Paper Abstract and Keywords |
Presentation |
2014-10-03 10:20
Adaptive Expanding Diamond Search using Sub-Sampled Image except in the Small Central Area Atsushi Tachino, Ryutaro Nishimura, Toshio Kondo, Takahiro Sasaki, Yuki Fukazawa (Mie Univ.) VLD2014-70 ICD2014-63 IE2014-49 Link to ES Tech. Rep. Archives: ICD2014-63 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Demand for the high definition video is increasing, and improving compression performance is desired. Under such circumstances, H.265 with improved compression performance to twice from H.264 has attracted attention.However, the complexity of the process is greatly increased and one cannot get the sufficient encoding speed. The speed up of motion estimation process that accounts for most of the process is essential. TZSearch built into the reference software of H.265 is one of the search algorithm with high acculacy and efficiency. However, TZSearch is not enough to meet the requirements of hsmall computation complexity. Therefore, we proposed a motion estimation algorithm with two effective techniques. One technique is setting the expanding range of diamond search pattern ristricted by the distance from the current search center to next search center. Another technique is usage of the sub-sampled image at the distant search point. We implemented the proposed algorithm on the reference software. As a result, the algorithm reduces 60% of SAD operations and improve memory access efficiency by 35% compared to TZSearch in the condition of minimizin the deterioration of compression ratio and video quality. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
H.265 / Motion Estimation / Expanding Diamond Search / TZSearch / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 114, no. 233, IE2014-49, pp. 57-62, Oct. 2014. |
Paper # |
IE2014-49 |
Date of Issue |
2014-09-25 (VLD, ICD, 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 |
VLD2014-70 ICD2014-63 IE2014-49 Link to ES Tech. Rep. Archives: ICD2014-63 |
Conference Information |
Committee |
IE ICD VLD IPSJ-SLDM |
Conference Date |
2014-10-02 - 2014-10-03 |
Place (in Japanese) |
(See Japanese page) |
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Paper Information |
Registration To |
IE |
Conference Code |
2014-10-IE-ICD-VLD-SLDM |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Adaptive Expanding Diamond Search using Sub-Sampled Image except in the Small Central Area |
Sub Title (in English) |
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Keyword(1) |
H.265 |
Keyword(2) |
Motion Estimation |
Keyword(3) |
Expanding Diamond Search |
Keyword(4) |
TZSearch |
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1st Author's Name |
Atsushi Tachino |
1st Author's Affiliation |
Mie University (Mie Univ.) |
2nd Author's Name |
Ryutaro Nishimura |
2nd Author's Affiliation |
Mie University (Mie Univ.) |
3rd Author's Name |
Toshio Kondo |
3rd Author's Affiliation |
Mie University (Mie Univ.) |
4th Author's Name |
Takahiro Sasaki |
4th Author's Affiliation |
Mie University (Mie Univ.) |
5th Author's Name |
Yuki Fukazawa |
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Mie University (Mie Univ.) |
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Speaker |
Author-1 |
Date Time |
2014-10-03 10:20:00 |
Presentation Time |
25 minutes |
Registration for |
IE |
Paper # |
VLD2014-70, ICD2014-63, IE2014-49 |
Volume (vol) |
vol.114 |
Number (no) |
no.231(VLD), no.232(ICD), no.233(IE) |
Page |
pp.57-62 |
#Pages |
6 |
Date of Issue |
2014-09-25 (VLD, ICD, IE) |
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