Title :
Semi-fixed-length motion vector coding for H.263-based low bit rate video compression
Author :
Côté, Guy ; Gallant, Michael ; Kossentiai, F.
Author_Institution :
Dept. of Electr. Eng., British Columbia Univ., Vancouver, BC, Canada
fDate :
10/1/1999 12:00:00 AM
Abstract :
We present a semi-fixed-length motion vector coding method for H.263-based low bit rate video compression. The method exploits structural constraints within the motion field. The motion vectors are encoded using semi-fixed-length codes, yielding essentially the same levels of rate-distortion performance and subjective quality achieved by H.263´s Huffman-based variable length codes in a noiseless environment. However, such codes provide substantially higher error resilience in a noisy environment
Keywords :
cellular radio; code standards; data compression; fading channels; noise; rate distortion theory; telecommunication standards; video coding; BSC model; GSM fading channel model; H.263-based low bit rate video compression; Huffman-based variable length codes; binary symmetric channel; error resilience; motion field; noiseless environment; noisy environment; rate-distortion performance; semi-fixed-length codes; semi-fixed-length motion vector coding; structural constraints; subjective quality; Bit rate; Decoding; Entropy coding; Image coding; Noise level; Resilience; Telephony; Video coding; Video compression; Working environment noise;
Journal_Title :
Image Processing, IEEE Transactions on
