CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 4925 > Article
Paper
30 August 2002 Image authentication with a time-stamped signature of the image and secret key encryption
Ju-Yun Cheng, Long-Wen Chang
Author Affiliations +
Proceedings Volume 4925, Electronic Imaging and Multimedia Technology III; (2002) https://doi.org/10.1117/12.481573
Event: Photonics Asia, 2002, Shanghai, China
Abstract
Most Watermarking in copyright protection is usually concentrated on how to=make the=watermark robust to resist= any intetional or unintentional attacks. They often do not consider how to resolve the rightful ownership if several= watermarks are detected.= In this paper,=we use the block wavelet transform that is included in the compression standard ? jpeg=2000=to= compute=coefficients.= The image=is partitioned into non-overlapped=blocks and then=each=block is decomposed=into 10= subbands. For each block, we find a list of significant wavelet coefficients to embed the watermark. Then, we use a= cryptography=algirithm=rc6 to select the coefficients=from=the=list of significant=wavelet=coefficients=for watwrmarking.= Finally,=we=embed=the watermark=in the=image.=The purpose of using=the encryption=algorithm=is=that=the watermarking= algorithm can be public while the wavelet coefficients for embedding the watermark can be known only through the= secrete key of the encryption algorithm.=
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Ju-Yun Cheng and Long-Wen Chang "Image authentication with a time-stamped signature of the image and secret key encryption", Proc. SPIE 4925, Electronic Imaging and Multimedia Technology III, (30 August 2002); https://doi.org/10.1117/12.481573
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 8 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Lithium
Image encryption
Symmetric-key encryption
Electronic imaging
Multimedia
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top