I am a Research Assistant Professor at Northwestern University, IL. I graduated from the University of Erlangen-Nuremberg, Germany, where I received my Ph.D. degree with honors (‘summa cum laude’) in 2017. During my doctoral studies I investigated physical and information theoretical limits of optical 3D-sensing and implemented sensors that operate close to these limits. Concurrent to my activity at the Erlangen University, I was a freelancer in the research group’s spin-off company ‘3D Shape GmbH’ and I worked as a high school part time teacher for physics.
At Northwestern University, my students and I develop novel techniques to overcome traditional resolution limitations and dynamic range restrictions in 3D and 2D imaging. Moreover, my research is focused on new methods to image hidden objects through scattering media or around corners, high-resolution holographic displays, and the implementation of high precision metrology methods in low-cost mobile handheld devices.
In the Winter Quarter 2021, I teach ELEC_ENG 420: “Digital Image Processing” together with Prof. Oliver Cossairt. More info is available here and here.
PhD (Dr. rer. nat.) in Physics, 2017
FAU Erlangen-Nuremberg
MSc (Dipl.-Phys.) in Physics, 2010
FAU Erlangen-Nuremberg
Past and Present
A selection of my past and present research projects. Please request my CV for a full list. More projects will be added soon.
Fall Quarter
COMP_SCI 331: Introduction to Computational Photography
(co-taught with Prof. Oliver Cossairt)
See course website for more information
Winter Quarter
ELEC_ENG 420: Digital Image Processing
(co-taught with Prof. Oliver Cossairt)
See course website for more information
ELEC_ENG 395, 495: Computational Photography Seminar (not offered Winter 21)
(co-taught with Prof. Oliver Cossairt)
Please check my Google Scholar profile for the latest updates.
2020
Synthetic Wavelength Holography: Snapshot Non-Line-of-Sight Imaging with High-Resolution and Wide Field of View
F. Willomitzer, P. Rangarajan, F. Li, M. Balaji, M. Christensen, O. Cossairt.
Research Square Preprint
Hand-Guided Qualitative Deflectometry with a Mobile Device
F. Willomitzer, C-K. Yeh, V. Gupta, W. Spies, F. Schiffers, A. Katsaggelos, M. Walton, O. Cossairt.
Optics Express 28(7), 9027-9038
Exploiting Wavelength Diversity for High Resolution Time-of-Flight 3D Imaging
F. Li*, F. Willomitzer*, P. Rangarajan, O. Cossairt (* joint first authors).
arXiv Preprint
Intensity Interferometry-based 3D Imaging
F. Wagner, F. Schiffers, F. Willomitzer, O. Cossairt, A.Velten.
arXiv Preprint
Compressive Ghost Imaging through Scattering Media with Deep Learning
F. Li*, M. Zhao*, Z. Tian, F. Willomitzer, O. Cossairt (* joint first authors).
Optics Express 28(12), 17395-17408
WISHED: Wavefront Imaging Sensor with High resolution and Depth ranging
Y. Wu*, F. Li*, F. Willomitzer, A. Veeraraghavan, O. Cossairt (* joint first authors).
IEEE International Conference on Computational Photography (ICCP)
[Video]
Intensity interferometry-based depth ranging
F. Wagner, F. Schiffers, F. Willomitzer, O. Cossairt, A. Velten.
OSA Computational Optical Sensing and Imaging
Wavefront sensing based depth sensor for macroscopic objects
Y. Wu*, F. Li*, F. Willomitzer, A. Veeraraghavan, O. Cossairt (* joint first authors).
OSA Computational Optical Sensing and Imaging
2019
Synthetic Wavelength Holography: An Extension of Gabor’s Holographic Principle to Imaging with Scattered Wavefronts
F. Willomitzer, P. Rangarajan, F. Li, M. Balaji, M. Christensen, O. Cossairt.
arXiv Preprint
Spatially resolved Indirect Imaging of objects beyond the line of sight
P. Rangarajan, F. Willomitzer, O. Cossairt, MP. Christensen
Proc. SPIE 11135, Unconventional and Indirect Imaging, Image Reconstruction, and Wavefront Sensing 2019
