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Publisher DOI: 10.3390/s20092678
Title: Concept for Markerless 6D Tracking Employing Volumetric Optical Coherence Tomography
Language: English
Authors: Schlüter, Matthias 
Glandorf, Lukas 
Gromniak, Martin 
Saathoff, Thore 
Schlaefer, Alexander 
Keywords: markerless tracking;tracking systems;optical coherence tomography;motion estimation
Issue Date: 8-May-2020
Publisher: Multidisciplinary Digital Publishing Institute
Source: Sensors 20 (9): 2678 (2020)
Journal or Series Name: Sensors 
Abstract (english): Optical tracking systems are widely used, for example, to navigate medical interventions. Typically, they require the presence of known geometrical structures, the placement of artificial markers, or a prominent texture on the target’s surface. In this work, we propose a 6D tracking approach employing volumetric optical coherence tomography (OCT) images. OCT has a micrometer-scale resolution and employs near-infrared light to penetrate few millimeters into, for example, tissue. Thereby, it provides sub-surface information which we use to track arbitrary targets, even with poorly structured surfaces, without requiring markers. Our proposed system can shift the OCT’s field-of-view in space and uses an adaptive correlation filter to estimate the motion at multiple locations on the target. This allows one to estimate the target’s position and orientation. We show that our approach is able to track translational motion with root-mean-squared errors below 0.25 mm and in-plane rotations with errors below 0.3°. For out-of-plane rotations, our prototypical system can achieve errors around 0.6°.
DOI: 10.15480/882.2773
ISSN: 1424-8220
Other Identifiers: doi: 10.3390/s20092678
Institute: Medizintechnische Systeme E-1 
Type: (wissenschaftlicher) Artikel
Funded by: partially funded by Forschungszentrum Medizintechnik Hamburg
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