Title: A safety multifunctional image digital watermark system
Application Number: 200610136788 Application Date: 2006.12.01
Publication Number: 1963865 Publication Date: 2007.05.16
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G06T1/20
Applicant(s) Name: Central South University Address:
Inventor(s) Name: Chen Zhigang;Zhu Congxu
Attorney & Agent: huyan yu
Abstract:
    This invention relates to electron digital watermark technique, which is characterized by the following: imbedding visible water mark in digital images to realize edit inform with imbed system controlled by three-dimensional chaotic system sequence, wherein, the image with water mark is imbedded with one invisible water mark to image edit protection to realize random selection by three dimensional chaotic system and using double parameters method to lift wavelet low frame parameter imbedding.
Time: 8