Dissertation > Excellent graduate degree dissertation topics show

A Vector Map Digital Watermarking Algorithm Based on N-point Mean Value

Author: LiCunWei
Tutor: MenChaoGuang
School: Harbin Engineering University
Course: Applied Computer Technology
Keywords: copyright protection digital watermarking vector map n-point mean value pretreatment
CLC: TP309.7
Type: Master's thesis
Year: 2010
Downloads: 18
Quote: 0
Read: Download Dissertation

Abstract


With the development of information technology and the need of national construction, the applications of geographic information data products expand continuously, and the number of the products keeps a rapid growth. So how to verify the copyright of these data products has become a problem which is an urgent need to be solved in digital mapping production. Digital watermarking has been increasingly applied as an important means of digital product certification and copyright. However, the present vector map watermarking algorithms are immature than the image watermarking algorithms. Therefore, the research of vector map digital watermarking technology has important theoretical and practical significance.This paper introduces the background,the conceptions and applications of digital watermarking, analyzes of the structure of vector map and discusses in detail vector map watermarking algorithm involved in a number of key techniques, such as n-point mean value technique, watermark pretreatment and so on.The current reversible watermarking algorithms of vector map always cause higher distortions, and the watermarking capacity of these algorithms is very limited. Combining with the characteristics of the vector map structure, a n-point mean value technique is proposed in this paper and watermark embedding in the vector line (or region) can be implemented well by the proposal. In addition, a vector map watermarking algorithm based on the n-point mean value technique is presented. This algorithm achieves a higher payload and lower distortions in the maps. Experimental results show that the algorithm has the ability to recover the original cover data, is able to ensure the data accuracy of the vector map embedded the watermark, and meets the need of the copyright protection and copy tracking.

Related Dissertations

  1. Research on the Detection of Petechia in Tongue Images,TP391.41
  2. Process and Mechanism of Eucalyptus Pulp Bleaching Catalysed by Cu2+/Co2+,TS745
  3. Cellulose Pretreatment with Ionic Liquid for Enzymatic Hydrolysis,TQ352.1
  4. Studies on Optimization Technology of Fermentation with Corn Straw and Cow Dung Mixed Material,S216.4
  5. Based on Rough Set of Urban Areas When Traffic Green Control System Research,TP18
  6. Study on Advanced Oxidation Technology of Ozonation for Berberine Pharmaceutical Wastewater Treatment,X787
  7. Research on Image Digital Watermarking Technology Based on CUDA,TP309.7
  8. Researches and Application on PKI and Digital Watermarking in the Electronic Seal System,TP309.7
  9. Based on Contourlet Transform Digital Watermarking Method,TP309.7
  10. Effect of H2 O2 Pretreatment of Autologous Mesenchymal Stem Cells Transplantation on Ventricular Remodeling After Acute Myocardial Infarction,R542.22
  11. Network literature research its copyright protection mode,D923.41
  12. Research on Contourlet Transform and Its Application on Image Processing,TP391.41
  13. The Silylation Modification of Diatomite and Its Influence on the Cu(Ⅱ) Adsorption Performance,O647.32
  14. Effects of Extraction Yield, Structure, and Properties of Polysacchardes from Lentinus Edodes by Dynamic High-pressure Microfluidization Pretreament,TS219
  15. Research of Watermarking Algorithm for Color Code Image,TP309.7
  16. The Research on Digital Watermarking Technology for Relational Database,TP309.7
  17. The Research and Application of 3G WebMapper Platform Based on SOA,P208
  18. The Research on Transformed Craft of Bioligical Ethanolof Low Value Seaweed Enteromorpha Prolifera,TQ223.122
  19. The Analysis of the Copyright Protection Mode of the Online Games,D923.41
  20. Nonlinear color image watermarking detection program of study,TP309.7
  21. Researching of Image Digital Watermarking Algorithm Based on the DCT Domain,TP309.7

CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > General issues > Security and confidentiality > Encryption and decryption
© 2012 www.DissertationTopic.Net  Mobile