Title :
Error resiliency measure for RVLC codes
Author :
Xu, Liyang ; Kumar, Sunil
Author_Institution :
Electr. & Comput. Eng. Dept., Clarkson Univ., Potsdam, NY, USA
Abstract :
Video signals transmitted over error-prone wireless channels are often corrupted by bit errors. Due to their superior data recovery performance, the reversible variable length coding (RVLC) has been used as an error resiliency scheme in the MPEG-4 and H.263 video coding standards. In order to evaluate and compare the error resiliency performance of RVLC codes, we develop an error resiliency measure in this letter. Using this measure, different RVLC schemes are compared for MPEG-4 video sequences. The effects of propagating and nonpropagating errors are discussed as well.
Keywords :
channel coding; code standards; data compression; error analysis; image sequences; variable length codes; video coding; video communication; wireless channels; H.263 video coding standard; MPEG-4; RVLC code; data recovery performance; error propagation; error resiliency measurement; error-prone wireless channel; nonpropagation error; reversible variable length coding; video sequence; video signal transmission; Code standards; Computer errors; Decoding; Error correction codes; MPEG 4 Standard; Propagation losses; Video coding; Video sequences; Error propagation; MPEG-4; error resiliency; reversible variable length codes (RVLCs); video coding;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2005.861594
