Digital watermarking through CDMA channels using spread spectrum techniques

Author

Kohda, T. ; Ookubo, Y. ; Shinokura, K.

Author_Institution

Dept. of Comput. Sci. & Commun. Eng., Kyushu Univ., Fukuoka, Japan

Volume

2

fYear

2000

fDate

2000

Firstpage

671

Abstract

In image transmission systems using spread spectrum (SS) techniques, the main problem is how to transmit an image whose information is huge, efficiently. We have already proposed a color image communication system through code division multiple access (CDMA) channels with spreading sequences of variable-period to transmit YIQ signals. We propose a digital watermarking system where YIQ signal channels and the embedded watermark image channel are separately used. Such a system has two advantages: (1) interception on communications network is prevented; and (2) the copyright of rightful owner of digital images is protected

Keywords

code division multiple access; copy protection; copyright; data compression; image coding; image colour analysis; multiuser channels; security of data; spread spectrum communication; telecommunication security; visual communication; CDMA channels; JPEG compression; JPEG smoothing; YIQ signal channels; code division multiple access; color image communication system; communications network interception prevention; computer network; copyright protection; digital watermarking; image transmission systems; spread spectrum techniques; variable-period spreading sequences; watermark image channel; Color; Digital images; Discrete cosine transforms; Image coding; Image communication; Multiaccess communication; Protection; Spread spectrum communication; Time division multiple access; Watermarking;

fLanguage

English

Publisher

ieee

Conference_Titel

Spread Spectrum Techniques and Applications, 2000 IEEE Sixth International Symposium on

Conference_Location

Parsippany, NJ

Print_ISBN

0-7803-6560-7

Type

conf

DOI

10.1109/ISSSTA.2000.876518

Filename

876518