Title :
Codeword assignment for fixed-length entropy coded video streams
Author :
Bernaus, Ramon Llados ; Stevenson, Robert L.
Author_Institution :
Dept. of Electr. Eng., Notre Dame Univ., IN, USA
fDate :
30 Mar-1 Apr 1998
Abstract :
Fixed length entropy codes (FLC) have been successfully employed as an alternative to the popular variable length codes (VLC) in video codecs. This paper presents a codeword assignment for FLC coded interframe coefficients and motion vectors that minimizes the effects of bit errors on the decoded video sequence. Intensive testing has shown that with the proposed solution, the distortion introduced by transmission errors is coarsely half of that obtained with VLC codes, while maintaining the compression efficiency
Keywords :
coding errors; decoding; discrete cosine transforms; entropy codes; image sequences; motion compensation; transform coding; video codecs; video coding; DCT coefficients; bit errors; codeword assignment; compression efficiency; decoded video sequence; distortion; fixed length entropy codes; fixed-length entropy coded video streams; interframe coefficients; motion vectors; motion-compensated hybrid encoders; testing; transmission errors; variable length codes; video codecs; Algorithm design and analysis; Decoding; Discrete cosine transforms; Entropy coding; Probability distribution; Streaming media; Testing; Video codecs; Video compression; Video sequences;
Conference_Titel :
Data Compression Conference, 1998. DCC '98. Proceedings
Conference_Location :
Snowbird, UT
Print_ISBN :
0-8186-8406-2
DOI :
10.1109/DCC.1998.672155
