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Paper Abstract and Keywords
Presentation 2015-06-18 15:40
Block-Size Adaptive Expanding Diamond Motion Search for H.265/HEVC
Ryutaro Nishimura, Toshio Kondo, Takahiro Sasaki, Yuki Fukazawa (Mie Univ.) IE2015-39
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, the moving image resolution is enhancing greatly, as 4K broadcasting has begun and 8K broadcasting trial is scheduled to start in 2016.
Therefore highly efficient motion estimation occupying the most processing complexity is required for smooth encoding PC enviroment which has become essential to utilize these high definition moving image.
TZSearch, being proposed under such circumstance, has established reputation for achieving both high detection accuracy and low computation complexity.
However it can not sufficiently meet the requirement of complexity reduction because it repeats an expanding diamond search that has many
remote sparse search points being effective to escape local optimul trap.
Therefore, this paper presents a new efficient motion estimation method based on periodically expanding diamond search that is able to effectively reduce remote search complexity of expanding diamond search.
In this method, the periodical expansion is adaptively controlled by the size and flatness of the search block so that ineffective remote search, or it's computation complexity are widely reduced.
As a result, this proposed method can reduce about 83% AD calculation and improve memory access efficiency by 36%.
Keyword (in Japanese) (See Japanese page) 
(in English) Motion Estimation / H.265/HEVC / TZSearch / Diamond Search / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 96, IE2015-39, pp. 41-46, June 2015.
Paper # IE2015-39 
Date of Issue 2015-06-11 (IE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
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)
Download PDF IE2015-39

Conference Information
Committee IE  
Conference Date 2015-06-18 - 2015-06-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Cellular 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Image Processing and Coding, etc. 
Paper Information
Registration To IE 
Conference Code 2015-06-IE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Block-Size Adaptive Expanding Diamond Motion Search for H.265/HEVC 
Sub Title (in English)  
Keyword(1) Motion Estimation  
Keyword(2) H.265/HEVC  
Keyword(3) TZSearch  
Keyword(4) Diamond Search  
Keyword(5)  
Keyword(6)  
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Keyword(8)  
1st Author's Name Ryutaro Nishimura  
1st Author's Affiliation Mie University (Mie Univ.)
2nd Author's Name Toshio Kondo  
2nd Author's Affiliation Mie University (Mie Univ.)
3rd Author's Name Takahiro Sasaki  
3rd Author's Affiliation Mie University (Mie Univ.)
4th Author's Name Yuki Fukazawa  
4th Author's Affiliation Mie University (Mie Univ.)
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Speaker Author-1 
Date Time 2015-06-18 15:40:00 
Presentation Time 20 minutes 
Registration for IE 
Paper # IE2015-39 
Volume (vol) vol.115 
Number (no) no.96 
Page pp.41-46 
#Pages 6 
Date of Issue 2015-06-11 (IE) 

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