大関 和夫 OHZEKI KAZUO

ID:1000090317363

芝浦工業大学大学院工学研究科電気電子情報工学専攻 EEI Graduate School of Engineering, Shibaura Institute of Technology (2013年 CiNii収録論文より)

Search authors sharing the same name

Articles:  1-20 of 82

  • 1 / 5
  • A Robust Watermarking Method with Systematic Block Diffusion and DCT  [in Japanese]

    OHZEKI Kazuo , Bannai Kazutaka , Wei Yuan-yu , Hirakawa Yutaka , Sato Kiyotsugu

    The digital watermark has been taken as an element of security. Authors has proposed a systematic block diffusion digital-watermarking system, which at first, embeds watermark in a reduced block, then …

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 113(202), 65-70, 2013-09-12

  • A train delay detection method through the analysis of twitter messages  [in Japanese]

    新井 誠也 , 平川 豊 , 大関 和夫

    ディジタル図書館 (45), 20-27, 2013-09

    IR 

  • 13-9 Generate a clear complement image using the three-dimensional viewpoint intermediate image  [in Japanese]

    Makino Akinori , Hirakawa Yutaka , Ohzeki Kazuo

    I describe the process of removing unwanted object of image editing technology by computer. Removed using a three-dimensional viewpoint intermediate image which generated by performing averaging the p …

    PROCEEDINGS OF THE ITE WINTER ANNUAL CONVENTION 2013(0), 13-9-1-_13-9-2_, 2013

    J-STAGE 

  • 6-14 Fragmentation of smile expression  [in Japanese]

    Yasukawa Yosuke , Hirakawa Yutaka , Ozeki Kazuo

    Smile is a facial expression that is expressed when the emotion of joy came out. Smile to express different feelings. However, it is classified in the same category but different meaning. So I were cl …

    PROCEEDINGS OF THE ITE WINTER ANNUAL CONVENTION 2013(0), 6-14-1-_6-14-2_, 2013

    J-STAGE 

  • Consideration of an inversion attack to watermarking and a countermeasure with a rounding operation  [in Japanese]

    大関 和夫 , 魏 遠玉 , 平川 豊 [他]

    電子情報通信学会技術研究報告 : 信学技報 112(188), 37-42, 2012-08-27

  • Consideration of an inversion attack to watermarking and a countermeasure with a rounding operation  [in Japanese]

    OHZEKI Kazuo , WEI Yuan Yu , HIRAKAWA Yutaka , SATO Kiyostugu

    This paper considers the problem of inversion attack. We discuss the proposal of the fair position of a copyright owner and an attacker, the problem of the assumption of robustness, and the quantizati …

    電子情報通信学会技術研究報告. EMM, マルチメディア情報ハイディング・エンリッチメント = IEICE technical report. EMM, Enriched multimedia 112(190), 37-42, 2012-08-20

    References (15)

  • Consideration of an inversion attack to watermarking and a countermeasure with a rounding operation  [in Japanese]

    OHZEKI Kazuo , WEI YuanYu , HIRAKAWA Yutaka , SATO Kiyostugu

    This paper considers the problem of inversion attack. We discuss the proposal of the fair position of a copyright owner and an attacker, the problem of the assumption of robustness, and the quantizati …

    IEICE technical report. Life intelligence and office information systems 112(188), 37-42, 2012-08-20

    References (30)

  • Consideration of an inversion attack to watermarking and a countermeasure with a rounding operation  [in Japanese]

    OHZEKI Kazuo , WEI Yuan Yu , HIRAKAWA Yutaka , SATO Kiyostugu

    This paper considers the problem of inversion attack. We discuss the proposal of the fair position of a copyright owner and an attacker, the problem of the assumption of robustness, and the quantizati …

    IEICE technical report. Image engineering 112(189), 37-42, 2012-08-20

    References (15)

  • Consideration of an inversion attack to watermarking and a countermeasure with a rounding operation  [in Japanese]

    大関 和夫 , 魏 遠玉 , 平川 豊 [他]

    映像情報メディア学会技術報告 36(33), 37-42, 2012-08

  • D-21-4 Comparison of 1 and 2 Dimensional DCT Watermarking for a 3-D Method  [in Japanese]

    Wei Yuanyu , Kuraki Mao , Hirakawa Yutaka , Ozeki Kazuo , Sato Kiyotsugu

    Proceedings of the IEICE General Conference 2012年_情報・システム(2), 228, 2012-03-06

  • D-12-95 Real-time lane detection for linear and curved  [in Japanese]

    Nagasawa Takuya , Hirakawa Yutaka , Ohzeki Kazuo

    Proceedings of the IEICE General Conference 2012年_情報・システム(2), 189, 2012-03-06

  • D-12-92 Overtake Detection of Side Vehicles Using Video Sequence from In-Vehicle Cameras  [in Japanese]

