Shoko IMAIZUMI


An Encryption-then-Compression System for Lossless Image Compression Standards
Kenta KURIHARA Shoko IMAIZUMI Sayaka SHIOTA Hitoshi KIYA 
Publication:   
Publication Date: 2017/01/01
Vol. E100-D  No. 1  pp. 52-56
Type of Manuscript:  Special Section LETTER (Special Section on Enriched Multimedia —New Technology Trends in Creation, Utilization and Protection of Multimedia Information—)
Category: 
Keyword: 
Encryption-then-Compression systemlossless compressioninternational standardJPEG XRJPEG-LS
 Summary | Full Text:PDF(928.6KB)

An Encryption-then-Compression System for JPEG/Motion JPEG Standard
Kenta KURIHARA Masanori KIKUCHI Shoko IMAIZUMI Sayaka SHIOTA Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/11/01
Vol. E98-A  No. 11  pp. 2238-2245
Type of Manuscript:  Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: 
Keyword: 
Encryption-then-Compression systemperceptual encryptionJPEGcolor imagecryptographic hash function
 Summary | Full Text:PDF(5.5MB)

Encryption of Composite Multimedia Contents for Access Control
Masaaki FUJIYOSHI Shoko IMAIZUMI Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/03/01
Vol. E90-A  No. 3  pp. 590-596
Type of Manuscript:  Special Section PAPER (Special Section on Multimedia and Mobile Signal Processing)
Category: Image
Keyword: 
multimedia communicationaccess controlcryptographyimage codingInternet
 Summary | Full Text:PDF(807.3KB)