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Robust analysis of silhouettes by morphological size distributions
Barnich, Olivier; JODOGNE, Sébastien; Van Droogenbroeck, Marc
2006In Lecture Notes in Computer Science, 4179, p. 734-745
Peer reviewed
 

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Robust analysis of silhouettes by morphological size distributions
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Keywords :
Detection; Classification; Silhouette; Shape; Tracking; Human; Pedestrian
Abstract :
[en] We address the topic of real-time analysis and recognition of silhouettes. The method that we propose first produces object features obtained by a new type of morphological operators, which can be seen as an extension of existing granulometric filters, and then insert them into a tailored classification scheme. Intuitively, given a binary segmented image, our operator produces the set of all the largest rectangles that can be wedged inside any connected component of the image. The latter are obtained by a standard background subtraction technique and morphological filtering. To classify connected components into one of the known object categories, the rectangles of a connected component are submitted to a machine learning algorithm called EXtremely RAndomized trees (Extra-trees). The machine learning algorithm is fed with a static database of silhouettes that contains both positive and negative instances. The whole process, including image processing and rectangle classification, is carried out in real-time. Finally we evaluate our approach on one of today's hot topics: the detection of human silhouettes. We discuss experimental results and show that our method is stable and computationally effective. Therefore, we assess that algorithms like ours introduce new ways for the detection of humans in video sequences.
Research center :
Intelsig
Telim
Disciplines :
Computer science
Electrical & electronics engineering
Author, co-author :
Barnich, Olivier ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Télécommunications
JODOGNE, Sébastien ;  Centre Hospitalier Universitaire de Liège - CHU > Radiothérapie
Van Droogenbroeck, Marc  ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Télécommunications
Language :
English
Title :
Robust analysis of silhouettes by morphological size distributions
Publication date :
2006
Event name :
Advanced Concepts for Intelligent Vision Systems (ACIVS)
Event date :
18-09-2006 to 21-09-2006
Audience :
International
Journal title :
Lecture Notes in Computer Science
ISSN :
0302-9743
eISSN :
1611-3349
Publisher :
Springer-Verlag Berlin, Berlin, Germany
Special issue title :
Advanced Concepts for Intelligent Vision Systems (ACIVS)
Volume :
4179
Pages :
734-745
Peer reviewed :
Peer reviewed
Available on ORBi :
since 27 November 2008

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