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Paper Abstract and Keywords
Presentation 2015-12-02 12:05
A proposal of the light field image compression and decompression using HEVC
Takamasa Mitani, Thi Hong Tran, Shinya Takamaeda, Yasuhiko Nakashima (NAIST)
Abstract (in Japanese) (See Japanese page) 
(in English) A light field image is a type of images that can refocus and extend the depth of field by post processing. A light field raw image consists of multiple image blocks. Each image block has 75x75 pixels.The light field image commonly requires 4 times the resolution of the final images.
However, The typical image compression technique for this type of data is not standardized. In this paper,
Due to high correlation of neighbor images, Each group of adjacent images is considered as frames of video,
we compressed these frames by HEVC.
We achieved 69.5% bit saving which is 2.5% better than that of compression techniques for still image. We varied the size of the blocks of this frames, the differences of the ratio of bit saving for this image
using proposal methods are within 1%.
We applied the just same splitting image technique to the pseudo light field movie and varied the size of the blocks of this movie,the differences of the ratio of bit saving are also within 1%.
Keyword (in Japanese) (See Japanese page) 
(in English) HEVC / light field image / light field movie / / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 342, CPSY2015-67, pp. 33-38, Dec. 2015.
Paper # CPSY2015-67 
Date of Issue 2015-11-24 (CPSY) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380

Conference Information
Committee VLD DC IPSJ-SLDM CPSY RECONF ICD CPM  
Conference Date 2015-12-01 - 2015-12-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagasaki Kinro Fukushi Kaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Design Gaia 2015 -New Field of VLSI Design- 
Paper Information
Registration To CPSY 
Conference Code 2015-12-VLD-DC-SLDM-CPSY-RECONF-ICD-CPM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A proposal of the light field image compression and decompression using HEVC 
Sub Title (in English)  
Keyword(1) HEVC  
Keyword(2) light field image  
Keyword(3) light field movie  
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1st Author's Name Takamasa Mitani  
1st Author's Affiliation Nara Institute of Science and Technology (NAIST)
2nd Author's Name Thi Hong Tran  
2nd Author's Affiliation Nara Institute of Science and Technology (NAIST)
3rd Author's Name Shinya Takamaeda  
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
Date Time 2015-12-02 12:05:00 
Presentation Time 25 
Registration for CPSY 
Paper # IEICE-CPSY2015-67 
Volume (vol) IEICE-115 
Number (no) no.342 
Page pp.33-38 
#Pages IEICE-6 
Date of Issue IEICE-CPSY-2015-11-24 


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