    Kobayashi Jun , Shimada Hiroki , Hirakawa Yutaka , Ohzeki Kazuo

    Proceedings of the IEICE General Conference 2012年_情報・システム(2), 186, 2012-03-06

  • A New Watermarking Method with Block Diffusion and Biased-Chirp Transformation  [in Japanese]

    OHZEKI Kazuo , WEI Yuan-Yu , KURAKI Mao , HIRAKAWA Yutaka , SATO Kiyotsugu

    The digital watermark has been taken as an element of security. Systematic processing of embedding the difference between the original image value and extended watermark mean value. The robustness of …

    Technical report of IEICE. ISEC 111(455), 201-206, 2012-02-23

    References (5)

  • A New Watermarking Method with Block Diffusion and Biased-Chirp Transformation  [in Japanese]

    OHZEKI Kazuo , WEI Yuan-Yu , KURAKI Mao , HIRAKAWA Yutaka , SATO Kiyotsugu

    The digital watermark has been taken as an element of security. Systematic processing of embedding the difference between the original image value and extended watermark mean value. The robustness of …

    IEICE technical report. Information theory 111(454), 201-206, 2012-02-23

    References (5)

  • A New Watermarking Method with Block Diffusion and Biased-Chirp Transformation  [in Japanese]

    OHZEKI Kazuo , WEI Yuan-Yu , KURAKI Mao , HIRAKAWA Yutaka , SATO Kiyotsugu

    The digital watermark has been taken as an element of security. Systematic processing of embedding the difference between the original image value and extended watermark mean value. The robustness of …

    IEICE technical report. WBS, Wideband System 111(456), 201-206, 2012-02-23

    References (5)

  • 8-1 Analysis and detection of scrum scenes from rugby video  [in Japanese]

    YAMADA Kohei , Okada Kenji , HIRAKAWA Yutaka , OHZEKI Kazuo

    By image processing, shortening of a user's time is aimed at by extracting the highlight scene of Rugby automatically.

    PROCEEDINGS OF THE ITE WINTER ANNUAL CONVENTION 2012(0), 8-1-1, 2012

    J-STAGE 

  • A New Watermarking System with Obfuscated Embedder and Quasi-Chirp Transform  [in Japanese]

    大関 和夫 , 魏 遠玉

    本研究は,まず電子透かしの検出器を難読化してその動作を隠蔽する.次に,その難読化条件によって制約された埋込み方式に対し,埋込み手法の高能率化を図るために,DCT (離散コサイン変換) に変えて新たな Chirp 変換を開発する.この疑似 Chirp 変換は、1 個の変換後の係数に複数の周波数成分が含まれ、画像成分が分散される。圧縮とは異なり、埋込みには、分散することが効果的であり、例えば、平坦部で …

    情報処理学会研究報告 2010年度(6), 1-10, 2011-04

    Cited by (4)

  • A New Watermarking System with Obfuscated Embedder and Quasi-Chirp Transform  [in Japanese]

    大関 和夫 , 魏 遠玉

    本研究は,まず電子透かしの検出器を難読化してその動作を隠蔽する.次に,その難読化条件によって制約された埋込み方式に対し,埋込み手法の高能率化を図るために,DCT (離散コサイン変換) に変えて新たな Chirp 変換を開発する.この疑似 Chirp 変換は、1 個の変換後の係数に複数の周波数成分が含まれ、画像成分が分散される。圧縮とは異なり、埋込みには、分散することが効果的であり、例えば、平坦部で …

    情報処理学会研究報告 2010年度(6), 1-10, 2011-04

  • 表関数による難読化方式を用いた電子透かし埋込方式  [in Japanese]

    魏遠玉 , 大関和夫

    電子透かし検出器ソフトウェアを公開する際に、プログラムを難読化すると著作権を保護する効果がある。周波数変換と量子化を行う計算処理全体の難読化には、表関数を用いて演算処理をする。逆解析の計算は、入力と出力の関係が得られるにもかかわらず膨大なものとなる。表関数には、4次元の画像配列に対して、電子透かしを埋込む処理と検出する処理のプログラムを構成し、次に難読化したものを構成する。誤差評価、耐性評価などを …

    全国大会講演論文集 2011(1), 561-563, 2011-03-02

  • D-12-36 Feature Point Analysis Using Facial Parts for Face Recognition  [in Japanese]

    Tanaka Yasuko , Miyazaki Eigo , Ohzeki Kazuo

    Proceedings of the IEICE General Conference 2011年_情報・システム(2), 139, 2011-02-28

  • 1 / 5
Page Top