Title :
Bidirectional block placement in corrupted fixed-length entropy coded video streams
Author :
Llados-Bentaus, R. ; Stevenson, Robert L.
Author_Institution :
Dept. of Electr. Eng., Notre Dame Univ., IN, USA
Abstract :
Fixed length entropy codes (FLC) have been employed as an alternative to the usual variable length codes (VLC) in video codecs. The effect of a transmission error in an FLC coded stream does not propagate beyond the corrupted codeword because of its fixed parsing structure. This paper presents a new decoding algorithm for FLC compressed video streams that fully exploits the error resilience properties of FLC codes combined with spatial synchronization points. While maintaining the compression efficiency of VLC coded video streams, the proposed solution is a novel idea to combat the consequences of transmission errors and it is totally compatible with more traditional solutions such as error concealment and forward error correcting codes
Keywords :
data compression; decoding; entropy codes; synchronisation; video coding; FLC coded stream; bidirectional block placement; compressed video streams; compression efficiency; corrupted fixed-length entropy coded video streams; decoding algorithm; error resilience properties; fixed parsing structure; spatial synchronization points; transmission error; video codecs; Code standards; Decoding; Discrete cosine transforms; Entropy; Error correction codes; Insertion loss; Resilience; Streaming media; Video codecs; Video compression;
Conference_Titel :
Circuits and Systems, 1998. Proceedings. 1998 Midwest Symposium on
Conference_Location :
Notre Dame, IN
Print_ISBN :
0-8186-8914-5
DOI :
10.1109/MWSCAS.1998.759513
