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C. Kervrann, F. Heitz. A Hierarchical Markov Modeling Approach for the Segmentation and Tracking of Deformable Shapes. Graphical Models and Image Processing, 60(3):173-195, May 1998.

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In many applications of dynamic scene analysis, the objects or structures to be analyzed undergo deformations that have to be modeled. In this paper, we develop a hierarchical statistical modeling framework for the representation, segmentation, and tracking of 2D deformable structures in image sequences. The model relies on the specification of a template, on which global as well as local deformations are defined. Global deformations are modeled using a statistical modal analysis of the deformations observed on a representative population. Local deformations are represented by a (first-oder) Markov random process. A model-based segmentation of the scene is obtained by a joint bayesian estimation of global deformation parameters and local deformation variables. Spatial or spatio-temporal observations are considered in this estimation procedure, yielding an edge-based or a motion-based segmentation of the scene. The segmentation procedure is combined with a temporal tracking of the deformable structure over long image sequences, using a kalman filtering approach. This combined segmentation-tracking procedure has produced reliable extraction of deformable parts from long image sequences in adverse situations such as low signal-to-noise ratio, nongaussian noise, partial occlusions, or random initialization. The approach is demonstrated on a variety of synthetic as well as real-world image sequences featuring different classes of deformable objects


Charles Kervrann

BibTex Reference

   Author = {Kervrann, C. and Heitz, F.},
   Title = {A Hierarchical Markov Modeling Approach for the Segmentation and Tracking of Deformable Shapes},
   Journal = {Graphical Models and Image Processing},
   Volume = {60},
   Number = {3},
   Pages = {173--195},
   Month = {May},
   Year = {1998}

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