Joel Alter Greenberg
Associate Research Professor in the Department of Electrical and Computer Engineering
Dr. Greenberg's research is in the area of computational imaging with a focus on physics-based modeling and system-level design from fundamental science through algorithm implementation. His work spans the electromagnetic spectrum, with a focus on X-ray and visible imaging and detection systems for security and medical applications.
Current Research Interests
Computational sensing with a focus on novel, physics-based measurement techniques for practical applications. Primarily focused in the electromagnetic/optical spectrum ranging from ELF through visible and hard X-rays, with applications to security, non-destructive testing, and medical imaging. Investigations range from basic science (e.g. fundamental studies in material science, optics, and information science) to applied and transitional work (e.g. design and implementation of architectures at the system level targeted at particular, real-world problems)
Current Appointments & Affiliations
- Associate Research Professor in the Department of Electrical and Computer Engineering, Electrical and Computer Engineering, Pratt School of Engineering 2019
Contact Information
- Box 90291, Durham, NC 27708-0305
- Box 90291, Dept of Ece, Durham, NC 27708
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joel.greenberg@duke.edu
(919) 660-0183
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Greenberg Research Website
- Background
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Education, Training, & Certifications
- Ph.D., Duke University 2012
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Duke Appointment History
- Assistant Research Professor in the Department of Electrical and Computer Engineering, Electrical and Computer Engineering, Pratt School of Engineering 2015 - 2019
- Recognition
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In the News
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DEC 13, 2018 Triangle Business Journal -
DEC 10, 2018 Pratt School of Engineering -
DEC 7, 2018 -
SEP 27, 2018
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- Research
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Selected Grants
- Characterizing, modeling, and mitigating texturing in X-ray diffraction imaging Phase 2, Year 6 awarded by Northeastern University 2017 - 2020
- Information-theoretic informed design of advanced x-ray explosive threat detection systems awarded by University of Arizona 2017 - 2020
- Advancing Magnetization and Polarization Low Frequency Imaging (AMPLiFI) awarded by Defense Advanced Research Projects Agency 2017 - 2020
- Rapid X-ray diffraction imaging for improved tissue analysis in pathologic applications 2017 - 2019
- Characterizing, modeling, and mitigating texturing in X-ray diffraction imaging awarded by Northeastern University 2017
- Information-theoretic informed design of advanced x-ray explosive threat detection systems awarded by University of Arizona 2014 - 2017
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External Relationships
- Quadridox, Inc.
- Publications & Artistic Works
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Selected Publications
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Academic Articles
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Li, X., J. A. Greenberg, and M. E. Gehm. “Single-shot multispectral imaging through a thin scatterer.” Optica 6, no. 7 (July 20, 2019): 864–71. https://doi.org/10.1364/OPTICA.6.000864.Full Text
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Gong, Q., J. A. Greenberg, R. I. Stoian, D. Coccarelli, E. Vera, and M. E. Gehm. “Rapid simulation of X-ray scatter measurements for threat detection via GPU-based ray-tracing.” Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions With Materials and Atoms 449 (June 15, 2019): 86–93. https://doi.org/10.1016/j.nimb.2019.03.006.Full Text
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Li, Xiaohan, Andrew Stevens, Joel A. Greenberg, and Michael E. Gehm. “Single-shot memory-effect video.” Scientific Reports 8, no. 1 (September 7, 2018): 13402. https://doi.org/10.1038/s41598-018-31697-8.Full Text
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Gong, Q., R. I. Stoian, D. S. Coccarelli, J. A. Greenberg, E. Vera, and M. E. Gehm. “Rapid simulation of X-ray transmission imaging for baggage inspection via GPU-based ray-tracing.” Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions With Materials and Atoms 415 (January 15, 2018): 100–109. https://doi.org/10.1016/j.nimb.2017.09.035.Full Text
