Signal processing group studies methods of processing information bearing signals for a particular aim. Signals can be one or multi-dimensional; deterministic or random. The goal can be restoration of a noise corrupted image, compression of a video sequence, generation of alternative viewpoint of a scene, optimal methods of decision under uncertainity (detection and estimation) and efficient usage of resources such as bandwidth, computation or time etc.

Signal processing tools are widely applied. Some applications are multimedia signal processing (speech, image and video processing), control theory, communications (statistical signal processing, detection/estimation theory), biomedical applications, radar-sonar problems and more.

Signal processing group at METU is speficially working on multimedia signal processing (all aspects), radar signal processing (including SAR imaging and STAP techniques), spectrum estimation techniques, direction of arrival estimation methods.

Faculty Members

Research Labs

Related Labs

Recent Publications

  • 2009, U. Gudukbay and A. Aydin Alatan, "Special issue on advances in three-dimensional television and video: Guest editorial", Signal Processing: Image Communication, vol.24, no. 1+2, pages 1-2 2009.
  • 2009, Ozgur Deniz Onur, A. Aydin Alatan, "Video Adaptation Based on Content Characteristics and Hardware Capabilities", Advances in Semantic Media Adaptation and Personalization, Volume 2, CRC Press, Editors M. Angelides, M. Wallace, P.Mylonas, 2009.
  • 2009, Evren Imre, A. Aydin Alatan and Ugur Güdükbay, "Rate-Distortion Efficient Piecewise Planar 3D Scene Representation from 2D Images" , IEEE Transactions on Image Processing, vol 18, no 3, pp 2009.
  • 2009, A. Serdar Tan, A. Aksay, G. Akar, E. Arikan, "Rate-Distortion Optimization for Stereoscopic Video Streaming with Unequal Error Protection", EURASIP Journal on Advances in Signal Processing Special Issue 3DTV: Capture, Transmission and Display of 3D Video, vol. 2009, Article ID 632545, 15 pages, 2009.
  • 2008, K. Oztoprak, G. B. Akar, “Hybrid Fault Tolerant Peer to Peer Video Streaming Architecture,” IEICE TRANSACTIONS on Communications Vol.E91-B No.11 pp.3627-3638, Nov. 2008.
  • 2008, Alper Koz and A. Aydin Alatan,"Oblivious Spatio-Temporal Watermarking of Digital Video by Exploiting the Human Visual System", IEEE Transactions on Circuits and Systems for Video Technology, vol. 18, no. 3, pages 326-337, March 2008
  • 2008, Ayhan Yilmaz, A. Aydin Alatan,"Error detection and concealment for video transmission using information hiding", Signal Processing: Image Communication, vol.23, no. 4, pages 298-312 2008.
  • 2007, Alper Koz, George Triantafyllidis and A. Aydın Alatan, "3D Watermarking: Techniques and Directions", in Three-Dimensional Television: Capture, Transmission, and Display, Editors: Haldun M. Ozaktas and Levent Onural, Springer, Heidelberg, 2007.
  • 2007, Evren Imre, Sebastian Knorr, Burak Ozkalayci, Ugur Topay, A. Aydin Alatan and Thomas Sikora,"Towards 3-D Scene Reconstruction from Broadcast Video", (EURASIP) Signal Processing: Image Communication, Elsevier, vol.22,no.2, February 2007 ,pp.108-126
