Prof. Dr. Vedat Tavsanoglu
 
Professor of Circuits & Signal Processing
 
Department of Electronics and Communications Engineering
Yildiz Technical University, Besiktas, 34349 Istanbul, TURKEY
Phone:    +90 212 259 7070 Ext 2877

Fax:        +90 212 259 4967

E-mail:   tavsanav@yildiz.edu.tr


Visiting Professor to the Applied DSP and VLSI Research Group

University of Westminster, London, UK

 

 

 

Teaching Interests

  • Cellular Neural Networks
  • Circuit Theory
  • Digital Filters
  • Digital Signal Processing
  • Fourier Transforms
  • Image Processing
  • Neural Networks
  • Signal & Systems
  • Telecommunications Theory

Click here for lecture notes

 

Research Interests

  • Cellular Neural Networks
  • Digital Filters
  • Image Processing

 

Some IEEE Activities

  • General Chairman of the 10th IEEE International Workshop on Cellular Neural Networks and their Applications (CNNA 06), Istanbul, Turkey, 28-30 August 2006
  • Distinguished Lecturer of the IEEE Circuits & Systems Society (2002-03)
  • Past Chair, Circuits & Systems Chapter of the IEEE UK & Republic of Ireland Section
  • Member of the IEEE Circuits & Systems Society Nonlinear Circuits & Systems Technical Committee
  • Member of the IEEE Circuits & Systems Society Multimedia Systems Technical Committee
  • Member of the IEEE Circuits & Systems Society Cellular Neural Networks and Array Computing Technical Committee
  • General Chairman of the 5th IEEE International Workshop on Cellular Neural Networks and their Applications (CNNA’98), London, England, 14-17 April 1998
  • Associate Editor to IEEE Transactions on Circuits & Systems-I responsible for Digital Circuit and Filter Principals, July 1995-July 1997

 

