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Learning and recognising 3D models represented by multiple views by means of methods based on random graphs

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2 Author(s)
Sanfeliu, Alberto ; Inst. de Robotica i Informatica Ind., Univ. Politecnica de Catalunya, Barcelona, Spain ; Serratosa, F.

The aim of this article is to describe and compare the methods based on random graphs (RGs) which are applied to learn and recognize 3D objects represented by multiple views. These methods are based on modelling the objects by means of probabilistic structures that keep 1st and 2nd-order probabilities. That is, multiple views of a 3D object are represented by few RGs. The most important probabilistic structures presented in the literature are first-order random graphs (FORGs), function-described graphs (FDGs) and second-order random graphs(SORGs). In the learning process, each one of the 3D-object views are represented by an attribute graph (AC), and a group of AGs are synthesized in a RG. In the recognizing process, the view of the object is represented by an AG and then it is compared with the RG that model each one of the 3D-object prototypes. In this paper, it is explained the modelling of the 3D-objects and the methods of learning and recognition based on FORGs, FDGs and SORGs. We show some results of the methods for real 3D objects.

Published in:

Image Processing, 2003. ICIP 2003. Proceedings. 2003 International Conference on  (Volume:2 )

Date of Conference:

14-17 Sept. 2003

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