  • 2007, Stoykova, E.; Alatan, A.A.; Benzie, P.; Grammalidis, N.; Malassiotis, S.; Ostermann, J.; Piekh, S.; Sainov, V.; Theobalt, C.; Thevar, T.; Zabulis, X., "3-D Time-Varying Scene Capture Technologies—A Survey", IEEE Transactions on Circuits and Systems for Video Technology, vol. 17, no.11, November 2007, pp. 1568-1586.
  • 2007, Alatan, A.A.; Yemez, Y.; Gudukbay, U.; Zabulis, X.; Muller, K.; Erdem, C.E.; Weigel, C.; Smolic, A., "Scene Representation Technologies for 3DTV—A Survey", IEEE Transactions on Circuits and Systems for Video Technology, vol. 17, no.11, November 2007, pp. 1586-1605.
  • 2007, T. Engin Tuncer, T. Kaya Yaşar, Benjamin Friedlander, “DOA Estimation For Nonuniform Linear Arrays By Using Array Interpolation”, Radio Science, Vol.42, No.4, July 2007.
  • 2007, G. B. Akar, A. M. Tekalp, C. Fehn, R. Civanlar, Transport Methods in 3DTV - A Survey. "IEEE Trans. CSVT", 17, p.1622 – 16, 2007.
  • 2007, O. E. Okman and G. B. Akar, Quantization index modulation-based image watermarking using digital holography. "J. Opt. Soc. Am. A ", 24, p.243-252, 2007.
  • 2007, A. Smolic, K. Muller, N. Stefanoski, J. Ostermann, A. Gotchev, G. B. Akar, et al, 3DTV: Coding Algortihms for 3DTV – A Survey. "IEEE Trans. CSVT", 17, p.1606 – 16, 2007.
  • 2007, C. Candan, On Higher Order Approximations for Hermite - Gaussian Functions And Discrete Fractional Fourier Transforms. "IEEE Signal Processing Letters", 14, p.699-702, 2007.
  • 2007, M Cavusoglu, M Kamasak, O Erogul, T. Ciloglu, Y Serinagaoglu and T Akcam, An efficient method for snore/nonsnore classification of sleep sounds. "Physiological Measurement", 28, p.841-853, 2007.
  • 2007, Özgül Salor, Bryan L. Pellom, T. Ciloglu, Mübeccel Demirekler, Turkish speech corpora and recognition tools developed by porting SONIC: Towards multilingual speech recognition Volume 21, Issue 4, October 2007, Pages 580-593. "Computer Speech & Language", 21, 2007.
  • 2007, C. Candan, An Efficient Filtering Structure For Lagrange Interpolation. "IEEE Signal Processing Letters", 14, p.17-19, 2007.
  • 2006, A. Norkin, A. Aksay, C. Bilen, G. B. Akar, A. Gotchev, J. Astola, Schemes for multiple description coding of stereoscopic video. "Lecture Notes in Computer Science,", 4105, p.730-737, 2006.
  • 2006, C. Candan, Derivation of Length Extension Formulas For Complementary Sets of Sequences Using Orthogonal Filterbanks. "Electronics Letters,", 42, p.1427-1428, 2006.
  • 2006, K. Oztekin , G. B. Akar, A comparison on textured motion classification. "Lecture Notes in Computer Science", 4105, p.722-729, 2006.
  • 2006, T. Çiloğlu, New Initialization Methods for Discrete Coefficient FIR Filter Design with Coefficient Scaling and the use of Scale Factor in Design Process . "IEEE Transaction on Signal Processing", 54, p.796-800, 2006.
  • 2006, Özlem Öztürk, T. Çiloğlu, Segmental Duration Modelling in Turkish. "Lecture Notes in Computer Science", 4188, p.669-676, 2006.
  • 2006, Birant Örten, A.A. Alatan, T. Çiloğlu, Recognizing Events in an Automated Surveillance System. "Lecture Notes in Computer Science", 4105, p.434-441, 2006.
  • 2005, Eren Gurses, G. B Akar, Nail Akar, A Simple and Effective Mechanism for Stored Video Streaming with TCP Transport and Server-Side Adaptive Frame Discard. "Computer Networks", 48, p.489-501, 2005.

