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Volumetric shape description of range data using “Blobby Model”

Published: 01 July 1991 Publication History

Abstract

Recently in the field of computer vision, there have been many attempts to obtain a symbolic shape description of an object by fitting simple primitives to the range data of the object. In this paper, we introduce the "Blobby Model" for automatically generating a shape description from range data. This model can express a 3D surface as an isosurface of a scalar field which is produced by a number of field generating primitives. The fields from many primitives are blended with each other and can form a very complicated shape. To determine the number and distribution of primitives required to adequately represent a complex 3D surface, an energy function is minimized which measures the shape difference between the range data and the "Blobby Model". We start with a single primitive and introduce more primitives by splitting each primitive into two further primitives so as to reduce the energy value. In this manner, the shape of the 3D object is slowly recovered as the isosurface produced by many primitives. We have successfully applied this method to human face range data and typical results are shown. The method herein does not require any prior range segmentation.

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Published In

cover image ACM SIGGRAPH Computer Graphics
ACM SIGGRAPH Computer Graphics  Volume 25, Issue 4
July 1991
340 pages
ISSN:0097-8930
DOI:10.1145/127719
Issue’s Table of Contents
  • 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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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 01 July 1991
Published in SIGGRAPH Volume 25, Issue 4

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Author Tags

  1. blobby model
  2. energy minimization
  3. generalized algebraic surface
  4. implicit surface
  5. range data analysis
  6. ray tracing
  7. volumetric shape description

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