Titre du document / Document title
Nonrigid motion analysis : Articulated and elastic motion
Auteur(s) / Author(s)
AGGARWAL J. K. (1) ;
CAI Q. (1) ;
LIAO W. (1) ;
SABATA B. (1) ;
Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)
(1) Computer and Vision Research Center, Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, Texas 78712, ETATS-UNIS
Résumé / Abstract
Motion of physical objects in the world is, in general, nonrigid. In robotics and computer vision, the motion of nonrigid objects is of growing interest to researchers from a wide spectrum of disciplines. The nonrigid objects being studied may be generally categorized into three groups according to the degree of deformation of body parts: articulated, elastic, and fluid. In articulated motion, individual rigid parts of an object move independently of one another and the motion of the whole object is nonrigid in nature. Elastic motion is nonrigid motion that conforms to a certain degree of continuity or smoothness. Fluid motion violates even the continuity assumption and may involve topological variations and turbulent deformations. This paper presents an overview of existing work on articulated and elastic motion, motivated by problems relating to the motion of the human body and of an animal heart, respectively. We study various approaches for recovering the 3D structure and motion of objects through a sequence of images in a bottom-up fashion, a strategy widely employed by various investigators. These approaches are classified as (1) motion recovery without shape models, and (2) model-based analysis. In the discussion of each algorithm, we also include a description of the complexity of feature and motion constraints, which are highly related to each other.
Revue / Journal Title
Computer vision and image understanding
ISSN
1077-3142
CODEN CVIUF4
Source / Source
1998, vol. 70, n
o2, pp. 142-156 (104 ref.)
Langue / Language
Anglais
Editeur / Publisher
Elsevier, Amsterdam, PAYS-BAS
(1995)
(Revue)
Mots-clés anglais / English Keywords
;
;
;
;
;
;
;
;
;
;
Mots-clés français / French Keywords
;
;
;
;
;
;
;
;
;
;
Mots-clés espagnols / Spanish Keywords
;
;
;
;
;
;
;
;
;
;
Localisation / Location
INIST-CNRS, Cote INIST : 15463 A, 35400007585004.0020
Nº notice refdoc (ud4) : 2231983