Ongoing Projects

  • Underwater Acoustic Signal Processing
Oct. 2008 - 20XX, Integration Project, in cooperation with ASELSAN, Director: Tolga Ciloğlu, contact director for possible employment, practice opportunities.
  • Radar Signal Processing
Feb. 2007 - Feb.2010, Tubitak 1001 Project, PI: Cağatay Candan, looking for graduate students, contact PI for employment opportunities and further details.
  • Speech Processing
Oct. 2007 - Apr.2010, Tubitak 1001 Project, Konuşma Bölütlemede Görüntü Bilgisinin Kulanımı, PI: Tolga Çiloğlu.
  • Video Processing and transmission
Jan. 2008 - Jan.2011, EU FP7 Project, Mobile 3DTV, PI: Gözde B. Akar.

Completed Projects

Aydin Alatan

  • MPEG7 Uyumlu Sayısal Video Arşiv Sistemi. TÜBİTAK- BİLTEN, April 2002 - October 2003.
  • Çoklu Hedefli Çoklu Kameralı Hedef İzleyici Algotitma Tasarımı. ASELSAN, January 2003 - December 2003.
  • Deniz Üstü Platform Teşhisi ve Sistem Entegrasyonu. TÜBİTAK BİLTEN, August 2003 - January 2004.
  • Deniz Üstü Platform Teşhisi ve Sistem Entegrasyonu. TÜBİTAK BİLTEN, August 2003 - January 2004.
  • E-devlet için Çoğulortam Arşiv Sistemi. DPT-YUUP, January 2004 - 1 December 2005.
  • European Community 6th Framework, 3DTV Network of Excellence, September 2004 - September 2008.
  • Semantic Multimodal Analysis of Digital Media. TÜBİTAK-COST, June 2004 - June 2008
  • Gurbuz Sahne Gericatimi, TUBITAK Kariyer Projesi, October 2004 - October 2008
  • ASELSAN KMS Hedef Tespit ve Takip, January 2005 - December 2005.
  • ASELSAN GTTA ve GIADA. ASELSAN, November 2005 - June 2006.
  • Video Artikliklari Kullanarak Gurbuz 3B Sahne Gericatimi, April 2005 - APRIL 2009.

Gozde Bozdagı Akar

  • Radar Sistemi Tasarım Çalışması, ASELSAN, February 2003 - December 2003
  • European Community 6th Framework, ICLASS, September 2004 - January 2009.
  • European Community 6th Framework, 3DTV Network of Excellence, September 2004 - September 2008.
  • Kulturel Mirasi koruma amacli cogulortam veri isleme, DPT.
  • Target Detection, ASELSAN, April 2006 - April 2007

Tolga Çiloğlu

  • ORIENTEL. ELDA, September 2002 - December 2003.
  • Aktif Gürültü Kontrolu. TÜBİTAK, June 2003 - May 2004.
  • Kulaklıklar için Sayısal Aktif Gürültü Kontrolu: Prototip ve Yöntem Çalışması. TÜBİTAK, January 2004 - December 2004.
  • Konuşmacı Tanımada MPEG-7 Ses Özniteliklerinin Kullanılabilirliği. TÜBİTAK, August 2005 - January 2007

Çağatay Candan

  • HSR Tasarımı, ASELSAN, January 2006 - December 2008.
  • LPI Sinyal Tespit Sistemi, ASELSAN, October 2007 - October 2008.

Description of Signal Processing Courses

Undergraduate Courses:
EE 230 : Introduction to probability. Required background for statistical signal processing.
EE 301 : Introduction to signal representation and transforms. Foundations
EE 306 : Random processes. Undergraduate level introduction, but fairly complete.
EE 430 : Digital Signal Processing. THE course.
...

Graduate Courses:
EE 503 : Introduction to Statistical Signal Processing
EE 504 : Adaptive Filtering
EE 505 : Wavelets, Filterbanks, Time-Frequency Distributions (Advanced)
EE 603 : Spectrum Estimation (Advanced)
EE 633 : Speech Processing
EE 634 : Image Processing
EE 636 : Video Processing
EE 7XX : Radar Signal Processing
EE 7XX : Sensor Array Signal Processing (Advanced)

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