Ayuko TAKAGI

Scrambling of MPEG Video by Exchanging Motion Vectors
Ayuko TAKAGI Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/08/01
Vol. E87-A  No. 8  pp. 2054-2057
Type of Manuscript:  Special Section LETTER (Special Section on Digital Signal Processing)
Category: Image/Visual Signal Processing
Keyword: 
MPEG video, image scrambling, motion vector, 
 Summary | Full Text:PDF
Lossless Video Coding Using Interleaved Multiple Frames
Ayuko TAKAGI Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/06/01
Vol. E86-A  No. 6  pp. 1504-1508
Type of Manuscript:  Special Section LETTER (Special Section on Papers Selected from 2002 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2002))
Category: 
Keyword: 
JPEG2000, Motion JPEG 2000, lossless video coding, interleaved multiple frames, 
 Summary | Full Text:PDF
QCIF Video Coding Based on JPEG2000 Using Symmetry of Images
Ayuko TAKAGI Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/08/01
Vol. E85-A  No. 8  pp. 1898-1901
Type of Manuscript:  Special Section LETTER (Special Section on Digital Signal Processing)
Category: Image/Visual Signal Processing
Keyword: 
JPEG2000, MotionJPEG2000, symmetric extension, QCIF, video encoding, 
 Summary | Full Text:PDF
Motion Estimation Using Edge Enhanced Low-Bit Images for Lowpower MPEG Encoder
Ayuko TAKAGI Kiyoshi NISHIKAWA Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/08/01
Vol. E84-A  No. 8  pp. 1900-1908
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: Image/Visual Signal Processing
Keyword: 
low power, motion estimation, MPEG, low-bit image, edge enhancement, 
 Summary | Full Text:PDF
Motion Estimation with Power Scalability and Its VHDL Model
Ayuko TAKAGI Shogo MURAMATSU Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/08/25
Vol. E83-A  No. 8  pp. 1608-1613
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: Implementations of Signal Processing Systems
Keyword: 
low power, motion estimation, MPEG, less gray level image, 
 Summary | Full Text:PDF
A Method of Inserting Binary Data into MPEG Video in the Compressed Domain
Hitoshi KIYA Yoshihiro NOGUCHI Ayuko TAKAGI Hiroyuki KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/08/25
Vol. E82-A  No. 8  pp. 1485-1492
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
inserting binary data, MPEG, digital library, watermarking, 
 Summary | Full Text:PDF