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


 

 

 

 

 

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 (CNNA98), 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 (ISCAS93), 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 (ISCAS94), 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 (MWSCAS94), 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 (ISCAS95), 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 (ECCTD95), 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 (ASILOMAR96), 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 (ISCAS96), 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 (ISCAS96), 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 (ISCAS97), 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 (ECCTD97), 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 (CNNA98), 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 (ISCAS98), 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 (ECCTD99), 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 (ISCAS00), 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 (ISCAS01), 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 (ECCTD01), 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 (IJCNN02), 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 (ISCAS02), 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 (ISCAS02), 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 (CNNA02), 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.
  • Arik. 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.
  • Saatci, E., and Tavsanoglu V.: "Fingerprint Image Enhancement using CNN Filtering Techniques,” International Journal of Neural Systems, vol. 13, no: 6, pp. 453-460, Dec.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.
  • Arik 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 (CNNA06), Istanbul, Turkey, 28-30 August 2006.
  • Arslan E., Arik 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 (CNNA06), 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 (ECCTD07), 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 (ECCTD07), 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 (ECCTD07), 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.
  • Tural Polat, N., and Tavsanoglu, V.: “A new simulation method for time-derivative CNNs”, “Proc.17th European Signal Processing Conference (EUSIPCO’09)”, Glasgow, Scotland, pp. 288-292, August 2009.
  • Yildiz, N., Cesur, E.,  and Tavsanoglu, V.:  “A New Control Structure For The Pipelined CNN Processor Arrays”, 12th International Workshop on Cellular Nanoscale Networks and their Applications (CNNA'2010), Berkeley, California, Feb. 3-5, 2010.
  • Cesur, E., Yildiz, N., and Tavsanoglu, V.: “Architecture of the Next Generation Real Time CNN Processor: RTCNNP-v2”, 2010 International Symposium on Nonlinear Theory and its Applications (NOLTA'2010), Krakow, Poland, Sept. 5-8, 2010.
  • Yavuz, O., Tural Polat, N., and Tavsanoglu, V.:"On the Simulation of Time Derivative Cellular Neural Networks", 18th European Signal Processing Conference (EUSIPCO-2010), Aalborg, Denmark, August 23-27 2010.

 

_________________