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Geometrically deformed models: a method for extracting closed geometric models form volume data

Published: 01 July 1991 Publication History

Abstract

We propose a new approach to the problem of generating a simple topologically-closed geometric model from a point-sampled volume data set. We call such a model a Geometrically Deformed Model or GDM. A GDM is created by placing a 'seed' model in the volume data set. The model is then deformed by a relaxation process that minimizes a set of constraints that provides a measure of how well the model fits the features in the data. Constraints are associated with each vertex in the model that control local deformation, interaction between the model and the data set, and the shape and topology of the model. Once generated, a GDM can be used for visualization, shape recognition, geometric measurements, or subjected to a series of geometric operations. This technique is of special importance because of the advent of nondestructive sensing equipment (CT, MRI) that generates point samples of true three-dimensional objects.

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          cover image ACM Conferences
          SIGGRAPH '91: Proceedings of the 18th annual conference on Computer graphics and interactive techniques
          July 1991
          393 pages
          ISBN:0897914368
          DOI:10.1145/122718
          Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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          Published: 01 July 1991

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          Author Tags

          1. constraint minimization
          2. deformable models
          3. geometric modelling
          4. volume modelling
          5. volume visualization

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