Segmentation of sub-cortical structures by the graph-shifts algorithm. Publishing Authors By Initials

JJ Corso,Z Tu,A Yuille,A Toga,

For similar investigative techniques: epidemiologic methods: statistics as topic: sensitivity and specificity research abstracts see: investigative techniques: epidemiologic methods: statistics as topic: sensitivity and specificity research

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Segmentation of sub-cortical structures by the graph-shifts algorithm. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: Information processing in medical imaging : procee

VOLUME: 20

Page Numbers: 183-97

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ISSN: 1011-2499

DAY: 3

MONTH: 12

YEAR: 2007

Segmentation of sub-cortical structures by the graph-shifts algorithm. Information

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LANGUAGE: eng

NlmUniqueID: 9216871

Segmentation of sub-cortical structures by the graph-shifts algorithm. Keywords Mesh Terms:

KEYWORDS: Sensitivity and Specificity

MESH TERMS: methods

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Grant and Affiliation Information for Segmentation of sub-cortical structures by the graph-shifts algorithm.

AFFILIATION: Center for Computational Biology, Laboratory of Neuro Imaging, University of California, Los Angeles, USA. jcorso@ucla.edu

Country: Germany

AGENCY: United States NCRR

GRANT: U54 RR021813

ACRONYM: RR

MEDLINETA: Inf Process Med Imaging

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