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Paper Abstract and Keywords
Presentation 2016-05-10 09:00
A Optimization for HEVC Compression Algorithm of the Light-field Video
Takamasa Mitani, Satoshi Shimaya, Yuttakon Yuttakonkit, Yasuhiko Nakashima (NAIST) CPSY2016-6 DC2016-6
Abstract (in Japanese) (See Japanese page) 
(in English) A light field image is a type of images that can generate the refocus images and depth information after
shooting. Mainly, There are two image types which realize the light-field imges, so we treats the one of the type that
the light-field images consists of the many small circle images. Assuming that light-field images will be broadcasted
on the next television infrastructure, this movies will be encoded in HEVC. so, We researched the properties of the
encoding process of the the light-field images. We found that the depth of CTU splitting are prone to be deeper at
the high brightness area in the scene, but in some case, this deep CTU splitting is inefficiency. so we optimized the
encoding process, in most effective case, we achieved that the process speed got 150% faster than original process,
but bit generation increase is within 2.34% and PSNR drops is -0.59 dB. Moreover, to reduce the drop of the image
quality, We applied the median-blur filter and edge-detection filter to the light-field images, we achieved that the
process speed got 16% faster than original process, the bit generation increase is within 0.76% and PSNR drops can
be suppressed to -0.28dB.
Keyword (in Japanese) (See Japanese page) 
(in English) 4D-movie / Light-field-movie / HEVC / / / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 19, CPSY2016-6, pp. 41-46, May 2016.
Paper # CPSY2016-6 
Date of Issue 2016-05-02 (CPSY, DC) 
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 CPSY2016-6 DC2016-6

Conference Information
Committee CPSY DC IPSJ-ARC  
Conference Date 2016-05-09 - 2016-05-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Unaduki Suginoi Hotel 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Dependable Computing Systems, etc. (HotSPA: Hot SPring Annual meeting) 
Paper Information
Registration To CPSY 
Conference Code 2016-05-CPSY-DC-ARC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Optimization for HEVC Compression Algorithm of the Light-field Video 
Sub Title (in English)  
Keyword(1) 4D-movie  
Keyword(2) Light-field-movie  
Keyword(3) HEVC  
Keyword(4)  
Keyword(5)  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Takamasa Mitani  
1st Author's Affiliation Nara Institute of Science and Technology (NAIST)
2nd Author's Name Satoshi Shimaya  
2nd Author's Affiliation Nara Institute of Science and Technology (NAIST)
3rd Author's Name Yuttakon Yuttakonkit  
3rd Author's Affiliation Nara Institute of Science and Technology (NAIST)
4th Author's Name Yasuhiko Nakashima  
4th Author's Affiliation Nara Institute of Science and Technology (NAIST)
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Speaker Author-1 
Date Time 2016-05-10 09:00:00 
Presentation Time 30 minutes 
Registration for CPSY 
Paper # CPSY2016-6, DC2016-6 
Volume (vol) vol.116 
Number (no) no.19(CPSY), no.20(DC) 
Page pp.41-46 
#Pages 6 
Date of Issue 2016-05-02 (CPSY, DC) 

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