Abstract
Oral and maxillofacial surgery demands high precision navigation to achieve optimal surgical outcomes. Augmented reality (AR) has been a promising solution for intuitive and accurate guidance, whereas existing systems have room for improvement. We propose a high quality and accurate in situ AR navigation system. Enhanced image quality is achieved by deploying eye tracking in lenticular-based autostereoscopic display. Viewpoint tracking and optical tracking are integrated to assure accurate in situ images. The proposed system can provide in situ AR images in real-time, with a viewing angle of 59.5°×49.1°, 3D image resolution of 0.35×0.21mm, and image accuracy of 0.99±0.70mm. A maxillary drilling experiment obtains average position error of 1.12±0.30mm and localization time of 8.7±3.9s, significantly better than conventional 2D navigation system. The proposed system can display high-quality AR images and therefore reduce positioning error and operating time.
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