Using quad smoothness to efficiently control capacity–distortion of reversible data hiding Chi-Nan Lin, Daniel J. Buehrer, Chin-Chen Chang, Tzu-Chuen Lu.

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Presentation transcript:

Using quad smoothness to efficiently control capacity–distortion of reversible data hiding Chi-Nan Lin, Daniel J. Buehrer, Chin-Chen Chang, Tzu-Chuen Lu The Journal of Systems and Software 日期 :3.28 報告者 : 許睿中

Outline Related works The proposed scheme Experimental results Conclusion

Related works-Tian’s method Embedding h=5h’=

Related works-Tian’s method Extraction

Related works-Alattar’s method ab cd a’b’ c’d’ cover pixelsstego pixels Embedding

Related works-Alattar’s method a’b’ c’d’ ab cd Extraction recover pixels stego pixels

The proposed scheme

a1a2b1b2 a3a4b3b4 c1c2d1d2 c3c4d3d4 The proposed scheme

Experimental results

Embedding bits with Alattar’s versus the propose method.

Experimental results Stego-lena512.gif PSNR=31.8 payload= Stego-baboon512.gif PSNR=21.2 payload=179918

Conclusion This proposed methods enhances Alattar’s work in term of effectively controlling the capacity versus distortion behavior.