@inproceedings{Li2010-09impro-5976,
  year={2010},
  doi={10.1109/ICIP.2010.5653467},
  title={An improved DC recovery method from AC coefficients of DCT-transformed images},
  isbn={978-1-4244-7992-4},
  isbn={978-1-4244-7992-4},
  publisher={IEEE},
  booktitle={Proceedings of 17th IEEE International Conference on Image Processing (ICIP 2010)},
  pages={2085--2088},
  author={Li, Shujun and Ahmad, Junaid Jameel and Saupe, Dietmar and Kuo, C.-C. Jay},
  note={6 pages, 6 figures, ICIP 2010}
}

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    <dc:contributor>Saupe, Dietmar</dc:contributor>
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    <dcterms:abstract xml:lang="eng">Motivated by the work of Uehara et al., an improved method to recover DC coefficients from AC coefficients of DCT-transformed images is investigated in this work, which finds applications in cryptanalysis of selective multimedia encryption. The proposed under/over-flow rate minimization (FRM) method employs an optimization process to get a statistically more accurate estimation of unknown DC coefficients, thus achieving a better recovery performance. It was shown by experimental results based on 200 test images that the proposed DC recovery method significantly improves the quality of most recovered images in terms of the PSNR values and several state-of-the-art objective image quality assessment (IQA) metrics such as SSIM and MS-SSIM.</dcterms:abstract>
    <dc:creator>Ahmad, Junaid Jameel</dc:creator>
    <dc:creator>Li, Shujun</dc:creator>
    <dc:creator>Saupe, Dietmar</dc:creator>
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    <dcterms:bibliographicCitation>First publ. in: 2010 17th IEEE International Conference on Image Processing : ICIP 2010 ; Hong Kong, 26 - 29. September 2010. Piscataway, NJ : IEEE, 2010. pp. 2085-2088</dcterms:bibliographicCitation>
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