2026-04-17T21:20:03Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/1028342026-01-27T04:09:17Zcom_2072_1033col_2072_452950

Partition coding using multi-grid chain code and motion compensation Marqués Acosta, Fernando Gasull Llampallas, Antoni Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions Universitat Politècnica de Catalunya. GPI - Grup de Processament d'Imatge i Vídeo Àrees temàtiques de la UPC::Enginyeria de la telecomunicació Telecommunication Image segmentation Motion compensation Video coding Image representation Edge detection Prediction theory Computational complexity Telecomunicació In this paper, a lossy partition coding technique is presented which leads to decoded partitions with unnoticeable losses. It uses a hexagonal grid for contour representation and it is based on the concept of multi-grid chain code. This coding technique can be used in intra-frame mode or, in combination with partition prediction techniques, in interframe mode. In intra-frame mode, it leads to an average saving of 25% of the coding cost with respect to chain code techniques. The savings on inter-frame mode depend on the motion prediction approach. Results of coding binary shapes (concept of video object plane) as well as partitions with an arbitrary set of regions are presented. Peer Reviewed Postprint (published version) 1996 Conference report Marques, F., Gasull, A. Partition coding using multi-grid chain code and motion compensation. A: "ICIP 1996: 3rd International Conference on Image Processing: Lausanne, Switzerland: September 16-19, 1996". Lausanne: IEEE, 1996. https://hdl.handle.net/2117/102834 10.1109/ICIP.1996.561058 eng http://ieeexplore.ieee.org/document/561058/ http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Open Access Attribution-NonCommercial-NoDerivs 3.0 Spain 1 p. application/pdf IEEE