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離散小波 - 離散餘弦 - 奇異質分解 的浮水印 DWT-DCT-SVD Based Watermarking

Jan 06, 2016

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離散小波 - 離散餘弦 - 奇異質分解 的浮水印 DWT-DCT-SVD Based Watermarking. 指導教授 陳炳彰 M99F0211 鍾依伶. 2008.01. Navas K A a , Ajay Mathews Cheriyan b ,Lekshmi.M b , Archana Tampy.S c , Sasikumar M d a Asst Professor, b UG Student, b PG Student, d Professor (Retd.) - PowerPoint PPT Presentation

  • --DWT-DCT-SVD Based Watermarking

    M99F0211

  • Navas K Aa, Ajay Mathews Cheriyanb,Lekshmi.Mb, Archana Tampy.Sc, Sasikumar MdaAsst Professor, bUG Student, bPG Student, dProfessor (Retd.) Electronics and Communication Engineering Dept. College of Engineering Trivandrum Kerala, India 2008.01

  • M

  • s s s

  • JPEGJPEG2000DCTDWT

  • SVD(M)M= U VMmnUmmmnVnn

  • (DCT)

    DCT B1( B4( B1 B4

  • (DWT)

    SVDDWT

    LLHH

  • DWT-DCT- SVD

    DCT DCT

  • DWT-DCT- SVDB

    B = UBBVBT where UB and VB T S = USSVST where US and VST

    DWTLLHLLHHH DCTSDCT SVDSUSVSTS SVDSDCT(IDCT)

  • DWT-DCT- SVDC

    B = UBBVBT where UB and VBT

    B(DCT)B(SVD)

    B = UA*A*VA*T where UA* and VA*T

    (DWT) (DCT)A (SVD)

    ,

  • 256x256128x128

    1ab 2ab

  • JPEG

    3 a b cJPEG d

  • DWT- DCT-SVD

    2. LLHH

    3. DCT

  • 4 5SVD

  • DCTSVD

  • END