Dissertation > Excellent graduate degree dissertation topics show

Research on Video Watermarking Scheme Based on Local Pseudo-Zernike Moments

Author: ZuoChangHao
Tutor: GuoBaoLong
School: Xi'an University of Electronic Science and Technology
Course: Control Theory and Control Engineering
Keywords: Video Watermarking Geometric attacks Pseudo-Zernike moments Optimal Moments collection
CLC: TP309.7
Type: Master's thesis
Year: 2009
Downloads: 146
Quote: 0
Read: Download Dissertation


The technology of the digital watermark (Digital Watermarking) identification information (digital watermark) is embedded directly into the digital carrier (including multimedia, documentation, software, etc.), which does not affect the original vector value in use, the information can not be easily removed. Basis guarantee invisibility can be attacked with a dedicated watermark extraction algorithm detected the information. This paper systematically reviewed digital video watermarking research significance, research status, the main features and key technologies. In-depth study of the principles and algorithms of traditional digital video watermarking technology, analyze their strengths and weaknesses, and combine the image moment theory to study in detail the moment theory in the field of digital video watermarking technology. Tiny geometric attack (rotation, scaling and translation) the destruction of the image or video watermark, the watermark detection failed, therefore, designed to resist geometric attacks video watermarking algorithm watermarking technology research in a new direction. For rotation, scaling and translation (RST) geometric attacks can destroy the synchronization of the watermark detection, leaving the problem of failure of conventional watermark detection, a local pseudo-Zernike moments video watermarking algorithm LPZVW of (Video Watermarking in Scheme Based on local Pseudo-ZernikeMoments). The algorithm uses the normalized amplitude image pseudo-Zernike moments RST invariant nature, select the origin to the center of the image, the image width of 1/4 of the radius of the circle as the watermark embedding area, thereby reducing the attack brought about due to the rotation The edge of the impact, the moment rotational invariance. Combine video interframe high similarity, select the I frame and adjacent the P frame difference pseudo-Zernike moments as the optimal moment to set S, will be pseudo-Zernike moments reconstructed watermark image in airspace superimposed onto I-frame local to embed watermark. Watermark detection, to the best moments of the set S as the key to calculate pseudo-Zernike moments in the local area, I frame watermarked adjacent P frame pseudo-Zernike moments replacing the original I frame data extraction and detection watermark to improve the algorithm on the original data dependence. The experimental results show that the pseudo-Zernike moments using local video watermarking algorithm than using the global pseudo-Zernike moments in the guarantee to get better image quality, better rotation invariance attack any angle of rotation, scaling attack geometric attacks with good robustness.

Related Dissertations

  1. Research on Reversible Video Data Hiding Based on H.264/avc Standard,TN919.81
  2. Research and Realization on Video Watermarking Techniques,TP309.7
  3. A Video Watermarking Scheme Based on Motion Vectors,TP309.7
  4. Digital video watermarking algorithm based on chaotic sequence,TP309.7
  5. Video Watermarking Schemes and Its Applications for Broadcasting Business,TN94
  6. Application Research on P2P Live Streaming Media Based on Watermarking Technology,TP309.7
  7. Research of Information Hiding for Video and Application on Biometric Identification,TP309.7
  8. Research and Implementation of MPEG-4 video watermarking technology,TP309
  9. Research on the H.264-Based Video Encryption and Watermarking Technology,TN919.81
  10. Based on human visual system (HVS) digital video watermarking algorithm,TP309.7
  11. Research on Watermarking Algorithms in Video Coding,TP309.7
  12. Research on Video Watermarking Technology Based on Contourlet and Independent Component Analysis,TP309.7
  13. Design of Mobile Video Watermarking System,TP309.7
  14. Digital Video Watermarking Algorithm Based on Motion Vectors for AVS,TP391.41
  15. Design of Video Watermarking in the Transcoding System,TP309.7
  16. Digital watermarking for copyright protection of multimedia teaching resources,TP309.7
  17. Compressed Domain Fragile Video Watermarking,TN919.81
  18. The Research of Video Watermarking Based on H.264 and JND Model,TP309.7
  19. Study on Video Digital Watermarking Technology Based on LDPC Codes,TP309.7
  20. Research on Video Watermarking Technology Against Resolution Downsampling Transcoding,TP309.7
  21. The Design and Implementation of the Procuratorate synchronized audio and video recording systems integration,TN946

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