Publikation:

An improved DC recovery method from AC coefficients of DCT-transformed images

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Li_5_ICIP2010.pdf
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Datum

2010

Autor:innen

Kuo, C.-C. Jay

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http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-127437
DOI (zitierfähiger Link)
https://doi.org/10.1109/ICIP.2010.5653467
ArXiv-ID
http://arxiv.org/abs/1002.1727v3

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Urheberrechtlich geschützt

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Open Access-Veröffentlichung
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Published

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Proceedings of 17th IEEE International Conference on Image Processing (ICIP 2010). IEEE, 2010, pp. 2085-2088. eISSN 1522-4880. ISBN 978-1-4244-7992-4. Available under: doi: 10.1109/ICIP.2010.5653467

Zusammenfassung

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.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
004 Informatik

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Konferenz

17th IEEE International Conference on Image Processing (ICIP 2010), 26. Sept. 2010 - 29. Sept. 2010, Hong Kong, Hong Kong
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ISO 690LI, Shujun, Junaid Jameel AHMAD, Dietmar SAUPE, C.-C. Jay KUO, 2010. An improved DC recovery method from AC coefficients of DCT-transformed images. 17th IEEE International Conference on Image Processing (ICIP 2010). Hong Kong, Hong Kong, 26. Sept. 2010 - 29. Sept. 2010. In: Proceedings of 17th IEEE International Conference on Image Processing (ICIP 2010). IEEE, 2010, pp. 2085-2088. eISSN 1522-4880. ISBN 978-1-4244-7992-4. Available under: doi: 10.1109/ICIP.2010.5653467
BibTex
@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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6 pages, 6 figures, ICIP 2010
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