Non-Line-of-Sight Imaging with Superheterodyne Remote Digital Holography
F. Willomitzer, F. Li, M.M. Balaji, P. Rangarajan, O. Cossairt
OSA Computational Optical Sensing and Imaging, CM2A. 2
3D Surface Measurement and Analysis of Works of Art
B. Xu, F. Willomitzer, C.-K. Yeh, F. Li, V. Gupta, J.E. Tumblin, M. Walton, O. Cossairt
53rd Asilomar Conference on Signals, Systems, and Computers
Speckle based Extended Depth-of-Field for Macroscopic Imaging: First results
F. Schiffers, F. Willomitzer, P. Ruiz, A.K. Katsaggelos, O. Cossairt
OSA Computational Optical Sensing and Imaging, CTh4A. 6
Mega-pixel time-of-flight imager with GHz modulation frequencies
F. Li, F. Willomitzer, P. Rangarajan, O. Cossairt.
OSA Computational Optical Sensing and Imaging, CTh2A. 2
Time-domain optical coherence tomography can measure artworks with high penetration and high resolution
B. Xu, K. He, P. Hao, J. Gao, F. Willomitzer, A.K. Katsaggelos, J.E. Tumblin, O. Cossairt, M. Walton.
SPIE Optics for Arts, Architecture, and Archaeology VII 11058, 110580M
2018
High Resolution Single-Shot 3D Imaging with the “3D movie camera”
F. Willomitzer, G. Häusler.
OSA 3D Image Acquisition and Display: Technology, Perception and Applications, 3M3G. 2
Micro Resolution Time-of-Flight Imaging
F. Li, F. Willomitzer, P. Rangarajan, A. Velten, M. Gupta, O. Cossairt.
OSA Computational Optical Sensing and Imaging, CM2E. 4
Non-Line-of-Sight Imaging using Superheterodyne Interferometry
F. Willomitzer, F. Li, M.M. Balaji, P. Rangarajan, O. Cossairt.
OSA Computational Optical Sensing and Imaging, CM2E. 1
SH-ToF: Micro Resolution Time-of-Flight Imaging with Superheterodyne Interferometry
F. Li, F. Willomitzer, P. Rangarajan, A. Velten, M. Gupta, O. Cossairt.
IEEE International Conference on Computational Photography (ICCP)
2017
Single-Shot 3D Sensing Close to Physical Limits and Information Limits
F. Willomitzer.
Dissertation, University Erlangen-Nuremberg, Published as book in the series “Springer Theses” in 2019
Single-shot 3D motion picture camera with a dense point cloud
F. Willomitzer, G. Häusler.
Optics Express 25(19), 23451-23464
2016
The 3D Motion Picture Camera - About Single-Shot, High Resolution 3D-Imaging
F. Willomitzer, G. Häusler.
Proceedings of the 117th DGaO Conference, Hannover, B4
2015
A stroll through 3D imaging and measurement
G. Häusler, F. Willomitzer
ICO Newsletter, No. 104
Towards the single-shot 3D movie camera
F. Willomitzer, F. Schiffers, M. Kuch, G. Häusler
Proceedings of the 116th DGaO Conference, Brno, A13.
Space-Bandwidth-Speed: the real challenge for optical 3D-sensors
G. Häusler, Z. Yang, F. Willomitzer
Proceedings of the 116th DGaO Conference, Brno, A7.
Single-shot 3D sensing with improved data density
F. Willomitzer, S. Ettl, C. Faber, G. Häusler.
Applied Optics, 54(3), 408-417
2014
Hand – guided 3D surface acquisition by combining simple light sectioning with real-time algorithms
O. Arold, S. Ettl, F. Willomitzer, G. Häusler
arXiv:1401.1946.
Consequences of EEG electrode position error on ultimate beamformer source reconstruction performance
S. S. Dalal, S. Rampp, F. Willomitzer, S. Ettl.
Frontiers in Neuroscience, 8(42), 1-7.
Light-sectioning with many lines - how to settle the information deficit
F. Willomitzer, S. Ettl, G. Häusler.
Proceedings of the 115th DGaO Conference, Karlsruhe, A21.
Plausibility-based approach to eliminate line pattern indexing ambiguities
S. Ettl, F. Willomitzer, G. Häusler.
Proceedings of the 115th DGaO Conference, Karlsruhe, A22.
Calibration of multi-line-light-sectioning
F. Schiffers, F. Willomitzer, S. Ettl, Z. Yang, G. Häusler.
Proceedings of the 115th DGaO Conference, Karlsruhe, P12.
Automated evaluation tools in medicine enabled by a motion-robust optical 3D sensor
S. Ettl, F. Schiffers, F. Willomitzer, S. Rampp, C. Strauss, G. Häusler.
Proceedings of the 115th DGaO Conference, Karlsruhe, P10.
Multi-line triangulation with many lines
M. Kuch, F. Willomitzer, F. Schiffers, Z. Yang, S. Ettl, G. Häusler.
Proceedings of the 115th DGaO Conference, Karlsruhe, P11 (poster award).
