Complete list of publications by year

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2023

Event-based Motion-Robust Accurate Shape Estimation for Mixed Reflectance Scenes
A. Dashpute, J. Wang, J. Taylor, O. Cossairt, A. Veeraraghavan, F. Willomitzer
ArXiv Preprint

Accurate Eye Tracking from Dense 3D Surface Reconstructions using Single-Shot Deflectometry
J. Wang, T. Wang, B. Xu, O. Cossairt, F. Willomitzer.
ArXiv Preprint

Optimization-Based Eye Tracking using Deflectometric Information
T. Wang, J. Wang, O. Cossairt, F. Willomitzer.
ArXiv Preprint

Whole-brain imaging of freely-moving zebrafish
H. Hasani, J. Sun, S. I. Zhu, Q. Rong, F. Willomitzer, R. Amor, G. McConnell, O. Cossairt, G. Goodhill
Frontiers in Neuroscience 17

Towards Synthetic Light-in-Flight
P. Cornwall, M.Ballester, H. Wang, F.Willomitzer
Optica Computational Optical Sensing and Imaging

Accurate and Fast VR Eye-Tracking using Deflectometric Information
J. Wang, T. Wang, B. Xu, O. Cossairt, F. Willomitzer.
Optica Computational Optical Sensing and Imaging

Deep Learning Method to Find Swanepoel Envelopes in Transmission Spectroscopy
M. Ballester, E. Marquez, A. P. Marquez, S. Lopez-Tapia, O. Cossairt, F. Willomitzer, A. Katsaggelos
Optica Computational Optical Sensing and Imaging

Dynamic High-Precision 3D Measurements with an Interferometric Single-Shot ToF Camera
M. Ballester*, H. Wang*, J. Li, O. Cossairt, F. Willomitzer (* joint first authors).
Optica Computational Optical Sensing and Imaging

Complex dielectric function of H-free a-Si films: Photovoltaic light absorber
E. Marquez, M. Ballester, M. Garcia, M. Cintado, A.P. Marquez, J.J. Ruiz, S.M. Fernández, E. Blanco, F. Willomitzer, A.K. Katsaggelos
Materials Letters 345, 134485

Thermal Spread Functions (TSF): Physics-guided Material Classification
A. Dashpute, V. Saragadam, E. Alexander, F. Willomitzer, A. Katsaggelos, A. Veeraraghavan, O. Cossairt
Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)

Complementary Characterization of Polycrystalline Copper-Nitride Films by UV-MIR (0.2-40 µm) Ellipsometry and FIB-SEM Microscopy
E. Márquez, E. Blanco, J. M. Manuel, M. Ballester, M. Garcia-Gurrea, M. I. Rodriguez-Tapiador, S. M. Fernandez, F. Willomitzer, A. K. Katsaggelos
Preprints

Mid-Infrared Complex Refractive Index Spectra of Polycrystalline Copper-Nitride Films by IR-VASE Ellipsometry and Their FIB-SEM Porosity
E. Márquez, E. Blanco, J. M. Manuel, M. Ballester, M. Garcia-Gurrea, S. M. Fernandez, M. I. Rodriguez-Tapiador, F. Willomitzer, A. K. Katsaggelos
Preprints

Parameterized Dielectric Function of Rf-Magnetron-Sputtered H-Free A-Si Thin Films: Photovoltaic-Cell Light Absorber
E. Márquez, M. Ballester, M. Garcia, M. Cintado, AP. Márquez, J. J. Ruiz, SM Fernández-Ruano, E. Blanco, F. Willomitzer, A. Katsaggelos
SSRN Preprint

Optimization-Based Eye Tracking using Deflectometric Information
T. Wang, J. Wang, O. Cossairt, F. Willomitzer.
Proceedings of the 124th DGaO Conference, Berlin, B7, 2023

Precise VR Eye Tracking using Single-Shot Deflectometry
J. Wang, T. Wang, B. Xu, O. Cossairt, F. Willomitzer.
Proceedings of the 124th DGaO Conference, Berlin, A31, 2023

Holographic Measurement of Surface Topography – Limits and New Options
G. Häusler, F. Willomitzer.
Proceedings of the 124th DGaO Conference, Berlin, B13, 2023

Dynamic High-Precision ToF Imaging utilizing Single-Shot Synthetic Wavelength Interferometry on Rough Surfaces
M. Ballester*, H. Wang*, J. Li, O. Cossairt, F. Willomitzer (* joint first authors).
Proceedings of the 124th DGaO Conference, Berlin, B14, 2023

How to archive the visual contents of aging analog film holograms?
J. Choi, A. Dashpute, B. Xu, O. Cossairt, M. Walton, J. Tumblin, F.Willomitzer
Proceedings of the 124th DGaO Conference, Berlin, B6, 2023

2022

Single-shot ToF sensing with sub-mm precision using conventional CMOS sensors
M. Ballester*, H. Wang*, J. Li, O. Cossairt, F. Willomitzer (* joint first authors).
ArXiv Preprint

Synthetic Wavelength Imaging - Utilizing Spectral Correlations for High-Precision Time-of-Flight Sensing
F. Willomitzer
Book Chapter Preprint

Reflections about the holographic and non-holographic acquisition of surface topography: where are the limits?
G. Häusler, F. Willomitzer
Light: Advanced Manufacturing 3(25), 2022

Easy and Flexible Calibration Approach for Deflectometry-based VR Eye-Tracking systems
J. Wang, B. Xu, O. Cossairt, F. Willomitzer
OSA Computational Optical Sensing and Imaging

