| Presentation | 2016-03-02 [Poster Presentation] A Fundamental Study on Application of Coded Aperture to Digital Watermark Extraction Kentaro Nakai, Takeru Maehara, Toshiki Sonoda, Michihiro Mikamo, Hiroshi Kawasaki, Hajime Nagahara, Satoshi Ono, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Digital image watermark extraction requires an in-focus shot because focus blur destroys watermark component.Therefore, this paper attempts to apply a coded aperture to watermark extraction from blurred images.Unlike a conventional circular aperture, a coded aperture is an aperture encoded with a two-dimensional mask.In general, it intends to prevent loss of certain frequency range and is used for stable postprocessing such as deblurring and depth estimation.It is also expected that appropriately designed coded aperture will prevent watermark component vanishing by focus blur.This paper proposes a design method of coded aperture for digital image watermark extraction by simulation using genetic algorithm.In addition, this paper shows the effectiveness of capturing with the coded aperture designed by the proposed method with real devices. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | coded aperture / digital watermarking / genetic algorithm / simulation |
| Paper # | EMM2015-88 |
| Date of Issue | 2016-02-24 (EMM) |
| Conference Information | |
| Committee | EMM |
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| Conference Date | 2016/3/2(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Yakushima Environ. and Cultural Vill. Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Image and Sound Quality, Metrics for Perception and Recognition, Human Auditory and Visual System, etc. |
| Chair | Akinori Ito(Tohoku Univ.) |
| Vice Chair | Masashi Unoki(JAIST) / Masaki Kawamura(Yamaguchi Univ.) |
| Secretary | Masashi Unoki(Univ. of Electro-Comm.) / Masaki Kawamura(Nagasaki Univ.) |
| Assistant | Motoi Iwata(Osaka Pref. Univ.) / Kazuhiro Kohno(Kansai Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Enriched MultiMedia |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Poster Presentation] A Fundamental Study on Application of Coded Aperture to Digital Watermark Extraction |
| Sub Title (in English) | |
| Keyword(1) | coded aperture |
| Keyword(2) | digital watermarking |
| Keyword(3) | genetic algorithm |
| Keyword(4) | simulation |
| 1st Author's Name | Kentaro Nakai |
| 1st Author's Affiliation | Kagoshima University(Kagoshima Univ.) |
| 2nd Author's Name | Takeru Maehara |
| 2nd Author's Affiliation | Kagoshima University(Kagoshima Univ.) |
| 3rd Author's Name | Toshiki Sonoda |
| 3rd Author's Affiliation | Kyushu University(Kyushu Univ.) |
| 4th Author's Name | Michihiro Mikamo |
| 4th Author's Affiliation | Kagoshima University(Kagoshima Univ.) |
| 5th Author's Name | Hiroshi Kawasaki |
| 5th Author's Affiliation | Kagoshima University(Kagoshima Univ.) |
| 6th Author's Name | Hajime Nagahara |
| 6th Author's Affiliation | Kyushu University(Kyushu Univ.) |
| 7th Author's Name | Satoshi Ono |
| 7th Author's Affiliation | Kagoshima University(Kagoshima Univ.) |
| Date | 2016-03-02 |
| Paper # | EMM2015-88 |
| Volume (vol) | vol.115 |
| Number (no) | EMM-479 |
| Page | pp.pp.69-74(EMM), |
| #Pages | 6 |
| Date of Issue | 2016-02-24 (EMM) |