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Data hiding method using image interpolation

Data hiding method using image interpolation. Source:Computer Standards & Interfaces 31 (2009) 465–470 Authors:Ki-Hyun Jung & Kee-Young Yoo Speaker:Jiun-Lwen Liang Date:2012/05/22. Outline. Introduction Interpolation method Proposed scheme

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Data hiding method using image interpolation

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  1. Data hiding method using image interpolation Source:Computer Standards & Interfaces 31 (2009) 465–470 Authors:Ki-Hyun Jung & Kee-Young Yoo Speaker:Jiun-Lwen Liang Date:2012/05/22

  2. Outline • Introduction • Interpolation method • Proposed scheme • Experimental results • Conclusions

  3. Introduction • This paper introduces a traditional scaling-up method and a new interpolation method is proposed; one that focuses on high speed and low complexity.

  4. Interpolation method-Bilinear Interpolation A=(46+112)/2 B=(46+210)/2 C=(46+112+210+90)/4

  5. Interpolation method-Nearest neighbor interpolation

  6. Proposed scheme

  7. Proposed scheme- neighbor mean interpolation

  8. Proposed scheme- Embedding procedure interpolation

  9. Proposed scheme- Embedding procedure Embed secret bit Cover image Stego image

  10. Proposed scheme- Extraction and recovery procedure Recover Stego image Cover image Extract

  11. Experimental results A comparison of PSNR values for the three interpolation methods

  12. Experimental results A comparison of other reversible methods on pure payload and PSNR

  13. Experimental results A comparison of other irreversible methods on capacity

  14. Conclusions • The scheme neighbor mean interpolation method had a low-time complexity and high-calculation speed. • This scheme have more capacity than other methods.

  15. Thanks for your attention

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