Now showing items 1-2 of 2

    • A contour-based approach to binary shape coding using a multiple grid chain code 

      Nunes, P; Marqués Acosta, Fernando; Pereira, F; Gasull Llampallas, Antoni (2000-05)
      Open Access
      This paper presents a contour-based approach to efficiently code binary shape information in the context of object-based video coding. This approach meets some of the most important requirements identified for the MPEG-4 ...
    • Hierarchical visual description schemes for still images and video sequences 

      Salembier Clairon, Philippe Jean; O'Connor, N; Correia Fernandez-Pereira, Paulo; Pereira, F (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Conference report
      Open Access
      This paper proposes two description schemes (DSs) to describe the visual information of an audio-visual (AV) document. The first one, is devoted to still images. It describes the image visual appearance and its structure ...