Title :
Video transcoding technology for wireless communication systems
Author :
Iwasaki, Osamu ; Uenoyama, T. ; Ando, A. ; Nishitoba, T. ; Yukitake, T. ; EtoH, M.
Author_Institution :
Multimedia Res. Res. Lab., Matsushita Electr. Ind. Co. Ltd., Tokyo, Japan
Abstract :
In this paper, the quality-effective video transcoding technology between MPEG-4 Visual and H.261 or H.263 is proposed. Using the proposed technology, the quality of transcoded picture is kept higher than conventional technology (simply decoded and encoded) because of the use of intermediate data extracted from the input stream. The simulation results show more than 2 dB better picture quality at the maximum than conventional methods
Keywords :
video coding; visual communication; H.261; H.263; MPEG-4; transcoded picture quality; video transcoding technology; wireless communication systems; Communications technology; Data mining; Decoding; Discrete cosine transforms; Laboratories; Mobile communication; Quadratic programming; Transcoding; Videoconference; Wireless communication;
Conference_Titel :
Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5718-3
DOI :
10.1109/VETECS.2000.851392