Application of the Holomorphic Tauc-Lorentz-Urbach Function to Extract the Constants of Amorphous Semiconductor Thin Films
M. Ballester, M. García, A. P. Márquez, E. Blanco, S. M .Fernández, D. Minkov, A. K. Katsaggelos, O. Cossairt, F. Willomitzer, E. Márquez
Coatings 2022, 12(10), 1549

Energy-Band-Structure Calculation by Below-Band-Gap Spectrophotometry in Thin Layers of Non-Crystalline Semiconductors: A Case Study of Unhydrogenated A-Si
M. Ballester, AP. Márquez, C. Garcia Vazquez, JM. Díaz, E. Blanco, D. Minkov, SM. Fernández-Ruano, F. Willomitzer, O. Cossairt, E. Márquez
Journal of Non-Crystalline Solids (JNCS) 594, 121803

Can Deep Learning Assist Automatic Identification of Layered Pigments From XRF Data?
B. Xu, Y. Wu, P. Hao, M. Vermeulen, A. McGeachy, K. Smith, K. Eremin, G. Rayner, G. Verri, F. Willomitzer, M. Alfeld, J. Tumblin, A. Katsaggelos, M.Walton.
J. Anal. At. Spectrom., 2022

Computational optical sensing and imaging 2021: feature issue introduction
J. Ke, T. Alieva, F. S. Oktem, P. Silveira, G. Wetzstein, F. Willomitzer
Optics Express 30(7) and Applied Optics 61(9), 2022

SkinScan: 3D Dermatologic Diagnosis and Documentation with Commodity Devices
M. A. Nau, F. Schiffers, Y. Li, B. Xu, A. Maier, J. Tumblin, M. Walton, A. K. Katsaggelos, F. Willomitzer, O. Cossairt
55th Asilomar Conference on Signals, Systems, and Computers

Method and system for three-dimensional surface measurement with a mobile device
F. Willomitzer, O. Cossairt, M. Walton, C.-K. Yeh, V. Gupta, W. Spies, F. Schiffers
US Patent US11336883B2

Comparison of Optical Characterization Methods for Transmission Spectroscopy
M. Ballester, A. P. Márquez, S. Banerjee, J. J. Ruíz-Pérez, O. Cossairt, A. Katsaggelos, F. Willomitzer, E. Márquez.
OSA Computational Optical Sensing and Imaging

2021

Fast Non-Line-of-Sight Imaging with High-Resolution and Wide Field of View using Synthetic Wavelength Holography
F. Willomitzer, P. Rangarajan, F. Li, M. Balaji, M. Christensen, O. Cossairt.
Nature Communications 12, 6647 (2021)

Exploiting Wavelength Diversity for High Resolution Time-of-Flight 3D Imaging
F. Li*, F. Willomitzer*, M. Balaji, P. Rangarajan, O. Cossairt (* joint first authors).
IEEE Transactions on Pattern Analysis and Machine Intelligence (TPAMI)
[Video (YouTube)]

VR Eye-Tracking using Deflectometry
J. Wang*, B. Xu* (* joint first authors), T. Wang, W. Lee, M. Walton, N. Matsuda, O. Cossairt, F. Willomitzer.
OSA Computational Optical Sensing and Imaging

SkinScan: Low-Cost 3D-Scanning for Dermatologic Diagnosis and Documentation
M. A. Nau, F. Schiffers, Y. Li, B. Xu, A. Maier, J. Tumblin, M. Walton, A. K. Katsaggelos, F. Willomitzer, O. Cossairt
2021 IEEE International Conference on Image Processing (ICIP)

Characterizing the Immaterial. Noninvasive Imaging and Analysis of Stephen Benton’s Hologram Engine no. 9
M. Walton, P. Hao, M. Vermeulen, F. Willomitzer, O. Cossairt
To be published as book chapter in “Conserving Active Matter”, Peter Miller, Ed., BGC – Bard Graduate Center (Preprint on ArXiv 2021)

Intensity Interferometry-based 3D Imaging
F. Wagner, F. Schiffers, F. Willomitzer, O. Cossairt, A.Velten.
Optics Express 29(4), 4733-4745

A Mitsuba-based Study on Trade-offs Between Projectionand Reflection Based Systems in Structured-Light 3D Imaging
T. Wang, F. Schiffers, F. Willomitzer, O. Cossairt.
OSA Computational Optical Sensing and Imaging

Fast simulations in Computer-Generated Holograms for binary data storage
M. B. Matito, F. Schiffers, Z. Wang, H. Hasani, L. Fiske, P. Shedligeri, J. Tumblin, F. Willomitzer, A.Katsaggelos, O. Cossairt.
OSA Computational Optical Sensing and Imaging

A Low-Cost Solution for 3D Reconstruction of Large-Scale Specular Objects
Y. Li, C. Yeh, B. Xu, F. Schiffers, M. Walton, J. Tumblin, A. Katsaggelos, F. Willomitzer, O. Cossairt.
OSA Computational Optical Sensing and Imaging

2020

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

Low-budget 3D scanning and material estimation using PyTorch3D
O. Cossairt, F. Willomitzer, C.-K. Yeh, M. Walton.
54th IEEE Asilomar Conference on Signals, Systems and Computers

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 (YouTube)]

Main module, system and method for self-examination of a user’s eye
A. Maier, G. Häusler, A. Milczarek, T. Geimer, M. Schreiter, T. Kaestner, F. Willomitzer
US Patent 10,709,328

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

Optical 3-D sensor for fast and dense shape capture
F. Willomitzer
US Patent 10,404,967

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

Micro resolution imaging range sensor system
O. Cossairt, F. Li , F. Willomitzer, P. Rangarajan
US Patent App. 16 / 367,532

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 IEEE 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).