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Zhu, Zheyuan, Alexander Katsevich, Anuj J. Kapadia, Joel A. Greenberg, and Shuo Pang. “X-ray diffraction tomography with limited projection information.” Sci Rep 8, no. 1 (January 11, 2018): 522. https://doi.org/10.1038/s41598-017-19089-w.Full Text Link to Item
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Lakshmanan, Manu N., Joel A. Greenberg, Ehsan Samei, and Anuj J. Kapadia. “Accuracy assessment and characterization of x-ray coded aperture coherent scatter spectral imaging for breast cancer classification.” J Med Imaging (Bellingham) 4, no. 1 (January 2017): 013505. https://doi.org/10.1117/1.JMI.4.1.013505.Full Text Link to Item
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Hassan, Mehadi, Joel A. Greenberg, Ikenna Odinaka, and David J. Brady. “Snapshot fan beam coded aperture coherent scatter tomography.” Optics Express 24, no. 16 (August 2016): 18277–89. https://doi.org/10.1364/oe.24.018277.Full Text
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Lakshmanan, Manu N., Joel A. Greenberg, Ehsan Samei, and Anuj J. Kapadia. “Design and implementation of coded aperture coherent scatter spectral imaging of cancerous and healthy breast tissue samples.” J Med Imaging (Bellingham) 3, no. 1 (January 2016): 013505. https://doi.org/10.1117/1.JMI.3.1.013505.Full Text Link to Item
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Wang, L., J. Huang, X. Yuan, K. Krishnamurthy, J. Greenberg, V. Cevher, M. R. D. Rodrigues, D. Brady, R. Calderbank, and L. Carin. “Signal recovery and system calibration from multiple compressive poisson measurements.” Siam Journal on Imaging Sciences 8, no. 3 (September 17, 2015): 1923–54. https://doi.org/10.1137/140998779.Full Text
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Pang, Shuo, Mehadi Hassan, Joel Greenberg, Andrew Holmgren, Kalyani Krishnamurthy, and David Brady. “Complementary coded apertures for 4-dimensional x-ray coherent scatter imaging.” Optics Express 22, no. 19 (September 2014): 22925–36. https://doi.org/10.1364/oe.22.022925.Full Text
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Zhu, Yunhui, Joel A. Greenberg, Nor Ain Husein, and Daniel J. Gauthier. “Giant all-optical tunable group velocity dispersion in an optical fiber.” Optics Express 22, no. 12 (June 2014): 14382–91. https://doi.org/10.1364/oe.22.014382.Full Text
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Greenberg, Joel A., Mehadi Hassan, Kalyani Krishnamurthy, and David Brady. “Structured illumination for tomographic X-ray diffraction imaging.” The Analyst 139, no. 4 (February 2014): 709–13. https://doi.org/10.1039/c3an01641b.Full Text
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Greenberg, J. A., and D. J. Brady. “Structured illumination for compressive x-ray diffraction tomography.” Proceedings of Spie the International Society for Optical Engineering 9020 (January 1, 2014). https://doi.org/10.1117/12.2048264.Full Text
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Greenberg, J., K. Krishnamurthy, and D. Brady. “Compressive single-pixel snapshot x-ray diffraction imaging.” Optics Letters 39, no. 1 (January 1, 2014): 111–14. https://doi.org/10.1364/OL.39.000111.Full Text
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Greenberg, J. A., K. Krishnamurthy, M. Lakshmanan, K. MacCabe, S. Wolter, A. Kapadia, and D. Brady. “Coding and sampling for compressive x-ray diffraction tomography.” Proceedings of Spie the International Society for Optical Engineering 8858 (December 9, 2013). https://doi.org/10.1117/12.2027128.Full Text
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Gauthier, D. J., B. L. Schmittberger, and J. A. Greenberg. “Transverse optical patterns for low-light-level optical switching.” Optics Infobase Conference Papers, December 1, 2013.
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Schmittberger, B. L., J. A. Greenberg, and D. J. Gauthier. “Ultra-low-threshold optical pattern formation in a cold atomic vapor.” Optics Infobase Conference Papers, December 1, 2013.
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Greenberg, Joel A., Kalyani Krishnamurthy, and David Brady. “Snapshot molecular imaging using coded energy-sensitive detection.” Optics Express 21, no. 21 (October 2013): 25480–91. https://doi.org/10.1364/oe.21.025480.Full Text
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MacCabe, K. P., A. D. Holmgren, J. A. Greenberg, and D. J. Brady. “Coding for X-ray scatter imaging.” Optics Infobase Conference Papers, January 1, 2013.
