Flying Triangulation

Flying Triangulation

A handheld motion robust 3D scanner

Flying Triangulation is a sensor concept for motion robust high precision optical 3D imaging. A line triangulation sensor projecting ~10 straight narrow lines is paired with sophisticated real-time registration algorithms. Along each projected line, a nearly perfect 3D profile of the object surface is created within only one camera frame (‘single-shot’). Captured sparse 3D line profiles are registered to each other ‘on-the-fly’ while the sensor is free-hand guided around the object or the object is moved in front of the sensor (see videos). The result is a dense 3D model of the object with extremely high depth precision (under 30 μm for the shown dental scanner).



Videos

Flying Triangulation Dental Scanner


Flying Triangulation Face Scanner


3D models measured with Flying Triangulation (no post processing).


Interview Flying Triangulation (March 2013 - German with english subtitles).


360° scan of a plaster bust.


Related Publications - Flying Triangulation general

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.

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.

Single-shot 3D sensing with improved data density
F. Willomitzer, S. Ettl, C. Faber, G. Häusler.
Applied Optics, 54(3), 408-417

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.

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.

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.

Options and limitations of “Flying Triangulation”
F. Willomitzer, O. Arold, F. Huber, S. Ettl, G. Häusler.
Proceedings of the 112th DGaO Conference, Ilmenau, P29.

FlyFace – 3D face measurement with Flying Triangulation
F. Willomitzer
Diploma Thesis, University Erlangen-Nuremberg


Related Publications - Medical applications of Flying Triangulation

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.

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.

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.

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.

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.

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.

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).

„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).

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Florian Willomitzer
Research Assistant Professor