Publications Relating to Present Research Activity

  • Joy, M.P., and Tavsanoglu, V. : “A New Parameter Range for the Stability of Opposite-Sign Cellular Neural Networks,”  IEEE Trans. Circuits Syst. I., vol.CAS-40, no.3, pp.204-207, March 1993.
  • Tavsanoglu, V.: “Singular Value Decomposition in Sensitivity Minimisation for Digital Filters,” Proc. 1993 IEEE International Symposium on Circuits and Systems (ISCAS’93), pp.152-155, Chicago, Illinois, USA, 3-6 May 1993.
  • Joy, M.P., and Tavsanoglu, V.: “Perturbations of CNNs,” Proc. 1994 IEEE International Symposium on Circuits and Systems (ISCAS’94), vol.6,.pp.221-224, London, UK, 30 May- 2 June 1994.
  • Joy, M.P., and Tavsanoglu, V.: “The Value-Asymmetric Opposite-Sign Cellular Neural Network,” Proc. 37th Midwest Symposium on Circuits & Systems (MWSCAS’94), Lafayette, Louisiana, USA, 3-5 August 1994.
  • Joy, M. P., and Tavsanoglu, V.: “Circulant Matrices and the Stability Theory of CNNs,” Proc. 1994 IEEE International Workshop on Cellular Neural Networks and their Applications (CNNA'94), pp. 21-26, Rome, Italy, 18-21 December 1994.
  • Arik, S., and Tavsanoglu, V.: “A Weaker Condition for the Stability of Nonsymmetric CNNs," Proc. 1994 IEEE International Workshop on Cellular Neural Networks and their Applications (CNNA'94), pp. 15-20, Rome, Italy, 18-21 December 1994.
  • Joy, M. P., and Tavsanoglu, V.: “Circulant Matrices and the Stability of Ring CNNs,” Proc. 1995 IEEE International Symposium on Circuits and Systems (ISCAS’95), vol.1, pp.501-504, Seattle, Washington, USA, April 1995.
  • Arik, S., and Tavsanoglu, V.: “Absolute Stability of Neural Networks,”  Proc. 1995 European Conference on Circuit Theory and Design (ECCTD'95), pp.207-210, vol.1, Istanbul, Turkey, 27-31 August 1995.
  • Tufan, E., and Tavsanoglu, V.: “Design of Two-Channel IIR PRQMF Banks Through Balanced Model Reduction,” Proc. 1995 European Conference on Circuit Theory and Design (ECCTD’95), vol.1,pp.179-182, Istanbul, Turkey, 27-31 August 1995.
  • Tavsanoglu, V., and Olukoya, A.: “The Use of the Cross-Grammian Matrix in the Sensitivity Minimisation of State-Space Filters,” Proc. 1995 European Conference on Circuit Theory and Design (ECCTD'95), vol.2, pp.1011-1014, Istanbul, Turkey, 27-31 August 1995.
  • Joy, M. P., and Tavsanoglu, V.: “Circulant Matrices and the Stability of a Class of CNNs,” International J. Circuit Theory & Applications, vol.24, no.1, pp.7-13, January- February 1996.
  • Tufan, E., and Tavsanoglu, V.: “Design of Two-Channel Linear Phase IIR PRQMF Banks based on the Approximation of FIR Filters,” Proc 29th Annual Asilomar Conference on Signals, Systems and Computers (ASILOMAR’96), Monterey, Cal., USA, October 1995.
  • Arik, S., and Tavsanoglu, V.: “Absolute Stability of Nonsymmetric Neural Networks,” Proc. 1996 IEEE International Symposium on Circuits and Systems (ISCAS’96), vol.1, pp.441-444, Atlanta, Georgia, USA, 12-15 May 1996.
  • Tufan, E., and Tavsanoglu, V.: “Multiscale Edge Detection using IIR Filter Banks,” Proc. 1996 IEEE International Symposium on Circuits and Systems (ISCAS’96), vol.2, pp.711-714, Atlanta, Georgia, USA, 12-15 May 1996.
  • Tufan, E., and Tavsanoglu, V.: “Design of Two-Channel IIR PRQMF Banks on the Approximation of FIR Filters,” Electronics Letters, vol.32, No 7, pp.641-642, 28th March 1996.
  • Arik, S., and Tavsanoglu, V.: “Equilibrium Analysis of Nonsymmetric CNNs,” International J. Circuit Theory & Applications, vol.24, pp.269-274, May-June 1996.
  • Finger, L., and Tavsanoglu, V.: “Mapping of One-Dimensional Josephson Junction Arrays onto Cellular Neural Networks,” Proc. 1996 IEEE International Workshop on Cellular Neural Networks (CNNA-96), pp.345-350, Seville, Spain, 24-26 June 1996.
