Atsuki TOMIOKA


Digital Watermarking Technique for Motion Pictures Based on Quantization
Hiroshi OGAWA Takao NAKAMURA Atsuki TOMIOKA Youichi TAKASHIMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/01/25
Vol. E83-A  No. 1  pp. 77-89
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
motion picture watermarkingadaptive quantizationreliabilitysoft decisionMPEG
 Summary | Full Text:PDF(1.3MB)

Improved Digital Watermark Robustness against Translation and/or Cropping of an Image Area
Takao NAKAMURA Hiroshi OGAWA Atsuki TOMIOKA Youichi TAKASHIMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/01/25
Vol. E83-A  No. 1  pp. 68-76
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
digital watermarkimage processingorthogonal transformspread spectrumcopyright protection
 Summary | Full Text:PDF(2.8MB)