Home Faculty Members Prof.Dr.Joewono Widjaja
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Dr. Joewono Widjaja
Professor

Contact address:
           School of Laser Technology and Photonics
           Institute of Science
           Suranaree University of Technology
           Nakhon Ratchasima 30000, Thailand
           Tel: (+66)-44-224194, Fax: (+66)-44-224185
           Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
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Education:
           1986 : B.Eng. (Electronic), Satya Wacana Christian University, Indonesia
           1991 : M.Eng. (Electronic), Hokkaido University, Japan 
           1994 : D.Eng. (Electronic), Hokkaido University, Japan

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Awards and Honors:
1987 - 1994 : Monbusho Scholarship
1991 : Asami Award, Hokkaido University
1999 : STA Fellowship, Japan Science and Technology Corporation
2008 : Galileo Galilei Award, International Commission for Optics
2009 : SUT Honorary Award, Suranaree University of Technology
2010 : Senior Member, Optical Society of America

 

Employment:

1994 - 1995

:

 Research Associate, Electronics Engineering Department, University of Electro- Communication, Tokyo, Japan
1995 - 1996 : Post Doctoral Research Fellow, School of Applied Science, Nanyang Technological University, Singapore
1997 - 1998 : Lecturer, School of Laser Technology and Photonics
1998 - 2001 : Assistant Professor, School of Laser Technology and Photonics
2001 - 2007 : Associate Professor, School of Laser Technology and Photonics
2007 - Present : Professor, School of Laser Technology and Photonics