  • Finger, L., and Tavsanoglu, V.: “The Dynamics of One-Dimensional Josephson Junction Arrays,” Proc. 1996 Nonlinear Dynamics of Electronic Systems (NDES-96), pp.459-464, Seville, Spain, 27-28 June 1996.
  • Arik, S., and Tavsanoglu, V.: “Global Stability of CNNs with Delay,” Proc. 1996 IEEE International Workshop on Cellular Neural Networks (CNNA’96), pp. 187-190, Seville, Spain, 24-26 June 1996.
  • Finger, L., and Tavsanoglu, V.: “Mapping of One-Dimensional Josephson Junction Arrays onto Cellular Neural Networks and their Dynamics,” IEEE Trans. Circuits Syst. I, vol.44, no.5,pp.438-445, May 1997.
  • Arik, S., and Tavsanoglu, V.: “A Sufficient Condition for Global Stability of Cellular Neural Networks with Delay,” Proc. 1997 IEEE International Symposium on Circuits and Systems (ISCAS’97), Hong Hong, 9-13 June 1997.
  • Arik, S., and Tavsanoglu, V.: “Absolute Stability of a Larger Class of Dynamical Neural Networks,” Proc. 1997 European Conference on Circuit Theory and Design (ECCTD’97), Budapest, Hungary, 31 August- 3 September 1997.
  • Joy, M. P., and Tavsanoglu, V.: “An Equilibrium Analysis of CNNs,” IEEE Trans. Circuits Syst. I., vol.45, no.1,pp. 94-98, January 1998.
  • Arik, S. and Tavsanoglu, V.: “Equilibrium Analysis of Delayed CNNs,” IEEE Trans. Circuits Syst. I., vol. 45, no. 2, pp. 168-171, February 1998.
  • Arik, S., and Tavsanoglu, V.: “A Sufficient Condition for the Existence of a Stable Equilibrium Point in Nonsymmetric Cellular Neural Networks,” Proc. 1998 IEEE International Workshop on Cellular Neural Networks and their Applications (CNNA’98), pp.74-76, London, England, 14-17 April 1998.
  • Arik, S., and Tavsanoglu, V.: “A comment on “Comments on “Necessary and sufficient condition for absolute stability of neural networks”, IEEE Trans. Circuits and Syst.I, vol. 45, no. 5, pp. 995-996, May 1998.
  • Talleux, S., Tavsanoglu, V.,and Tufan, E.: “Handwritten Character Recognition using Steerable Filters and Neural Networks,” Proc.1998 IEEE International Symposium on Circuits and Systems (ISCAS'98), Monterey, Ca, USA, 31 May- 3 June 1998.
  • Buhmann, S., and Tavsanoglu, V.: “Motion Analysis Using Steerable Filters for the Application to Low Quality Images,” Proc. 1998 IEEE International Symposium on Circuits and Systems (ISCAS’98), Monterey, Ca, USA, 31 May- 3 June 1998.
  • Arik, S. and Tavsanoglu, V.: “On the Global Asymptotic Stability of Delayed Cellular Neural Networks,” Proc. 1999 European Conference on Circuit Theory and Design (ECCTD’99), pp.531-534, Streza, Italy, 31 August- 3 September 1999.
  • Arik, S. and Tavsanoglu, V.: “On the Global Asymptotic Stability of Delayed Cellular Neural Networks,” IEEE Trans. Circuits Syst. I., vol.47, no.4, pp.571-574, April 2000.
  • Tavsanoglu, V., and Saatci, E.: “Feature Extraction for Character Recognition Using Gabor-type Filters Implemented by Cellular Neural Networks”, Proc. 2000 IEEE International Workshop on Cellular Neural Networks and Their Applications (CNNA’00), pp. 63-68, Catania, Italy, May 2000.
  • Tavsanoglu,V.: “A Note on the Square Summability of 2-D First-Order Digital Filter Transfer Functions”, Proc.2000 IEEE International Symposium on Circuits & Systems (ISCAS’00), Geneva, Switzerland, 28-31 May 2000.
  • Arik, S. and Tavsanoglu, V.: “A Sufficient Condition for Absolute Stability of a Larger Class of Dynamical Neural Networks”, IEEE Transactions on Circuits and Syst. I, vol. 47, no. 5, pp. 758-760, May 2000.
  • Arik, S., and Tavsanoglu, V.: “Further Results on the Global Asymptotic Stability of Neural Networks,” Proc. 2001 IEEE International Symposium on Circuits and Systems (ISCAS’01), Sydney, Australia, 6-9 May 2001.
  • Saatci, E, and Tavsanoglu, V.: “Handwritten Character Recognition Using CNN Gabor-Type Filters,” Proc. 2001 European Conference on Circuit Theory and Design (ECCTD’01), vol.3, pp. 53-56, Espoo, Finland, 28 Aug.- 1 Sept. 2001.
