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Video Watermarking and Capacity Analysis: Information Theoretic Approach

Khalilian, Hanieh | 2009

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 39242 (05)
  4. University: Sharif University of Technology
  5. Department: ELectrical Engineering
  6. Advisor(s): Ghaemmaghami, Shahrokh
  7. Abstract:
  8. Data hiding in digital media has been widely investigated over the past decade because of covering different crucial applications. Amongst digital multimedia signals, video has been received a special attention and data hiding in video signals has reached a significant improvement in recent years. This thesis aims at introducing an information theoretic based analysis method for calculating the capacity of data hiding in video signals, as one of most challenging issues in this area. This analysis is expected to establish a reasonable basis for the design and analysis of data hiding algorithms. We study and investigate the data hiding problems that could be specific to video signals and its theoretical model. Video modeling is a complex process due to its temporal variations and dimensionalities. To cope with this problem, temporal dimension of video signal is taken individually in this thesis, and then the signal is modeled as a sequence of still images for estimating the hiding capacity. In addition to computing the data hiding capacity, a video watermarking algorithm is proposed in this thesis, in which the data is embedded in the 3-D Ridgelet domain. Simulation results show that this algorithm is robust against several attacks, including collusion, compression, noise addition, frame dropping, frame swapping, and frame cropping
  9. Keywords:
  10. Data Hiding ; Human Visual System ; Video Data ; Information Theory ; Video Watermaking ; Three Dimentional Ridgelet Transform

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