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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, no2, pp. 142-156 (104 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Amsterdam, PAYS-BAS  (1995) (Revue)

Mots-clés anglais / English Keywords

Image processing

;

Image analysis

;

Motion estimation

;

Smoothing

;

Image reconstruction

;

Tridimensional image

;

Taxonomy

;

Pattern extraction

;

Algorithm

;

Computer vision

;

Mots-clés français / French Keywords

Traitement image

;

Analyse image

;

Estimation mouvement

;

Lissage

;

Reconstruction image

;

Image tridimensionnelle

;

Systématique

;

Extraction forme

;

Algorithme

;

Vision ordinateur

;

Mots-clés espagnols / Spanish Keywords

Procesamiento imagen

;

Análisis imagen

;

Estimación movimiento

;

Alisamiento

;

Reconstrucción imagen

;

Imagen tridimensional

;

Sistemática

;

Extracción forma

;

Algoritmo

;

Visión ordenador

;

Localisation / Location

INIST-CNRS, Cote INIST : 15463 A, 35400007585004.0020

Nº notice refdoc (ud4) : 2231983



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