  • Saatci, E., and Tavsanoglu, V.: “Multiscale Handwritten Character Recognition Using CNN Image Filters,” Proc.2002 International Joint Conference on Neural Networks (IJCNN’02), Honolulu, Hawaii, USA, 12-17 May 2002.
  • Saatci, E., and Tavsanoglu, V.: “On The Optimal Choice of Integration Time-Step for Raster Simulation of a CNN for Gray Level Image Processing,"  Proc. 2002 IEEE International Symposium on Circuits and Systems (ISCAS’02), Phoenix, Arizona, USA, 26-29 May 2002.
  • Arik, S., and Tavsanoglu, V.: “On The Global Robust Stability Of Delayed Neural Networks,” Proc. 2002 IEEE International Symposium on Circuits and Systems (ISCAS’02), Phoenix, Arizona, USA, 26-29 May 2002.
  • Saatci, E., and Tavsanoglu, V.: “Fingerprint Image Enhancement using CNN Gabor-Type Filters,” Proc. 2002 IEEE International Workshop on Cellular Neural Networks and their Applications (CNNA’02), Frankfurt/Main, Germany, 22-24 July 2002.
  • Ozcan, N., Arik S., and Tavsanoglu V.: “New Criteria for the existence of stable equilibrium point in nonsymmetric cellular neural networks,” Proc. 2003 IEEE International Symposium on Circuits and Systems (ISCAS'03), Bangkok, Thailand, 25-28 May 2003.
  • Ozcan, N., Arik S., and Tavsanoglu V.: “On the existence of stable equilibrium point in nonsymmetric cellular neural networks,” Journal of Circuits, Systems and Computers, vol. 12, no: 4, pp. 461-472, August 2003.
  • Arık. S., and Tavsanoglu,V.: “Equilibrium and stability analysis of bidirectional associative memory neural networks with constant time delays,” Proc. 2003 European Conference on Circuit Theory and Design (ECCTD'03), Vol.3, pp. 429-431, , Krakow, Poland, September 2003.
  • Ensari,T., Arik, S. and Tavsanoglu, V.: “Global Stability of A Class of Neural Networks With Time Varying Delay,” Proc. 2004 IEEE International Symposium on Circuits and Systems (ISCAS'04), Vancouver, Canada, May 23-26, 2004.
  • Polat, O., and Tavsanoglu, V.: “3-D Object recognition using 2-D Poses Processed by CNNs and a GRNN”, Proc. 2005 Turkish Symposium Artificial Intelligence and Neural Networks(TAINN’05)”, Cesme, Turkey, June 2005.
  • Arık S., and Tavsanoglu,V.: “Global asymptotic stability analysis of bidirectional associative memory neural networks with constant time delays,” Neurocomputing, Vol.68, pp. 161-176, 2005.
  • Tavsanoglu,V.: “Jacobi’s Iterative Method for Solving Linear Equations and the Simulation of Linear CNN,” Proc. 2006 IEEE International Workshop on Cellular Neural Networks and their Applications (CNNA’06), Istanbul, Turkey, 28-30 August 2006.
  • Arslan E., Arık S., Tavsanoglu,V.: “On the Existence of Stable Equilibrium Points in Delayed Cellular Neural Networks,” Proc. 2006 IEEE International Workshop on Cellular Neural Networks and their Applications (CNNA’06), Istanbul, Turkey, 28-30 August 2006.
  • Saatci, E., Cesur, E., Tavsanoglu,V., and Kale, I.: “An FPGA Implementation of 2-D CNN GABOR-Type Filter,” Proc. 2007 European Conference on Circuit Theory and Design (ECCTD’07), Seville, Spain, 26-30 August 2007.
  • Yildiz, N., and Tavsanoglu,V.: “On the Digital Simulation of Linear Cellular Neural Networks,” Proc. 2007 European Conference on Circuit Theory and Design (ECCTD’07), Seville, Spain, 26-30 August 2007.
  • Senan, S., Arik. S., and Tavsanoglu,V.: “Global Robust Stability of Bidirectional Associative Memory Neural Networks,” Proc. 2007 European Conference on Circuit Theory and Design (ECCTD’07), Seville, Spain, 26-30 August 2007.
  • Kayaer,K., and Tavsanoglu, V.:    “A New Approach to Emulate CNN on FPGAs for Real Time Video Processing,” Proc. 2008 IEEE International Workshop on Cellular Neural Networks and their Applications (CNNA’08), Santiago de Compostela, Spain, 14-16 July 2008.

 

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