Dissertation > Excellent graduate degree dissertation topics show

Contourlet Domain Image Watermarking Algorithm

Author: ZhouBing
Tutor: ChenDongFang
School: Wuhan University of Science and Technology
Course: Applied Computer Technology
Keywords: Digital watermarking Contourlet Transform Sift Quantify
CLC: TP309.7
Type: Master's thesis
Year: 2009
Downloads: 115
Quote: 5
Read: Download Dissertation

Abstract


With the development of multimedia and the rapid development of Internet , digital document security to become an important and challenging research topic. Digital watermarking technology as a potential solution to protect digital copyright has been more and more attention, become hot research field of information security . This paper describes the digital watermarking technology research background and significance of this paper describes the main work , on this basis , further introduce the concept of digital watermarking technology , characteristics, classification, application , principles and general model of digital watermarking and typical algorithms, and introduces a new multi- resolution analysis algorithm, namely Contourlet transform . The current status of research and development , the author gives two kinds of digital image watermarking algorithm. The first algorithm will first conduct three Contourlet transform host image , and then the human visual model , select the relevant embedding factor of the scrambled watermark after quantization method based mold watermark embedding and extraction. Experimental results show that the algorithm for compression, smoothing, sharpening and shearing attack has better robustness. The second algorithm is based sift transformations. First, the host image for secondary Contourlet decomposition scrambling the watermark is encrypted using spread spectrum technology , the encrypted watermark spreading processing , neighborhood mean Finally the watermark embedding method Contourlet-domain coefficients . Experimental results show that the algorithm for rotation, scaling , etc. with good robustness.

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. Simulation Research on Fault Detection Methods of Networked Control Systems,TP273
  4. Wearable ECG Signal Quality Comprehensive Evaluation and Rhythm Analysis System,TN911.7
  5. Research of Distributed Video Coding Based on Compressed Sensing,TN919.81
  6. The Design and Implement of Highway Capture with Digital Watermarking Application,TP311.52
  7. SIFT-based digital watermarking algorithm,TP309.7
  8. Based on the geometry of multiple images and textures automatically rebuild,TP391.41
  9. Blackberry mobile phone operating system based on Security Mechanism,TP309.7
  10. Iris feature -based digital watermarking algorithm,TP309.7
  11. Based on the H.264 standard video watermarking technology in the network learning platform in the Application and Implementation,TP309.7
  12. Digital watermarking based on neural network algorithm and implementation,TP309.7
  13. Based on compressed sensing reconstruction algorithm,TN911.7
  14. Chaotic systems based digital image watermarking algorithm,TP309.7
  15. Visible and infrared image fusion algorithm,TP391.41
  16. Multi-spectral remote sensing image registration and fusion research,TP751
  17. Ruangan poultice treatment of primary biliary cirrhosis clinical research,R259
  18. Research on Mobile Manipulator Localization Based on SIFT Algorithm Combining Binocular and Monocular Visual,TP241
  19. Image fusion method based on variational partial differential equations,TP391.41
  20. Geometrically Robust Image Watermarking Algorithm,TP309.7
  21. SVD -based digital watermarking algorithm,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