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Paper Abstract and Keywords
Presentation 2009-11-20 11:30
Separable Adaptive Interpolation Filter with Region Dividing Technique for Motion Compensation
Shohei Matsuo, Seishi Takamura, Hirohisa Jozawa (NTT Corp.) IE2009-118
Abstract (in Japanese) (See Japanese page) 
(in English) Video coding standards employ inter-frame prediction with motion compensation to reduce temporal redundancy. Motion compensation of integer-pel accuracy is not effective for fine movements and the coding efficiency deteriorates. Therefore, motion compensation of quarter-pel accuracy was introduced into H.264/AVC. The one dimensional 6-tap filter is used for the interpolation. However, the values of the filter coefficients are constant regardless of the resolution and the characteristic of the input video.
The coding tool called ``adaptive interpolation filter" (AIF) was proposed in Video Coding Experts Group (VCEG) of ITU-T. AIF optimizes the filter coefficients on frame basis. However, when the frame is divided into multiple regions where each region has different characteristics, the coding efficiency could improve by optimizing them on region basis. Consequently, we propose the region-based adaptive interpolation filter taking into account the image locality. The simulation results showed that the bit-rate reduction under the same PSNR was about 2 % compared to the conventional AIF.
Keyword (in Japanese) (See Japanese page) 
(in English) H.264/AVC / motion compensation / adaptive interpolation filter / image locality / region dividing / coding efficiency / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 292, IE2009-118, pp. 113-116, Nov. 2009.
Paper # IE2009-118 
Date of Issue 2009-11-12 (IE) 
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF IE2009-118

Conference Information
Conference Date 2009-11-19 - 2009-11-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyushu Sangyo Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IE 
Conference Code 2009-11-ME-AIT-BCT-IE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Separable Adaptive Interpolation Filter with Region Dividing Technique for Motion Compensation 
Sub Title (in English)  
Keyword(1) H.264/AVC  
Keyword(2) motion compensation  
Keyword(3) adaptive interpolation filter  
Keyword(4) image locality  
Keyword(5) region dividing  
Keyword(6) coding efficiency  
1st Author's Name Shohei Matsuo  
1st Author's Affiliation NTT Cyber Space Laboratories, NTT Corporation (NTT Corp.)
2nd Author's Name Seishi Takamura  
2nd Author's Affiliation NTT Cyber Space Laboratories, NTT Corporation (NTT Corp.)
3rd Author's Name Hirohisa Jozawa  
3rd Author's Affiliation NTT Cyber Space Laboratories, NTT Corporation (NTT Corp.)
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Date Time 2009-11-20 11:30:00 
Presentation Time 20 
Registration for IE 
Paper # IEICE-IE2009-118 
Volume (vol) IEICE-109 
Number (no) no.292 
Page pp.113-116 
#Pages IEICE-4 
Date of Issue IEICE-IE-2009-11-12 

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