Title :
Comparison of fixed-rate video codecs for wireless videophony
Author :
Streit, J. ; Hanzo, L.
Author_Institution :
Dept. of Electron. & Comput. Sci., Southampton Univ., UK
Abstract :
Gain-cost quantised, fixed but arbitrarily programmable rate discrete cosine transformed (DCT) video codecs, vector-quantised (VQ) and quad-tree (QT) coding algorithms are proposed and their video quality, complexity, compression ratio and error resilience trade-offs are comparatively analysed under identical conditions. Our candidate codecs are compared to the standard H261 and MPEG-2 benchmark codecs. The proposed codecs facilitate wireless videophony for quarter common intermediate format (QCIF) video sequences scanned at 10 frames/s at rates around 10 kbps in second-generation mobile systems
Keywords :
computational complexity; data communication; discrete cosine transforms; image sequences; land mobile radio; quadtrees; telecommunication standards; transform coding; vector quantisation; video codecs; video coding; videotelephony; 10 kbit/s; complexity; compression ratio; error resilience trade-offs; fixed-rate video codecs; gain-cost quantised fixed programmable rate discrete cosine transform video codecs; quad-tree coding algorithms; quarter common intermediate format video sequences; second-generation mobile systems; vector-quantised algorithms; video quality; wireless videophony; Algorithm design and analysis; Bit rate; Code standards; Discrete cosine transforms; Entropy; Motion compensation; Redundancy; Video codecs; Video compression; Video sequences;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.605902
