Title :
Adaptive shape-texture intra coding refreshment for error resilient object-based video
Author :
Soares, Luis Ducla ; Pereira, Fernando
Author_Institution :
Instituto de Telecomunicacoes, Instituto Superior Tecnico, Lisbon, Portugal
Abstract :
Video encoders may use several techniques to improve error resilience. In particular, for video encoders that rely on predictive (inter) coding to remove temporal redundancy, intra coding refreshment is especially useful to stop error propagation when errors occur in the transmission or storage of the coded streams, which can cause the decoded quality to decay very rapidly. In object-based video coders, intra coding refreshment can be applied to both shape and texture data. In this paper, a novel combined intra refreshment scheme is proposed which can be used by object-based video encoders, such as MPEG-4 video encoders, to adaptively determine when the shape and texture of the video objects in a scene should be refreshed in order to maximize the decoded video quality for a certain amount of bitrate resources.
Keywords :
coding errors; image texture; object-oriented methods; video coding; MPEG-4 video encoders; adaptive shape texture intra coding; coded streams; error propagation; error resilient object-based video; intra coding refreshment; shape determination; texture determination; Bit rate; Decoding; Layout; MPEG 4 Standard; Redundancy; Resilience; Shape measurement; Streaming media; Telecommunications; Video coding;
Conference_Titel :
Multimedia Signal Processing, 2002 IEEE Workshop on
Print_ISBN :
0-7803-7713-3
DOI :
10.1109/MMSP.2002.1203261