Dissertation > Excellent graduate degree dissertation topics show

Research on Hybrid Watermarking Resilient Against Copy Attack and Authenticating Legitimate Customer

Author: ZuoGuoCun
Tutor: LiTaoShen
School: Guangxi University
Course: Applied Computer Technology
Keywords: digital watermarking geometric attack watermarking protocol copy attack
CLC: TP309
Type: Master's thesis
Year: 2006
Downloads: 63
Quote: 1
Read: Download Dissertation

Abstract


Most of the watermarking applications use either of two kinds watermarking robust watermarking or fragile watermarking. The two most important applications copyright protection and content authentication one uses robust watermarking and the other uses fragile watermarking. In this paper, we try to use both kind of watermarking to build a hybrid watermarking, which uses robust watermarking to protect copyright and uses fragile watermarking to authenticate legitimate costumer and uses fragile watermarking to help copyright watermarking to combat copy attack.In order to realize such a watermarking, three jobs were finished in this paper: 1. A rotation, scaling, translation resilient watermarking algorithm was designed. In the method, log-polar transformation is used to eliminate the effect of scaling and translation because its invariance to scaling and translation. In the same time, log-polar is also used to clear the effect of rotation with the help of exhaustive search method. Experiments show it works well. 2. A semi-fragile watermarking based imagines · contents was designed. In this method, authentication sequences are derived from DCT coefficients and then embedded in DWT coefficients by quantization. Experiment results show the watermarking is robust against JPEG compression, medium filtering and adding Gauss noises but fragile to replacement attack. 3. An owner-customer watermarking protocol was improved. Owner-customer watermarking protocol has the ability to authenticate legitimate customer. After improved, it runs fast and can prevent legitimate costumer from leaking his secrets that will damage owner · s rights. Analyzing proves the goal was reached.

Related Dissertations

  1. Research on Contourlet Transform and Its Application on Image Processing,TP391.41
  2. Nonlinear color image watermarking detection program of study,TP309.7
  3. The Design and Implement of Highway Capture with Digital Watermarking Application,TP311.52
  4. Research and implementation of multi-resolution digital image watermarking algorithm based,TP309.7
  5. The Watermarking Technology Research of Raster Digital Maps Resisting Cropping Attacks,TP309.7
  6. The Study of Digital Raster Map Watermarking Based on Wavelet Analysis,TP309.7
  7. Digital Watermark Algorithm Based on Wavelet Transfomation,TP309.7
  8. Web tamper-proof system of centralized monitoring technology research,TP393.092
  9. The Research of Fragile Watermarking for Tamper Detection of Web Pages,TP393.092
  10. Study of Watermarking Technology Based on Two-Dimensional Barcode,TP309.7
  11. A Vector Map Digital Watermarking Algorithm Based on N-point Mean Value,TP309.7
  12. Research on Image Watermarking Against Geometric Attacks Based on Dual Transform Domains and Fractal,TP309.7
  13. Based on the digital watermark information hiding technology,TP309.7
  14. The Study of Binary Image Authentication Watermarking Based on Chaotic Maps,TP309.7
  15. Research and Implementation of MPEG-2 video digital watermarking,TP309.7
  16. Research and Implementation of multiple digital watermarking technology,TP309.7
  17. Research on the Approaches of Digital Audio Watermarking,TP309.7
  18. Error correction coding based on the digital watermark technology research,TP309.7
  19. Digital Image Watermark Technology Research Based on DCT Domain,TP309.7
  20. Research on Techniques of Image Digital Watermarking and Ability Evaluation,TP309.7
  21. Research on Copyright Protection of Digital Products Based on Robust Digital Watermarking Technology,TP309.7

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