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Paper Abstract and Keywords
Presentation 2006-07-14 14:05
Study on Performance Improvement of R-D Optimization Technology Considering Local Image Feature
Tomonobu Yoshino, Sei Naito, Atsushi Koike (KDDI R&D Labs.) MoMuC2006-27
Abstract (in Japanese) (See Japanese page) 
(in English) It is expected that HDTV broadcasting service over IP networks such as IPTV and VOD became popular. Assuming the use of high-speed internet service such as DSL and FTTH, the coding bit-rate should be limited up to 10Mbps. However, the required coding bit-rate to assure HDTV broadcasting quality by MPEG-2 technology is approximately 20Mbps. Therefore, more effective video coding technology is required to satisfy this requirement. Generally, MC + DCT hybrid coding technology is effective to achieve high coding efficiency. H.264/MPEG-4 AVC High Profile defines several coding functions to realize high coding efficiency especially for HDTV, and this standard now corresponds to the most effective video coding scheme for HDTV among international video coding standard. In this standard, precise mode decision on Frame/Field coding mode selection, which is one of the coding functions to realize high coding efficiency, and MC (Motion Compensated interframe prediction) macroblock size selection is required to achieve high coding efficiency. In the conventional R-D optimization scheme, the cost function is defined by approximating the Lagrange coefficient. However, the Lagrange coefficient should be calculated dependent on image feature, and this approximate coefficient might cause performance degradation. From this perspective, we clarified performance improvement of R-D optimization scheme for H.264/MPEG-4 AVC High Profile coding. The difference in Lagrange coefficient between the actual measurement and the approximating scheme was confirmed. Moreover, we calculated the actual Lagrange coefficient by frame, and locality of the Lagrange coefficient was confirmed.
Keyword (in Japanese) (See Japanese page) 
(in English) H.264/MPEG-4 AVC / R-D Optimization / HDTV / / / / /  
Reference Info. IEICE Tech. Rep., vol. 106, July 2006.
Paper #  
Date of Issue 2006-07-07 (MoMuC) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF MoMuC2006-27

Conference Information
Committee MoNA  
Conference Date 2006-07-14 - 2006-07-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Kansai Univ. Centenary Memorial Hall, Kansai Univ. Senriyama Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Multimedia Applications for the Era of Super High Speed Mobile Comunication and General Issues 
Paper Information
Registration To MoNA 
Conference Code 2006-07-MoMuC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study on Performance Improvement of R-D Optimization Technology Considering Local Image Feature 
Sub Title (in English)  
Keyword(1) H.264/MPEG-4 AVC  
Keyword(2) R-D Optimization  
Keyword(3) HDTV  
1st Author's Name Tomonobu Yoshino  
1st Author's Affiliation KDDI R&D Laboratories Inc. (KDDI R&D Labs.)
2nd Author's Name Sei Naito  
2nd Author's Affiliation KDDI R&D Laboratories Inc. (KDDI R&D Labs.)
3rd Author's Name Atsushi Koike  
3rd Author's Affiliation KDDI R&D Laboratories Inc. (KDDI R&D Labs.)
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Date Time 2006-07-14 14:05:00 
Presentation Time 25 
Registration for MoNA 
Paper # IEICE-MoMuC2006-27 
Volume (vol) IEICE-106 
Number (no) no.161 
Page pp.7-12 
#Pages IEICE-6 
Date of Issue IEICE-MoMuC-2006-07-07 

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