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Schmittberger, B. L., J. A. Greenberg, and D. J. Gauthier. “Ultra-low-threshold optical pattern formation in a cold atomic vapor.” 2013 Conference on Lasers and Electro Optics Europe and International Quantum Electronics Conference, Cleo/Europe Iqec 2013, January 1, 2013. https://doi.org/10.1109/CLEOE-IQEC.2013.6801811.Full Text
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Greenberg, J. A., and D. J. Gauthier. “Steady-state, cavityless, multimode superradiance in a cold vapor.” Physical Review a Atomic, Molecular, and Optical Physics 86, no. 1 (July 17, 2012). https://doi.org/10.1103/PhysRevA.86.013823.Full Text
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Greenberg, J. A., and D. J. Gauthier. “High-order optical nonlinearity at low light levels.” Epl 98, no. 2 (April 1, 2012). https://doi.org/10.1209/0295-5075/98/24001.Full Text
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Greenberg, Joel A., Bonnie L. Schmittberger, and Daniel J. Gauthier. “Bunching-induced optical nonlinearity and instability in cold atoms [Invited].” Opt Express 19, no. 23 (November 7, 2011): 22535–49. https://doi.org/10.1364/OE.19.022535.Full Text Open Access Copy Link to Item
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Zhang, R., J. A. Greenberg, M. C. Fischer, and D. J. Gauthier. “Controllable ultrabroadband slow light in a warm rubidium vapor.” Journal of the Optical Society of America B: Optical Physics 28, no. 11 (2011): 2578–83. https://doi.org/10.1364/JOSAB.28.002578.Full Text Open Access Copy
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Gauthier, D. J., and J. A. Greenberg. “Toward single-photon nonlinear optics via self-assembled ultracold atoms.” Optics Infobase Conference Papers, December 1, 2010.
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Greenberg, J. A., and D. J. Gauthier. “Self-phase matched four-wave mixing in cold vapor.” Optics Infobase Conference Papers, December 1, 2010.
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Greenberg, J. A., and D. J. Gauthier. “Superradiance in an ultracold thermal vapor.” Optics Infobase Conference Papers, January 1, 2009.
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Ma, Long-Sheng, Peter Jungner, Jun Ye, and John L. Hall. “Accurate cancellation (to milliHertz levels) of optical phase noise due to vibration or insertion phase in fiber-transmitted light.” Laser Frequency Stabilization and Noise Reduction, April 26, 1995. https://doi.org/10.1117/12.208231.Full Text
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Conference Papers
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Brumbaugh, K., C. Royse, C. Gregory, K. Roe, J. A. Greenberg, and S. O. Diallo. “Material classification using convolution neural network (CNN) for X-ray based coded aperture diffraction system.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 10999, 2019. https://doi.org/10.1117/12.2519983.Full Text
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Carpenter, J. H., Y. Ding, A. Hurlock, D. Coccarelli, C. Gregory, S. O. Diallo, A. Ashok, M. E. Gehm, and J. A. Greenberg. “Motivations and methods for the analysis of multi-modality X-ray systems for explosives detection.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 10999, 2019. https://doi.org/10.1117/12.2518781.Full Text
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Coccarelli, D., A. Hurlock, C. Royse, J. H. Carpenter, J. A. Greenberg, E. Johnson, C. Bosch, and M. E. Gehm. “Modeling real world system geometry and detector response within a high-throughput X-ray simulation framework.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 10999, 2019. https://doi.org/10.1117/12.2518870.Full Text
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Hazineh, D. S., and J. A. Greenberg. “Coding versus collimation in pencil-beam X-ray diffraction tomography.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 10999, 2019. https://doi.org/10.1117/12.2519469.Full Text
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Royse, C., S. Wolter, and J. A. Greenberg. “Emergence and distinction of classes in XRD data via machine learning.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 10999, 2019. https://doi.org/10.1117/12.2519500.Full Text
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Coccarelli, D., J. A. Greenberg, R. Thamvichai, J. Voris, A. Masoudi, A. Ashok, and M. Gehm. “An information theoretic approach to system optimization accounting for material variability.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 10632, 2018. https://doi.org/10.1117/12.2305227.Full Text
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Diallo, S. O., K. Tadlock, C. Gregory, S. Wolter, J. A. Greenberg, and K. Roe. “Towards an X-ray-based coded aperture diffraction system for bulk material identification.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 10632, 2018. https://doi.org/10.1117/12.2302513.Full Text
