A contribution to video coding using layers
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Layered representations of video sequences, originally introduced in , are important in several applications. Specifically, they are very appropriate for object tracking, object manipulation, content-based scalability and video coding which are among the main functionalities of the future standard MPEG-4,  . In addition they will be also useful for MPEG-7 in the corresponding image analysis part. A robust representation of moving images based on layers has been presented in . The objective of this paper is to provide the first results on video coding using the segmentation scheme presented in . To that end, the shape information (alpha map) has been coded using a Multigrid Chain Code approach and the layers (the texture) have been coded using a Shape Adaptive DCT scheme that is being considered as a texture coding approach in the current definition of MPEG-4. Results are provided for a variety of compression ratios and different image quality that prove the validity of the approach.
CitationTorres, L., Lecha, M. A contribution to video coding using layers. A: European Signal Processing Conference. "EUSIPCO 1998: Signal processing IX: theories and applications; proceedings of Eusipco-98, Ninth European Signal Processing Conference: Rhodes, Greece: 8-11 September 1998". Rhodes: 1998, p. 257-259.