2002 | OriginalPaper | Buchkapitel
‘Dynamism of a Dog on a Leash’ or Behavior Classification by Eigen-Decomposition of Periodic Motions
verfasst von : Roman Goldenberg, Ron Kimmel, Ehud Rivlin, Michael Rudzsky
Erschienen in: Computer Vision — ECCV 2002
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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Following Futurism, we show how periodic motions can be represented by a small number of eigen-shapes that capture the whole dynamic mechanism of periodic motions. Spectral decomposition of a silhouette of an object in motion serves as a basis for behavior classification by principle component analysis. The boundary contour of the walking dog, for example, is first computed efficiently and accurately. After normalization, the implicit representation of a sequence of silhouette contours given by their corresponding binary images, is used for generating eigen-shapes for the given motion. Singular value decomposition produces these eigen-shapes that are then used to analyze the sequence. We show examples of object as well as behavior classification based on the eigen-decomposition of the binary silhouette sequence.