scispace - formally typeset
Search or ask a question

Showing papers by "Wen-Hsiang Tsai published in 2005"


Proceedings ArticleDOI
01 Dec 2005
TL;DR: New methods for automatic generation of stained glass images as well as for data hiding in such images are proposed and a complete process for secret communication using the above technique is also proposed.
Abstract: New methods for automatic generation of stained glass images as well as for data hiding in such images are proposed. Glass regions in stained glass images are generated by randomly sprinkled seeds and a region growing technique. The number of nodes of a tree constructed for pixel grouping in a glass region is used for data hiding in a stained glass image. A complete process for secret communication using the above technique is also proposed. Experimental results show the feasibility of the proposed methods.

1 citations


Proceedings ArticleDOI
27 Jun 2005
TL;DR: A block signature method is proposed that generates context-sensitive block signatures for an authoritative message, and allows quotation signatures to be generated on-the-fly for arbitrary sub passages by an anonymous author.
Abstract: Traditional message authentication does not verify the integrity and the claimed source of quotations in an anonymous message. A new active quotation authentication framework is proposed that allows a reader to authenticate the content and origin of the quotations in a citing document. A block signature method is proposed that generates context-sensitive block signatures for an authoritative message, and allows quotation signatures to be generated on-the-fly for arbitrary sub passages by an anonymous author. The block signature method requires a small initial computational effort and storage requirement for block signature generation; has a small quotation signature overhead; and is efficient for quotation authentication.

1 citations


Proceedings ArticleDOI
27 Jun 2005
TL;DR: An overview of the Advanced Technologies and Applications of Next Generation Information Communication Networks project is given and some of the major achievements are highlighted.
Abstract: The project, "Advanced Technologies and Applications of Next Generation Information Communication Networks," is a four-year, multi-disciplinary research project sponsored by the Ministry of Education, R.O.C., under the "Program for Promoting Academic Excellence of Universities." The project started in January 2000 and completed in March 2004. In this paper, we give an overview of the project and highlight some of the major achievements.