Automatic landmark identification for surgical 3d-navigation – A proposed method for marker-free dental surgical navigation systems

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Authors
Author (Corporation)
Publication date
04.07.2022
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01A - Journal article
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Parent work
Biomedical Engineering / Biomedizinische Technik
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DOI of the original publication
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Series
Series number
Volume
67
Issue / Number
5
Pages / Duration
411-417
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Publisher / Publishing institution
De Gruyter
Place of publication / Event location
Berlin
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Abstract
This paper proposes a conceptual method to calculate the pose of a stereo-vision camera relative to an artificial mandible without additional markers. The general method for marker-free navigation has four steps: 1) parallel image acquisition by a stereo-vision camera, 2) automatic identification of 2d point pairs (landmark pairs) in a left and a right image, 3) calculation of related 3d points in the joint camera coordinate system and 4) matching of 3d points generated to a preoperative 3d model (i.e., CT data based). To identify and compare landmarks in the acquired stereo images, well-known algorithms for landmark detection, description and matching were compared within the developed approach. Finally, the BRISK algorithm (Leutenegger S, Chli M, Siegwart RY. BRISK: Binary Robust invariant scalable keypoints. Proceedings of the IEEE International Conference on Computer Vision; 2011: 2548–2555) was used. The proposed method was implemented in MATLAB and validated with one artificial mandible. The accuracy evaluation of the camera positions calculated resulted in an average deviation error of 1.45 mm ± 0.76 mm to the real camera displacement. This value was calculated using only stereo images with over 100 reconstructed landmark pairs each. This provides the basis for marker-free navigation.
Keywords
computer assisted surgery, computer vision, image-matching, registration, stereovision
Subject (DDC)
500 - Naturwissenschaften
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ISSN
0013-5585
1862-278X
Language
English
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Yes
Strategic action fields FHNW
Publication status
Published
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Peer review of the complete publication
Open access category
Closed
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Citation
BISCHOFBERGER, Micha, Erik SCHKOMMODAU und Stephan BÖHRINGER, 2022. Automatic landmark identification for surgical 3d-navigation – A proposed method for marker-free dental surgical navigation systems. Biomedical Engineering / Biomedizinische Technik. 4 Juli 2022. Bd. 67, Nr. 5, S. 411–417. DOI 10.1515/bmt-2021-0307. Verfügbar unter: https://irf.fhnw.ch/handle/11654/33936