DocumentCode :
1989934
Title :
Complexity and quality assessment of MPEG-2 to H.264/AVC intra transcoding architectures
Author :
Notebaert, Stijn ; De Cock, Jan ; Vermeirsch, Kenneth ; Van de Walle, Rik
Author_Institution :
Dept. of Electron. & Inf. Syst. - Multimedia Lab., Ghent Univ. - IBBT, Ledeberg
fYear :
2007
fDate :
12-15 Feb. 2007
Firstpage :
1
Lastpage :
4
Abstract :
Transcoding is used in order to enable elegant adaptation of video sequences without fully decoding and recoding. For efficiency reasons, special attention is paid to transform-domain adaptation of video sequences, hereby avoiding the cost of forward and inverse DCT or, in the case of H.264/AVC, integer transforms. In this paper we compare different architectures for MPEG-2 to H.264/-AVC intra transcoding, both in pixel and transform domain. We provide a complexity and quality discussion of both architectures, and propose an alternative architecture which results in improved quality over the transform-domain approach at reduced computational complexity. We show that the complexity can be even further reduced by using a combination of different techniques. This results in the fastest transcoding architecture for all intra prediction modes while approaching the visual quality of the optimal rate-distortion curve.
Keywords :
computational complexity; transcoding; video coding; H.264/AVC; MPEG-2; computational complexity; integer transforms; intra-transcoding; rate-distortion curve; transform-domain adaptation; video coding; video sequences; Automatic voltage control; Computational complexity; Computer architecture; Costs; Decoding; Discrete cosine transforms; Quality assessment; Rate-distortion; Transcoding; Video sequences;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing and Its Applications, 2007. ISSPA 2007. 9th International Symposium on
Conference_Location :
Sharjah
Print_ISBN :
978-1-4244-0778-1
Electronic_ISBN :
978-1-4244-1779-8
Type :
conf
DOI :
10.1109/ISSPA.2007.4555557
Filename :
4555557
Link To Document :
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