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Deep Learning-based AR Glasses and Head Tracking for Automotive Augmented Reality

  • In recent years, Augmented Reality has made its way into everyday devices. Most smartphones are AR-enabled, providing applications like pedestrian navigation, Point of Interest highlighting, gaming, and retail. The high-tech industry has been focused on developing smartglasses to present virtual elements directly in front of the viewers’ eyes, allowing more immersive AR experiences. Smartglasses can also be deployed while driving for an enhanced and more safe experience. A 3D registered augmentation of the real world with navigation arrows, lane highlighting, or warnings can decrease the duration of inattentiveness regarding driving due to glancing at other screens. Enabling HMDs’ usage inside cars requires knowing its exact position and orientation (6-DoF pose) in the car. This necessitates sensors either built inside the AR glasses or the car. In a car, the latter option called outside-in tracking is more attractive due to two reasons. First, AR glasses containing different sensor sets exist, hampering finding one single solution for different HMDs. Second, the view from the driver’s perspective combines static interior and dynamic exterior features, complicating finding a reliable set of features. Nowadays, tracking methods utilize Deep Learning for a more generalizable and accurate derivation of the 6-DoF pose. They achieve outstanding results for head and object pose estimation. In this thesis, we present Deep Learning-based in-car 6-DoF AR glasses pose estimation approaches. The goal of the work is an exploration of accurate HMD pose estimation with the help of neural networks. The thesis achieves this by investigating numerous pose estimation techniques. Evaluations on the recorded HMDPose dataset constitute the foundation for this, consisting of infrared images of drivers wearing different HMD models. First, algorithms based on images are derived and evaluated on the dataset. For comparison, we carried out an evaluation on image-based methods considering time information. Further, pose estimation based on point clouds, generated out of infrared images, are analyzed. An investigation of various head pose estimation methods to derive its potential use are conducted. In conclusion, we introduce several highly accurate AR glasses pose estimators. The HMD pose alone achieves better results than the head pose and the combination of the head and HMD. Especially our image-based methods with optional usage of time information can efficiently and accurately regress the AR glasses pose. Our algorithms show excellent estimation results on live data when deployed inside a car, making seamless in-car HMD usage possible in the future.

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Metadaten
Author:Ahmet Firintepe
URN:urn:nbn:de:hbz:386-kluedo-69650
DOI:https://doi.org/10.26204/KLUEDO/6965
Advisor:Didier Stricker
Document Type:Doctoral Thesis
Language of publication:English
Publication Date:2022/10/13
Year of Publication:2022
Publishing Institute:Technische Universität Kaiserslautern
Granting Institute:Technische Universität Kaiserslautern
Acceptance Date of the Thesis:2022/09/12
Date of the Publication (Server):2022/10/14
Number of page:159
Faculties / Organisational entities:Fachbereich Informatik
DDC-Cassification:0 Allgemeines, Informatik, Informationswissenschaft / 004 Informatik
Licence (German):Creative Commons 4.0 - Namensnennung, nicht kommerziell, keine Bearbeitung (CC BY-NC-ND 4.0)