Title :
Syntax and discontinuity based error concealment
Author :
Lynch, William E. ; Papadakis, Vasilios ; Krishnamurthy, Rajesh ; Le-Ngoc, Tho
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
In this paper we extend a joint source/channel coding scheme (syntax based error concealment (SBEC)) for MPEG2 compressed video, over noisy channels. The extension is called syntax and discontinuity based error concealment (SDBEC) which uses a smoothness criteria in the uncompressed domain to improve the concealment. SDBEC´s PSNR and subjective performance is much better than SBECs down to Bit Error Rates (BERs) of 10-4. This improvement comes at the cost of complexity. The effect of slice size on SBEC and SDBEC is studied and it is shown that reduced slice size improves picture quality and decreases complexity at higher BER´s
Keywords :
combined source-channel coding; computational complexity; data compression; video coding; MPEG2 compressed video; PSNR; SBEC; SDBEC; bit error rates; complexity; discontinuity based error concealment; joint source/channel coding scheme; noisy channels; picture quality; slice size; smoothness criteria; syntax based error concealment; uncompressed domain; Communication channels; Computer errors; Councils; Decoding; Error correction; Frequency; PSNR; Redundancy; Telecommunication standards; Video compression;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.779985
