DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kwang-deok Seo | ko |
dc.contributor.author | Seong-cheol Heo | ko |
dc.contributor.author | Kim, Jae Kyoon | ko |
dc.date.accessioned | 2013-03-03T16:50:41Z | - |
dc.date.available | 2013-03-03T16:50:41Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2002-11 | - |
dc.identifier.citation | SIGNAL PROCESSING-IMAGE COMMUNICATION, v.17, no.10, pp.857 - 875 | - |
dc.identifier.issn | 0923-5965 | - |
dc.identifier.uri | http://hdl.handle.net/10203/79548 | - |
dc.description.abstract | This paper proposes an adaptive rate control algorithm for MPEG-1 to MPEG-4 transcoder for video internetworking where a compressed video is transmitted through networks of different capacities. It is based on an adaptive logarithmic R-Q (rate-quantization) model for controlling the new target bit-rate of a transcoded MPEG-4 bitstream. In R-Q modeling, the R-Q characteristics predicted from a previous picture of the same picture type are used in combination with the R-Q data measured for the current picture. The proposed adaptive model takes into account the effect of picture dependencies arising in motion-compensated video coding. Furthermore, full advantage is taken of the special situation related to transcoding where a priori knowledge of the current R-Q data can be obtained by just counting the number of bits in the input bitstream without re-encoding. It is shown by simulation that the adaptive R-Q model-based rate control can efficiently control the output bit-rate to match the target bit-budget. (C) 2002 Elsevier Science B.V. All rights reserved. | - |
dc.language | English | - |
dc.publisher | Elsevier Science Bv | - |
dc.subject | DIGITAL VIDEO | - |
dc.title | Adaptive rate control algorithm based on logarithmic R-Q model for MPEG-1 to MPEG-4 transcoding | - |
dc.type | Article | - |
dc.identifier.wosid | 000179360800007 | - |
dc.identifier.scopusid | 2-s2.0-0036843504 | - |
dc.type.rims | ART | - |
dc.citation.volume | 17 | - |
dc.citation.issue | 10 | - |
dc.citation.beginningpage | 857 | - |
dc.citation.endingpage | 875 | - |
dc.citation.publicationname | SIGNAL PROCESSING-IMAGE COMMUNICATION | - |
dc.contributor.nonIdAuthor | Kwang-deok Seo | - |
dc.contributor.nonIdAuthor | Seong-cheol Heo | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | rate control | - |
dc.subject.keywordAuthor | transcoding | - |
dc.subject.keywordAuthor | video coding | - |
dc.subject.keywordAuthor | MPEG | - |
dc.subject.keywordPlus | DIGITAL VIDEO | - |
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