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Research interest:
             1. Photonic signal and image processing
             2. Biometric recognition
             3. Holographic particle sizing and tracking
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Publications:
A. Peer-reviewed papers
1. J. Widjaja and Y. Tomita, "Optical wavelet-matched filtering by four-wave mixing in photorefractive media," Opt. Commun. 117, pp. 123-126 (1995).
2. J. Widjaja and Y. Tomita,"Optical triple-in digital logics using non-linear optical four-wave mixing," Appl. Opt. 34, pp. 5074-5076 (1995).
3. J. Widjaja, Y. Tomita, and A. Wahab, "Application of wavelet-matched filters to holographic associative memories," Opt. Commun. 132, 217-220 (1996).
4. J. Widjaja and Y. Tomita, "Particle-image velocimetry using wavelet-matched filters," J. Mod. Opt. 43, 1993-1997 (1996).
5. J. Widjaja, "Spatial-angular multiplexed 3-d holographic memory using zone plates and 1- d grating," Opt. Mem. Neural Net. 6, pp. 125-127 (1997).
6. J. Widjaja, "Automatic holographic particle sizing using wavelet-based joint transform correlator", Optik 107, pp. 132-134 (1998).
7. J. Widjaja, J. Uozumi, and T. Asakura, "Real-time specklegram analysis using wavelet-matched filters, " Asian J. Phys. 7, pp. 37-41 (1998).
8. J. Widjaja and S. Jutamulia, "Use of wavelet analysis for improving autofocusing capability," Opt. Commun. 151, pp. 12-14 (1998).
9. J. Widjaja, "Dynamic optical processing of 2-D wavelet transforms," Opt. Mem Neural Net. 8, pp. 75-79 (1999).
10. J. Widjaja, "Wavelet transform for autofocusing detection systems," Sci. Asia 26, pp. 111-114, (2000).
11. J. Widjaja, N. Wada, Y. Ishii, and W. Chujo, "Photonic packet address processor using holographic correlator," Elect. Lett. 37, pp. 703-704 (2001).
12. J. Widjaja, "IP router using optical address recognition with second-harmonic generator," Elect. Lett. 38, pp. 1268-1270 (2002).
13. S. Soontaranon, J. Widjaja, and T. Asakura, "Direct analysis of in-line particle holograms by using wavelet transform and envelope reconstruction method," Optik 113, pp. 489-494 (2002).
14. J. Widjaja, "Spectral-hologram-based correlator for photonic IP router: Architectural Considerations," Opt. Eng. 42, pp. 747-752 (2003).
15. J. Widjaja, "Effects of image compression on digital specklegrams," in Special Issue: Trends in Digital Speckle Pattern Interferometry, Opt. Lasers Eng. 39, pp. 501-506 (2003).
16. J. Widjaja, "Wavelet transform correlator," in Encyclopedia of Optical Engineering, R.G. Driggers, Eds., pp. 2993 - 2999, Marcel Dekker, New York (2003).
17. J. Widjaja and U. Suripon, “Real-Time Joint Transform Correlator by Using Compressed Reference Images”, Opt. Eng. 43, pp. 1737-1745 (2004).
18. H. Hui, F.J. Song, J. Widjaja, and J.H. Li, “ANFIS-Based Fingerprint-Matching Algorithm”, Opt. Eng. 43, pp. 1814-1819 (2004).
19. S. Soontaranon, J. Widjaja, and T. Asakura, “Improved holographic particle sizing by using absolute values of the wavelet transform,” Opt. Commun 240, pp. 253-260 (2004).
20. J. Widjaja and U. Suripon, "Multiple-target detection by using joint transform correlator with compressed reference images," Opt. Commun. 253, pp. 44-55 (2005).
21. J. Widjaja, “Objective evaluation of information retrieved from digitally-compressed in-line holograms,” Opt. Lasers Eng. 44, pp. 1239-1251 (2006).
22. J. Widjaja and U. Suripon, “Experimental verifications of joint transform correlator using compressed reference images,” Appl. Opt. 45, pp. 8074-8082 (2006).
23. P. Kaewkasi, J. Widjaja and J. Uozumi, “Effects of threshold on single-target detection by using modified amplitude-modulated joint transform correlator,” Opt. Commun. 271, pp. 48-58 (2007).
24. J. Widjaja, “Detection performance of wavelet-based joint transform correlation,” Appl. Opt. 46, pp. 8278-8283 (2007).
25. P. Kaewkasi, J. Widjaja and J. Uozumi, "Effects of threshold on multiple-target detection by using a modified amplitude-modulated joint transform correlator," Opt. Eng. 47, 017206 (2008).
26. S. Soontaranon, J. Widjaja and T. Asakura, "Extraction of object position from in-line holograms by using single wavelet coefficient," Opt. Commun. 281, pp. 1461-1467 (2008).
27. J. Widjaja and P. Raweng, "Image Reconstruction from In-Line Fresnel Holograms By Using Coherent Background Elimination," Opt. Mem. Neural Net. 17, pp. 23-19 (2008).
28. P. Kaewkasi, J. Widjaja and J. Uozumi, "Modified joint transform correlator by using smoothed amplitude-modulated filter,"Opt. Eng. 47, 077203 (2008).
29. J. Widjaja and S. Soontaranon, "All wavelet analysis of in-line particle holograms," Opt. Laser Eng. 47, pp. 1325-1333 (2008).
30. S. Soontaranon and J. Widjaja, "Quality of images decrypted from in-line holographic encryption of images," Opt. Laser Eng. 48, 69-74. (2010).
31. J. Widjaja, “Wavelet filter for improving detection performance of compression-based joint transform correlator,” Appl. Opt. 49, pp. 5769 – 5776 (2010).
32. J. Widjaja, “Multi-Resolution Image Representation by Using Polychromatic Wavelet Transform,” Opt. Mem. Neural Net. 19, pp. 279-284 (2010).
33. J. Widjaja, “Enhanced holographic encryption using a phase-modulated plane wave,” SPIE Newsroom (January 31, 2011). DOI: 10.1117/2.1201012.003313.
34.

J. Widjaja and U. Suripon, “Retina recognition using compression-based joint transform correlator,” Opt. Eng. 50, pp. 098201-1 - 098201-8 (2011).
35. J. Widjaja, “Noisy face recognition using compression-based joint wavelet-transform correlator,” Opt. Commun. 285, pp. 1029-1034 (2011).
36. J. Widjaja, “Multiple low-contrast fingerprint detections by using compression-based joint wavelet-transform correlator,” Opt. Laser Tech. 47, 37-42 (2012).
37. J. Widjaja and P. Chuamchaitrakool, “Holographic particle tracking using Wigner-Ville distribution,” Opt. Laser Eng.51, 311-316 (2013).
38.

J. Widjaja and U. Suripon, “Retinal Blood Vessel Detection Using Wavelet Matched Filter,”
Opt. Eng. 50, pp. 037204-1 - 037204-6 (2013).

