Dr. Ryoichi Kawada Profile

Dr. Ryoichi Kawada

Head of R&D Program Management Section at KDDI R&D Labs Inc

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Publications (8)

Proceedings Article | 11 February 2011 Paper

Contrast-enhancing and deterministic tone mapping method in natural image hiding scheme using halftone images

Emi Myodo, Koichi Takagi, Ryoichi Kawada

Proceedings Volume 7880, 78800Z (2011) https://doi.org/10.1117/12.872709

KEYWORDS: Halftones, Image quality, Image processing, Visualization, Binary data, Image compression, Image forensics, Image enhancement, Diffusion, Transform theory

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Proceedings Article | 7 February 2011 Paper

Automatic image selection scheme utilizing comments for insertion of images into weblogs

Tomoaki Konno, Emi Myodo, Koichi Takagi, Ryoichi Kawada

Proceedings Volume 7879, 78790J (2011) https://doi.org/10.1117/12.872956

KEYWORDS: Image retrieval, Video, Image analysis, Internet, Luminescence, Image enhancement, Databases, Image acquisition, Electromagnetic coupling, Printing

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Proceedings Article | 19 February 2009 Paper

Evaluation of stereoscopic image quality for mobile devices using interpretation based quality methodology

Takashi Shibata, Shunsuke Kurihara, Takashi Kawai, Tsuyoshi Takahashi, Tomoyuki Shimizu, Ryoichi Kawada, Atsushi Ito, Jukka Häkkinen, Jari Takatalo, Göte Nyman

Proceedings Volume 7237, 72371E (2009) https://doi.org/10.1117/12.807080

KEYWORDS: 3D displays, 3D image processing, Mobile devices, Image quality, Visualization, 3D vision, Glasses, Large screens, Small screens, 3D visualizations

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Proceedings Article | 17 January 2006 Paper

Development of picture quality monitoring system for IPTV service based on the reduced reference framework

Osamu Sugimoto, Ryoichi Kawada, Atsushi Koike

Proceedings Volume 6059, 60590T (2006) https://doi.org/10.1117/12.644051

KEYWORDS: Video, Image transmission, Image quality, Feature extraction, Quality systems, Receivers, Video coding, Computer programming, Signal attenuation, Computing systems

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Proceedings Article | 17 January 2005 Paper

Method for remote monitoring of transmitted video quality using very low bitrate data circuit based on the reduced reference method

Osamu Sugimoto, Ryoichi Kawada, Atsushi Koike, Shuichi Matsumoto

Proceedings Volume 5668, (2005) https://doi.org/10.1117/12.588164

KEYWORDS: Image quality, Feature extraction, Video, Image transmission, Quantization, Error analysis, Image compression, Televisions, Computer simulations, Quality measurement

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Proceedings Article | 23 June 2003 Paper

Flat-scalable video communication for wireless transmission error tolerance

Ryoichi Kawada, Atsushi Koike, Masahiro Wada, Yoshinori Hatori

Proceedings Volume 5150, (2003) https://doi.org/10.1117/12.503250

KEYWORDS: Video, Video compression, Computer programming, Mobile communications, Error analysis, Tolerancing, Wireless communications, Interference (communication), Image compression, Image quality

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Proceedings Article | 23 June 2003 Paper

Method for precise detection of local impairment of coded video by use of reduced reference

Osamu Sugimoto, Ryoichi Kawada, Atsushi Koike, Masahiro Wada

Proceedings Volume 5150, (2003) https://doi.org/10.1117/12.510126

KEYWORDS: Feature extraction, Video, Digital filtering, Televisions, Error analysis, Video coding, Computer simulations, Quality measurement, Video compression, Defect detection

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Proceedings Article | 29 December 2000 Paper

Objective measurement scheme for perceived picture quality degradation caused by MPEG encoding without any reference pictures

Osamu Sugimoto, Ryoichi Kawada, Masahiro Wada, Shuichi Matsumoto

Proceedings Volume 4310, (2000) https://doi.org/10.1117/12.411876

KEYWORDS: Data hiding, Video, Quality measurement, Error analysis, Computer programming, Receivers, Eye, Image quality, Signal detection, Sensors

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Showing 5 of 8 publications

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