2013
Flying Triangulation – Towards the 3D Movie Camera
F. Willomitzer, S. Ettl, O. Arold, G. Häusler.
Fringe 2013, The 7th International Workshop on Advanced Optical Imaging & Metrology, W. Osten, Springer, Berlin, 895 898.
Detection and correction of line indexing ambiguities in Flying Triangulation
F. Willomitzer, S. Ettl, O. Arold, G. Häusler.
Proceedings of the 114th DGaO Conference, Braunschweig, A12.
Tomographic Triangulation
G. Häusler, F. Willomitzer, P. Dienstbier, C. Faber.
Proceedings of the 114th DGaO Conference, Braunschweig, A16.
Management of head motion during MEG recordings with Flying Triangulation
S. Ettl, A. Sadeghzadeh, F. Willomitzer, O. Arold, S. Rampp, H. Stefan, G. Häusler.
Proceedings of the 114th DGaO Conference, Braunschweig, A13.
Improved EEG source localization employing 3D sensing by “Flying Triangulation
S. Ettl, S. Rampp, S. Fouladi, S. S. Dalal, F. Willomitzer, O. Arold, H. Stefan, G. Häusler.
Proceedings SPIE 8791A, Videometrics, Range Imaging, and Applications XII, 8791-32.
Improved EEG source localization using a novel 3D sensor
S. Rampp, S. S. Dalal, F. Willomitzer, O. Arold, S. Fouladi-Movahed, G. Häusler, H. Stefan, S.Ettl.
Epilepsia 54, 264-265
2012
Flying Triangulation – a motion-robust optical 3D sensor for the real-time shape acquisition of complex objects.
F. Willomitzer, S. Ettl, O. Arold, G. Häusler.
Proceedings of the 3rd International Topical Meeting on Optical Sensing and Artificial Vision, Saint Petersburg, Russia, AIP Volume 1537,19-26.
Why can’t we purchase a perfect single shot 3D-sensor?
G. Häusler, C. Faber, F. Willomitzer, P. Dienstbier.
Proceedings of the 113th DGaO Conference, Eindhoven, A8.
Calibration of “Flying Triangulation”
M. Schröter, F. Willomitzer, O. Arold, S. Ettl, G. Häusler.
Proceedings of the 113th DGaO Conference, Eindhoven, P25.
Robust pattern indexing methods for “Flying Triangulation”
S. Ettl, F. Willomitzer, O. Arold, G. Häusler.
Proceedings of the 113th DGaO Conference, Eindhoven, P24.
Sparse active triangulation grids for respiratory motion management
S. Bauer, S. Ettl, J. Wasza, F. Willomitzer, F. Huber, J. Hornegger, G. Häusler.
Proceedings of the 112th DGaO Conference, Ilmenau, P23.
Koregistrierung von Elektroenzephalographie und Kernspintomographie mittels des optischen Sensorprinzips “Flying Triangulation” (German only)
S. Rampp, S. Ettl, S. Fouladi-Movahed, F. Willomitzer, O. Arold, H. Stefan, G. Häusler.
RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren (184).
Medical applications enabled by a motion-robust optical 3D sensor
S. Ettl, S. Fouladi-Mavahed, S. Bauer, O. Arold, F. Willomitzer, F. Huber, S. Rampp, H. Stefan, J. Hornegger, G. Häusler.
Proceedings of the 113th DGaO Conference, Eindhoven, P22.
2011
Options and limitations of “Flying Triangulation”
F. Willomitzer, O. Arold, F. Huber, S. Ettl, G. Häusler.
Proceedings of the 112th DGaO Conference, Ilmenau, P29.
3D body scanning with “Flying Triangulation”
F. Huber, O. Arold, F. Willomitzer, S. Ettl, G. Häusler.
Proceedings of the 112th DGaO Conference, Ilmenau, P30 (poster award).
2010
FlyFace – 3D face measurement with Flying Triangulation
F. Willomitzer
Diploma Thesis, University Erlangen-Nuremberg
„Flying Triangulation“ – Acquiring 360° Topography of the Human Body on the Fly
S. Ettl, O. Arold, F. Willomitzer, Z. Yang, G. Häusler.
Proceedings of the International Conference on 3D Body Scanning Technologies, Lugano, Switzerland, 279-284.
3D face scanning with “Flying Triangulation”
F. Willomitzer, Z. Yang, O. Arold, S. Ettl, G. Häusler.
Proceedings of the 111th DGaO Conference, Wetzlar, P18 (poster award).
Dr. Florian Willomitzer
florian [dot] willomitzer [at] northwestern [dot] edu
Northwestern University
Department of Computer Science
Seeley Mudd Building, Rm 3406
2233 Tech Drive, Evanston, IL 60208