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

00925njm 22002777a 4500 dc Marqués Acosta, Fernando author Gasull Llampallas, Antoni author 1996 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) 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 Partition coding using multi-grid chain code and motion compensation