首頁 > 網路資源 > 大同大學數位論文系統

Title page for etd-0829104-115109


URN etd-0829104-115109 Statistics This thesis had been viewed 1863 times. Download 11 times.
Author Bin-Yuan Huang
Author's Email Address No Public.
Department Computer Science and Enginerring
Year 2003 Semester 2
Degree Master Type of Document Master's Thesis
Language English Page Count 107
Title A Copyright Protection Scheme for Gray-Level Images Based on Image Secret Sharing and Wavelet Transformation
Keyword
  • watermark
  • copyright protection
  • discrete wavelet transformation
  • image secret sharing
  • image secret sharing
  • discrete wavelet transformation
  • copyright protection
  • watermark
  • Abstract A copyright protection scheme for gray-level images based on image secret sharing and wavelet transformation is proposed in this thesis. The scheme contains a secret image generation phase and a watermark retrieval phase. In the generation phase, the scheme extracts the features from a host image using the discrete wavelet transformation (DWT), and then uses the features and the watermark, a visually recognizable pattern, to generate the secret image using the image secret sharing (ISS). In the retrieval phase, the watermark is retrieved by combining the secret image and the features obtained from the suspect image. The retrieved watermark is then compared with the original watermark for checking copyright.
       The experimental results show that the scheme can withstand 11 kinds of common image processing operations, including JPEG compression, varied noise adding, uniform noise adding, blurring, sharpening, averaging, brightness adjustment, contrast adjustment, scaling, cropping, and equalization.
    Advisor Committee
  • Shang-Lin Hsieh - advisor
  • none - co-chair
  • none - co-chair
  • Files indicate in-campus access only
    Date of Defense 2004-07-26 Date of Submission 2004-08-29


    Browse | Search All Available ETDs