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Title page for etd-0728109-135845


URN etd-0728109-135845 Statistics This thesis had been viewed 1724 times. Download 4 times.
Author Po-Ming Hsu
Author's Email Address No Public.
Department Electrical Engineering
Year 2008 Semester 2
Degree Master Type of Document Master's Thesis
Language English Page Count 86
Title REVERSIBLE DATA HIDING BASED ON DIFFERENCE BLOCK DIVISION METHOD
Keyword
  • prediction
  • difference value
  • integer transform
  • histogram shifting
  • histogram shifting
  • integer transform
  • difference value
  • prediction
  • Abstract This thesis presents two reversible data hiding methods. The first reversible data hiding method embeds data used on integer transform and histogram shifting. The inverse transform exploits the correlations among adjacent pixels in an image. We calculate the mean and difference values of the adjacent pixels. We use different block of size and overlapping two layer difference value of histogram, not only we can embed data into the image, but also data capacity is better. So the object of data hiding is arrived. The second reversible data hiding method embeds data used on prediction and histogram. We divide difference block size that pixel values slightly to embed data into the image. Experimental results know that our capacity is better payload and PSNR. After the data hidden data have been extracted, the image can recover without any distortion.
    Advisor Committee
  • Ming-Chieh Tsai - advisor
  • none - co-chair
  • none - co-chair
  • Files indicate not accessible
    Date of Defense 2009-07-17 Date of Submission 2009-07-28


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