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Greenberg, J. A., C. MacGibbon, D. Hazineh, B. Keohane, and S. Wolter. “The role of texturing in X-ray diffraction tomography.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 10632, 2018. https://doi.org/10.1117/12.2303620.Full Text
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Zhao, B., S. Wolter, and J. A. Greenberg. “Application of machine learning to X-ray diffraction-based classification.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 10632, 2018. https://doi.org/10.1117/12.2304683.Full Text
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Coccarelli, D., J. A. Greenberg, S. Mandava, Q. Gong, L. C. Huang, A. Ashok, and M. E. Gehm. “Creating an experimental testbed for information-theoretic analysis of architectures for x-ray anomaly detection.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 10187, 2017. https://doi.org/10.1117/12.2263033.Full Text
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Greenberg, J. A., M. Hassan, B. Regnerus, and S. Wolter. “Design and implementation of a fan beam coded aperture x-ray diffraction tomography system for checkpoint baggage scanning.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 10187, 2017. https://doi.org/10.1117/12.2263152.Full Text
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Li, X., A. Stevens, J. A. Greenberg, and M. E. Gehm. “Dynamically coded memory effect imaging.” In Optics Infobase Conference Papers, Vol. Part F46-COSI 2017, 2017. https://doi.org/10.1364/COSI.2017.CM3B.2.Full Text
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Mandava, S., D. Coccarelli, J. A. Greenberg, M. E. Gehm, A. Ashok, and A. Bilgin. “Image reconstruction for view-limited x-ray CT in baggage scanning.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 10187, 2017. https://doi.org/10.1117/12.2265491.Full Text
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Spencer, J. R., J. E. Carter, C. K. Leung, S. J. McCall, J. A. Greenberg, and A. J. Kapadia. “Coded aperture coherent scatter spectral imaging for assessment of breast cancers: An ex-vivo demonstration.” In Progress in Biomedical Optics and Imaging Proceedings of Spie, Vol. 10132, 2017. https://doi.org/10.1117/12.2253975.Full Text
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Yuan, S., S. D. Wolter, and J. A. Greenberg. “Classification-free threat detection based on material-science-informed clustering.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 10187, 2017. https://doi.org/10.1117/12.2262942.Full Text
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Odinaka, I., Y. Kaganovsky, J. A. Greenberg, M. Hassan, D. G. Politte, J. A. O’Sullivan, L. Carin, and D. J. Brady. “Spectrally grouped total variation reconstruction for scatter imaging using ADMM.” In 2015 Ieee Nuclear Science Symposium and Medical Imaging Conference, Nss/Mic 2015, 2016. https://doi.org/10.1109/NSSMIC.2015.7582220.Full Text
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Greenberg, J., K. Iniewski, and D. Brady. “CZT detector modeling for coded aperture X-ray diffraction imaging applications.” In 2014 Ieee Nuclear Science Symposium and Medical Imaging Conference, Nss/Mic 2014, 2016. https://doi.org/10.1109/NSSMIC.2014.7431271.Full Text
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Coccarelli, D., Q. Gong, R. I. Stoian, J. A. Greenberg, M. E. Gehm, Y. Lin, L. C. Huang, and A. Ashok. “Information-theoretic analysis of x-ray scatter and phase architectures for anomaly detection.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 9847, 2016. https://doi.org/10.1117/12.2223175.Full Text
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Gong, Q., D. Coccarelli, R. I. Stoian, J. Greenberg, E. Vera, and M. Gehm. “Rapid GPU-based simulation of x-ray transmission, scatter, and phase measurements for threat detection systems.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 9847, 2016. https://doi.org/10.1117/12.2223244.Full Text
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Greenberg, J. A., M. Hassan, D. J. Brady, and K. Iniewski. “High precision, medium flux rate CZT spectroscopy for coherent scatter imaging.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 9847, 2016. https://doi.org/10.1117/12.2221913.Full Text
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Greenberg, J. A., and D. J. Brady. “Snapshot full-volume coded aperture x-ray diffraction tomography.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 9847, 2016. https://doi.org/10.1117/12.2223838.Full Text
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Hassan, M., A. Holmgren, J. A. Greenberg, I. Odinaka, and D. Brady. “Impact of detector geometry for compressive fan beam snapshot coherent scatter imaging.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 9847, 2016. https://doi.org/10.1117/12.2224797.Full Text
