DocumentCode :
3496624
Title :
A novel rate-based macroblock classification for fast mode decision in H.264 video coding
Author :
Yusuf, Md Salah Uddin ; Ahmad, Mohiuddin
Author_Institution :
Dept. of Electr. & Electron. Eng., Khulna Univ. of Eng. & Technol., Khulna, Bangladesh
fYear :
2011
fDate :
22-24 Dec. 2011
Firstpage :
548
Lastpage :
553
Abstract :
In this paper, a novel rate-based macroblock classification is proposed for fast mode decision in H.264 video coding standard. The main idea is to classify each macroblock into simple motion or complex motion contents based on the Inter16×16 mode´s residue block bit-rate and then according to the classification different mode searching orders with distinct early termination schemes are employed. This new algorithm is very simple for both hardware and software implementations without extra computational module. To speedup the intra mode decision, a new fast Intra 4×4 mode selection algorithm is also proposed by choosing most likely modes using the low complexity SATD cost as screening function. It is demonstrated by experimental results that the proposed rate-based fast algorithm can reduce 47% to 65% of the H.264 total encoding time with negligible degradation in the rate-distortion performance. While the rate-based algorithm combined with the fast intra mode selection method could further speedup 5% to 10% of the encoding time with only little rate-distortion degradation.
Keywords :
image classification; video coding; H.264 video coding; block bitrate; complex motion; fast mode decision; novel rate based macroblock classification; rate based algorithm; simple motion; Early termination Scheme; H.264/AVC; Macroblock; Mode Decision; Video Coding;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computer and Information Technology (ICCIT), 2011 14th International Conference on
Conference_Location :
Dhaka
Print_ISBN :
978-1-61284-907-2
Type :
conf
DOI :
10.1109/ICCITechn.2011.6164849
Filename :
6164849
Link To Document :
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