Title: Text digital water printing technology based on character topoloical structure
Application Number: 200510065893 Application Date: 2005.04.20
Publication Number: 1684115 Publication Date: 2005.10.19
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G09C1/00
Applicant(s) Name: Liu Dong Address: 610074
Inventor(s) Name:
Attorney & Agent:
Abstract:
     The present invention provides a digital text watermark technology based on topological character structure and has the basic principle that by means of altering the topological structure of character, different character fonts with the same semanteme are designed and properly coded to carry digital watermark information. The present invention includes several methods of designing character font and coding character font and watermark forming and detecting technology. The digital text watermark technology of the present invention has the features of less visual influence, simple and reliable detection, high robustness, great watermark information capacity, etc.
Time: 38