Signal Processing Engineering

Asst. Prof. Ahmet Emir Dirik

Uludag Uni., Muh. Mim. Fak. email: ******@******.***.**

Contact

Elektronik Muhendisligi Bolumu phone: +90-224-**-*****

Information

Gorukle kampusu, 16059, Bursa fax: +90-224-***-****

Turkey web : isis.poly.edu/ emir

Multimedia Security, Multimedia Forensics, Data hiding, Steganography, Watermarking, Pattern

Research

Recognition, Image processing, Biometrics, Behavior-metrics, Usable security, Graphical Passwords.

Interests

Polytechnic Institute of NYU, USA April 2010

Education

Ph.D, Electrical & Computer Engineering,

Dissertation: New Techniques in Multimedia Forensics

Advisor: Nasir Memon

Uludag University, Turkey July 2002

MS, Electronic Engineering,

Thesis: GPS based real time vehicle tracking system

Uludag University, Turkey July 2002

MBA, Institute of Social Sciences

Uludag University, Turkey June 1999

B.A., Electronic Engineering

Uludag University, Turkey April 2012 - current

Academic

Assistant Professor in Dept. of Electronic Engineering

Experience

Uludag University, Turkey June 2001 - April 2012

Research assistant in Dept. of Electronic Engineering

Polytechnic Institute of NYU, Brooklyn, NY, US Jan. 2006 - June 2010

Research fellow in Dept. of Electrical and Computer Engineering

Includes current Ph.D. research, and research/consulting projects.

Polytechnic University, Brooklyn, NY, US June 2004 - June 2005

Visiting researcher

Research for NSF funded project on steganalysis.

IBM Fall 2009

Professional

T.J. Watson Research Center, Hawthorne, NY

Experience

Research on video content analysis and OCR

A video content analysis application demo was developed.

The application demo was presented in Lotusphere 2010 Conference.

Patent submitted.

Pitney Bowes Summer 2008

AC&T, Advanced Concepts and Technology, Shelton, CT.

Research on print-scan modelling, image encryption, counterfeit detection

Patent application submitted to USPTO on Dec 2008.

Pitney Bowes Summer 2007

AC&T, Advanced Concepts and Technology, Shelton, CT.

Research on image and document security, print-scan channel modelling

Patent application submitted to USPTO on Dec. 2008.

Automatic Video Summarization, US2012/0106925, May 2012.

Patents

User authentication for devices with touch sensitive elements, such as touch sensitive display

screens, led in U.S. Patent and Trademark O ce on Jan. 2010, US2010/0225443 A1, Sept.

2010.

Image encryption for print-and-scan channels using pixel position permutation, led in U.S.

Patent and Trademark O ce on Dec. 2008, US2010/0169649 A1, July 2010.

System and method for paper independent copy detection pattern, led in U.S. Patent and Trade-

mark O ce on Dec. 2008, US 2010/0080471 A1, April 2010.

A. E. Dirik, New Techniques in Multimedia Forensics, LAP LAMBERT Academic Publishing,

Book

ISBN-10: 384-***-****, 2011.

A. E. Dirik, Source Attribution Based on Physical Defects in Light Path, Digital Image Forensics,

Book Chapter

in H.T. Sencar and N.D. Memon (eds.), Springer, New York, 2012.

M. Topkara, S. Pan, J. Lai, A. E. Dirik, S. Wood, J. Boston, You ve got Video : Increasing

Selected

clickthrough when sharing enterprise video with email, ACM SIGCHI Conference on Human

Publications

Factors in Computing Systems, CHI 2012, Austin, TX. (23% acceptance rate)

S. Bayram, A. E. Dirik, H. T. Sencar, N. Memon. An Ensemble of Classi ers Approach to Ste-

ganalysis, ICPR 2010, International Conference on Pattern Recognition, 2010, Istanbul. (18%

acceptance rate)

Y. Fang, A. E. Dirik, X. Sun, N. Memon. Source Class Identi cation for DSLR and Compact

Cameras, IEEE MMSP 2009, Brazil.

A. E. Dirik, N. Memon. Image Tamper Detection Based on Demosaicing Artifacts, IEEE ICIP

2009, Egypt. (45% acceptance rate)

A. E. Dirik, H. T. Sencar, N. Memon. Flatbed Scanner Identi cation Based On Dust and

Scratches Over Scanner Platen, IEEE ICASSP 2009.

A. E. Dirik, H. T. Sencar, N. Memon. Camera identi cation based on sensor dust traces, IEEE

Transactions of Information Security and Forensics, Sept, 2008.

A. E. Dirik, S. Bayram, H. T. Sencar, N. Memon. New features to identify computer generated

images, Proc. of IEEE ICIP, 2007.

G. Gul, A. E. Dirik, and I. Avcibas. Steganalytic Features for JPEG Compression Based Per-

turbed Quantization, IEEE Signal Processing Letters, vol 14, no 3, march, p. 205-208, 2007.

A. E. Dirik, N. Memon, J. C. Birget, Modeling User Choice in the PassPoints Graphical Pass-

word Scheme, Symposium on Usable Privacy and Security 2007 (SOUPS 2007). (31% acceptance

rate)

A. E. Dirik, H. T. Sencar, N. Memon. 2007. Source Camera Identi cation Based on Sensor

Dust Characteristics, SAFE 2007: Workshop on Signal Processing Applications for Public Secu-

rity and Forensics, April, 2007.

G. Gul, A. E. Dirik, I. Avcibas, Steganalysis of Perturbed Quantization, Proceedings of IEEE

SIU (Signal Processing and Communications Applications), 2006.

A signature authentication software developed for iPhone/iPod Touch. (2009)

Software

The project page: http://identouch.com

development

The New York Times, Logging In With a Touch or a Phrase (Anything but a Password), De-

Press Coverage

cember 24, 2011.

Thomson, The Security Newsletter, N 13, Spring 2009.

IEEE Transactions of Information Forensics and Security

Refereed For

IEEE Transactions of Image Processing

IEEE International Conference on Image Processing

Elsevier, Computers and Electrical Engineering Journal

Elsevier, Signal Processing Journal

Springer, Signal, Image and Video Processing

Computer/Human Interaction Conference, CHI

ICIP 2009 travel grant from IEEE

Honors and

Awards

3rd prize winner of CSAW 2007 Research Poster Competition

Polytechnic Institute of NYU, ECE Research Fellowship, 2006-2010.

Polytechnic Institute of NYU, CATT (Center for Advanced Technology) Graduate Research Fel-

lowship, 2005-2006.

YOK (Turkish Higher Education Council) PhD Scholarship, 2006-2009.

Uludag University, Graduated with highest GPA,1999.

TOFAS A.S, Undergraduate scholarship, 1996.

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