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Holmgren, A. D., I. Odinaka, J. A. Greenberg, and D. J. Brady. “Multi-view coded aperture coherent scatter tomography.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 9847, 2016. https://doi.org/10.1117/12.2223871.Full Text
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Lakshmanan, M. N., R. E. Morris, J. A. Greenberg, E. Samei, and A. J. Kapadia. “Coded aperture coherent scatter imaging for breast cancer detection: A Monte Carlo evaluation.” In Progress in Biomedical Optics and Imaging Proceedings of Spie, Vol. 9783, 2016. https://doi.org/10.1117/12.2216482.Full Text
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Morris, R. E., K. E. Albanese, M. N. Lakshmanan, S. J. McCall, J. A. Greenberg, and A. J. Kapadia. “Validation of coded aperture coherent scatter spectral imaging for normal and neoplastic breast tissues via surgical pathology.” In Progress in Biomedical Optics and Imaging Proceedings of Spie, Vol. 9783, 2016. https://doi.org/10.1117/12.2216974.Full Text
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Odinaka, I., J. A. Greenberg, Y. Kaganovsky, A. Holmgren, M. Hassan, D. G. Politte, J. A. O’Sullivan, L. Carin, and D. J. Brady. “Coded aperture x-ray diffraction imaging with transmission computed tomography side-information.” In Progress in Biomedical Optics and Imaging Proceedings of Spie, Vol. 9783, 2016. https://doi.org/10.1117/12.2216915.Full Text
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Odinaka, I., Y. Kaganovsky, J. A. O’Sullivan, D. G. Politte, A. D. Holmgren, J. A. Greenberg, L. Carin, and D. J. Brady. “Domain and range decomposition methods for coded aperture x-ray coherent scatter imaging.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 9847, 2016. https://doi.org/10.1117/12.2224265.Full Text
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Wolter, S. D., and J. A. Greenberg. “Spectral feature variations in x-ray diffraction imaging systems.” In Proceedings of Spie the International Society for Optical Engineering, Vol. 9847, 2016. https://doi.org/10.1117/12.2224171.Full Text
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Greenberg, J. A. “X-ray scatter imaging applications in medicine,” 2015.
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Greenberg, J. A., M. N. Lakshmanan, D. J. Brady, and A. J. Kapadia. “Optimization of a coded aperture coherent scatter spectral imaging system for medical imaging.” In Progress in Biomedical Optics and Imaging Proceedings of Spie, Vol. 9412, 2015. https://doi.org/10.1117/12.2082110.Full Text
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Lakshmanan, M. N., J. A. Greenberg, E. Samei, and A. J. Kapadia. “Experimental implementation of coded aperture coherent scatter spectral imaging of cancerous and healthy breast tissue samples.” In Progress in Biomedical Optics and Imaging Proceedings of Spie, Vol. 9412, 2015. https://doi.org/10.1117/12.2082318.Full Text
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Greenberg, J. A. “Practical tabletop X-ray scatter tomography,” 2014.
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Greenberg, J. A. “Steady-state superradiance via emergent order in a cold atomic vapor,” 2014.
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Greenberg, J. A., S. Pang, K. Krishnamurthy, and D. Brady. “Structured illumination for compressive x-ray diffraction tomography,” 2014.
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Greenberg, J. A. “Coding and sampling for compressive tomography,” 2013.
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Greenberg, J. A. “Real-time volumetric molecular imaging using coded apertures,” 2013.
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Greenberg, J. A., and D. J. Gauthier. “Self-phase matched four-wave mixing in cold vapor,” 2010.
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Greenberg, J. A., and D. J. Gauthier. “Super-charging nonlinear optical processes via cooperative effects,” 2010.
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Greenberg, J. A. “Superradiance in an Ultracold Thermal Vapor,” 2009.
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Greenberg, J. A., and D. J. Gauthier. “Transient Enhancement of the Nonlinear Atom-photon Coupling via Recoil-induced Resonances,” 2009.
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Greenberg, J. A., and D. J. Gauthier. “Investigation of the Saturation Mechanism of Recoil-induced Resonances,” 2008.
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- Teaching & Mentoring
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Recent Courses
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