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Vision-based markerless registration using stereo vision and an augmented reality surgical navigation system: a pilot
Hideyuki Suenaga1, Huy Hoang Tran2, Hongen Liao3,4
1Department of Oral-Maxillofacial Surgery, Dentistry and Orthodontics, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo ku, Tokyo, 113 8656, Japan. suenaga-tky@umin.ac.jp.
BMC Medical Imaging
|November 4, 2015
Summary
This study demonstrates a novel augmented reality (AR) system for markerless surgical navigation in oral surgery. The system uses stereo vision for accurate 3D image registration and display, with potential for significant clinical applications.
Area of Science:
- Medical Technology
- Surgical Navigation
- Augmented Reality
Background:
- Oral and maxillofacial surgery requires precise navigation.
- Existing navigation systems often rely on fiducial markers.
- Markerless registration offers a potential advancement.
Purpose of the Study:
- To evaluate an augmented reality (AR) navigation system with markerless registration using stereo vision.
- To assess the accuracy and feasibility of this system in oral surgery.
Main Methods:
- A feasibility study utilized stereo cameras for markerless tracking and registration.
- Computed tomography (CT) data was used to create 3D integral videography (IV) images.
- Patient-image registration was achieved through teeth matching using parallax images.
Main Results:
- The markerless system achieved accurate registration of patient anatomy with stereoscopic images (< 1 mm average target registration error).
- 3D-CT images were displayed in real space with high accuracy using AR, viewable from any angle without special glasses.
- Teeth contour matching enabled successful registration without fiducial markers.
Conclusions:
- Markerless registration and 3D image matching via stereo vision combined with AR show high accuracy.
- The system successfully displayed 3D-CT images in real space without references or fiducial markers.
- This technology holds significant potential for clinical applications in oral and maxillofacial surgery.
