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In this paper, a new approach to the problem of visual data representation in the framework of multimedia is introduced. The approach, named dynamic coding, consists in a dynamic combination of multiple representation models and segmentation strategies. Given an application, these two degrees of freedom are assembled so as to yield a specific profile which meets the specifications dictated by the...
This paper describes an extension of a dynamic video coding scheme to provide object scalable functionalities. As a particular instance of the dynamic coding concept, the coding scheme considered here jointly optimizes video data partition and representation modes. Indeed, as there exists no universal video coding method, dynamic coding insures the choice of the most efficient technique (for instance...
This paper deals with content-based compression of binary-shape images. The proposed method is based on a polygonal approximation of the shape contours. A well-known approximation algorithm, from computer vision applications such as shape analysis and boundary pattern matching, is adapted to achieve a progressive representation. The resulting various levels of shape quality are encoded, from a coarse...
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