Combining Space and Time Processing for Shape Error Concealment

نویسندگان

  • Luis Ducla Soares
  • Fernando Pereira
چکیده

Several shape error concealment techniques for objectbased video have already been proposed in the literature. These techniques, however, are either spatial or temporal, in the sense that only information from one of these domains is considered during the concealment process. While spatial error concealment techniques only use spatially adjacent shape information to perform the concealment, temporal error concealment techniques rely on shape information from other time instants. This means that these techniques inherently have the limitations of the specific domain being considered and, therefore, cannot be used with acceptable results for all possible situations. In this paper, an adaptive spatio-temporal shape error concealment technique is proposed, which overcomes the drawbacks of working only in one domain, spatial or temporal, by adaptively choosing the most adequate type of concealment for each situation.

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تاریخ انتشار 2004