Computer Vision, Speech Communication &

Signal Processing Group

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Stamatis Lefkimmiatis

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Stamatis Lefkimmiatis
PhD Student
Office: 2.2.19
Phone: (+30) 210772-2420, -2964
Fax: (+30) 210772-3397
E-mail: sleukim@cs
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Biosketch | Publications


Stamatis Lefkimmiatis was born in Athens, Greece. He received the Diploma degree in Computer Engineering & Informatics (with highest honors) from University of Patras in July 2004. His Diploma Thesis, supervised by the Associate Prof. Kostantinos Mpermperidis (University of Patras), focused on equalization for DMT-based (Discrete Multitone) Systems.

As of October 2004, he is a Ph.D. candidate in CVSP group, school of ECE, NTUA, working in the general areas of Image Analysis and Signal Processing. His research is currently focused on the GSRT 'PENED-2003' project for astronomical data analysis and image processing. He has worked in the HIWIRE EU IST project on microphone array signal processing for speech enhancement and on feature extraction techniques for Automatic Speech Recognition. His research interests include image and speech analysis, nonlinear signal processing and statistical multiscale methods with main applications on astronomical and biomedical image processing.

Journal Publications

  • S. Lefkimmiatis, P. Maragos and G. Papandreou,
    Bayesian Inference on Multiscale Models for Poisson Intensity Estimation: Applications to Photon-Limited Image Denoising,
    IEEE Trans. on Image Processing, vol. 18, no. 8, pp. 1724-1741, Aug. 2009.
  • S. Lefkimmiatis and P. Maragos,
    A Generalized Estimation Approach for Linear and Nonlinear Microphone Array Post-Filters,
    Speech Communication, vol. 49, pp. 657-666, July 2007

Conference Publications

  • S. Lefkimmiatis, G. Papandreou and P. Maragos,
    Poisson-Haar Transform: A Nonlinear Multiscale Representation For Photon-Limited Image Denoising,
    Proc. IEEE Int'l Conf. on Image Processing (ICIP-09), Cairo, Egypt, Nov. 7-11, 2009.
  • S. Lefkimmiatis, G. Papandreou and P. Maragos,
    Photon-Limited Image Denoising by Inference on Multiscale Models,
    Proc. IEEE Int'l Conf. on Image Processing (ICIP-08), San Diego, CA, U.S.A., Oct. 12-15, 2008.
  • S. Lefkimmiatis, P. Maragos and A. Katsamanis,
    Multisensor Multiband Cross-Energy Tracking for Feature Extraction and Recognition,
    Proc. IEEE Int'l Conference on Acoustics, Speech, and Signal Processing (ICASSP-2008), Las Vegas, NV, U.S.A., Mar.-Apr. 2008.
  • D. Dimitriadis, P. Maragos and S. Lefkimmiatis,
    Multiband, Multisensor Features for Robust Speech Recognition,
    Proc. Int'l Conf. on Speech Technology and Communication (InterSpeech 2007 - EuroSpeech), Antwerp, Belgium, Aug. 2007.
  • S. Lefkimmiatis and P. Maragos,
    Optimum Post-Filter Estimation for Noise Reduction in Multichannel Speech Processing,
    Proc. 14th European Signal Processing Conference (EUSIPCO-2006), Florence, Italy, Sept. 4-8 2006.
  • S. Lefkimmiatis, D. Dimitriadis and P. Maragos,
    An Optimum Microphone Array Post-Filter for Speech Applications,
    Proc. Int'l Conf. on Spoken Language Processing (INTERSPEECH 2006 - ICSLP), Pittsburgh PA, USA, pp. 2142-2145, Sep. 2006.
Last modified: Saturday, 14 July 2007 | Created by Nassos Katsamanis and George Papandreou