Use of Gap-Filling Operation to Enhance Image Quality of Binary Image Watermarking. - Ryu Ebisawa; Yasuhiro Fujii; Takaaki Yamada; Satoru Tezuka; Isao Echizen (IIH-MSP, 2007)

Third-party approach to controlling digital copiers. - Yasuhiro Fujii; Ryu Ebisawa; Yumiko Togashi; Takaaki Yamada; Yoshinori Honda; Seiichi Susaki (iiWAS, 2008)

Evaluation of Integrity Verification System for Video Content Using Digital Watermarking. - Takaaki Yamada; Yoshiyasu Takahashi; Yasuhiro Fujii; Ryu Ebisawa; Hiroshi Yoshiura; Isao Echizen (New Directions in Intelligent Interactive Multimedia, 2008)

Evaluation of Audio Watermark System Using Short Detection Time Frame. - Takaaki Yamada; Yoshiyasu Takahashi; Ryu Ebisawa; Yoshinori Sato; Seiichi Susaki (IIH-MSP, 2009)

High-accuracy text search of hardcopy logs. - Yasuhiro Fujii; Ryu Ebisawa; Satoshi Kai; Takaaki Yamada; Yoshinori Honda (iiWAS, 2009)

Integrity verification method for video content using robust watermarking. - Takaaki Yamada; Yoshiyasu Takahashi; Yasuhiro Fujii; Ryu Ebisawa; Hiroshi Yoshiura; Isao Echizen (Int. J. Knowl. Based Intell. Eng. Syst., 2009)

Development of digital watermarking application technologies for newspapers. - Ryu Ebisawa; Takaaki Yamada (ICASSP, 2010)