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Paper Abstract and Keywords
Presentation 2008-10-06 16:20
A study on Improvement of Intra Prediction of H.264/AVC
Shohei Matsuo, Seishi Takamura, Yoshiyuki Yashima (NTT) SIP2008-112 IE2008-76
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes an improved intra prediction method of H.264/AVC. The conventional prediction uses only adjoining pixels as reference pixels. The residual energy could increace if the decoded reference pixels have occlusion which would result in low coding efficiency. In addition, the conventional prediction copies the same weighted prediction value to several of the pixels lying in the prediction direction. However, if the original image has patterns like gradations, the residual energy could increase which would also result in low coding efficiency.
To handle the problems, we separately proposed two improved methods. One allows not only adjoining pixels but also distant pixels to be referred. The other generates prediction signals with a spatial gradient. In this paper, we confirmed the performance of combination of two methods. The simulation results showed the combined method outperformed the single proposed method at high bit-rate.
Keyword (in Japanese) (See Japanese page) 
(in English) H.264/AVC / Intra prediction / Multiple reference lines / Gradient / Occlusion / Gradation / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 229, IE2008-76, pp. 29-34, Oct. 2008.
Paper # IE2008-76 
Date of Issue 2008-09-29 (SIP, IE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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reproduction
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)
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Conference Information
Committee IE SIP IPSJ-SLDM  
Conference Date 2008-10-06 - 2008-10-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Aiina Center (Morioka) 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IE 
Conference Code 2008-10-IE-SIP-SLDM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on Improvement of Intra Prediction of H.264/AVC 
Sub Title (in English)  
Keyword(1) H.264/AVC  
Keyword(2) Intra prediction  
Keyword(3) Multiple reference lines  
Keyword(4) Gradient  
Keyword(5) Occlusion  
Keyword(6) Gradation  
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Keyword(8)  
1st Author's Name Shohei Matsuo  
1st Author's Affiliation NTT Cyber Space Laboratories (NTT)
2nd Author's Name Seishi Takamura  
2nd Author's Affiliation NTT Cyber Space Laboratories (NTT)
3rd Author's Name Yoshiyuki Yashima  
3rd Author's Affiliation NTT Cyber Space Laboratories (NTT)
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Speaker Author-1 
Date Time 2008-10-06 16:20:00 
Presentation Time 25 minutes 
Registration for IE 
Paper # SIP2008-112, IE2008-76 
Volume (vol) vol.108 
Number (no) no.228(SIP), no.229(IE) 
Page pp.29-34 
#Pages
Date of Issue 2008-09-29 (SIP, IE) 


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