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B. Proceedings of International Conference
1. J. Widjaja and Y. Tomita, "Real-time wavelet-matched filtering using photorefractive four-wave mixing," Proc. SPIE 2529 (Photorefractive fiber and crystal devices: Materials, Optical properties, and Applications), 285-289 (1995).
2. J. Widjaja and Y. Tomita, "Optical combinatorial digital logics using photorefractive four-wave mixing," ICO Technical Digest I (International Topical Meeting on Optical Computing), pp. 152-153 (1996).
3. J. Widjaja, A. Wahab, and Y. Tomita, "Holographic associative memory using wavelet-matched filters," Proc. SPIE 2778 (ICO XVII: Optics for Science and New Technology), pp. 439-440 (1996).
4. J. Widjaja and A. Wahab, "Optical associative memory using wavelet transform," Proc. SPIE 2904 Photonics East '96 (Intelligent Robots and Computer Vision XV: Algorithms, Techniques, Active Vision, and Materials Handling), pp. 250-255 (1996).
5. J. Widjaja and S. Jutamulia, "Wavelet transform-based autofocus camera systems," Proc. IEEE (Asia-Pacific Conference on Circuits and Systems), pp. 49-51 (1998).
6. J. Widjaja, "Particle sizing and tracking using wavelet transform," Proc. SPIE 3749 (ICO XVIII: Optics for the Next Millenium), pp. 781-782 (1999).
7. J. Widjaja, "Effects of image compression on digital specklegrams," Proc. SPIE 4317 (International Conference on Experimental Mechanics 2000), pp. 156-159 (2001).
8. S. Soontaranon and J. Widjaja, "Particle sizing and tracking by using digital analysis", Proc. First International Symposium on Optical and Quantum Technology, pp.68-71 (2001).
9. U. Suripon and J. Widjaja, "JPEG compression of digital holograms," Proc. First International Symposium on Optical and Quantum Technology, pp.72-74 (2001).
10. S. Soontaranon, J. Widjaja, and T. Asakura, "Particle sizing and tracking by using wavelet analysis and reconstruction of envelope function," Proc. SPIE 4929 (Photonics Asia: Optical Information Processing Technology), pp. 141-148 (2002).
11. J. Widjaja, "IP router by using spectral hologram as address bank," Proc. SPIE 4929 (Photonics Asia: Optical Information Processing Technology), pp. 165-171 (2002). (Invited paper)
12. J. Widjaja and U. Suripon, “Effects of JPEG Compression on Joint Transform Correlator,” Proc. ICCAS 2004 (2004 International Conference on Control, Automation, and Systems), pp. 1662-1665 (2004).
13. J. Widjaja , S. Soontaranon and T. Asakura, "Holographic Particle Sizing by Using Absolutes Values of Wavelet Transform,"Proc. SPIE 5852 (The 3rd International Conference on Experimental Mechanics), pp. 573-577 (2004).
14. J. Widjaja and P. Raweng, "Quality of images reconstructed from in-line Fresnel holograms,"Proc. 2nd International Conference on Optics and Laser Applications, pp. 24-28 (2007). (Plenary talk)
15.

S. Soontaranon and J. Widjaja, “Particle tracking from in-line holograms by using single wavelet coefficient,” Proc. SPIE 6793 (International Workshop and Conference on Photonics and Nanotechnology), pp. 6793051-5 (2008).
16.

J. Widjaja, “Holographic image encryption using random phase mask,” Proc. SPIE 7851 (Photonics Asia: Information Optics and Holographic Data Storage), pp. 785108-1 – 785108-7 (2010). (Invited paper)
17.

P. Chuamchaitrakool and J. Widjaja, “Extraction of Object Depth from In – Line Holograms Using Wigner Distribution Function,” 1st Asean Plus Three Graduate Research Congress (2012).
18.

J. Widjaja and P. Chuamchaitrakool, “Holographic Particle Tracking Using Wigner-Ville Distribution,” Int. Symposium on Experimental Mechanics 2012.
 19.

 J. Widjaja, “Joint Transform Correlator Using JPEG-Compressed Reference Images,” Proc. SPIE 8769 (International Conference on Optics in Precision Engineering and Nanotechnology) (2013). doi:10.1117/12.2032090 (Invited paper)
 20.

U. Suripon and J. Widjaja, “Retinal recognition using compression-based joint transform correlator,” Proc. SPIE 8883 (International Conference on Photonics Solutions) (2013). doi:10.1117/12.2021772
Last Updated on Monday, 04 November 2013 03:45
 

 


Address: School of Laser Technology and Photonics, Institute of Science, Suranaree University of Technology
No. 111, University Avenue, Suranaree Sub district, Muang District, Nakhon Ratchasima Province, 30000 THAILAND, Tel (+66) 44 22 4194, (+66) 44 22 4187