NavOScan: hassle-free handheld 3D scanning with automatic multi-view registration based on combined optical and inertial pose estimation

C. Munkelt; B. Kleiner; T. Thorhallsson; C. Mendoza; C. Bräuer-Burchardt; P. Kühmstedt; G. Notni

doi:10.1117/12.2020759

30 May 2013 NavOScan: hassle-free handheld 3D scanning with automatic multi-view registration based on combined optical and inertial pose estimation

C. Munkelt, B. Kleiner, T. Thorhallsson, C. Mendoza, C. Bräuer-Burchardt, P. Kühmstedt, G. Notni

Author Affiliations +

Proceedings Volume 8790, Optics for Arts, Architecture, and Archaeology IV; 87901A (2013) https://doi.org/10.1117/12.2020759
Event: SPIE Optical Metrology 2013, 2013, Munich, Germany

Abstract

Portable 3D scanners with low measurement uncertainty are ideally suited for capturing the 3D shape of objects right in their natural environment. However, elaborate manual post processing was usually necessary to build a complete 3D model from several overlapping scans (multiple views), or expensive or complex additional hardware (like trackers etc.) was needed. On the contrary, the NavOScan project[1] aims at fully automatic multi-view 3D scan assembly through a Navigation Unit attached to the scanner. This light weight device combines an optical tracking system with an inertial measurement unit (IMU) for robust relative scanner position estimation. The IMU provides robustness against swift scanner movements during view changes, while the wide angle, high dynamic range (HDR) optical tracker focused on the measurement object and its background ensures accurate sensor position estimations. The underlying software framework, partly implemented in hardware (FPGA) for performance reasons, fusions both data streams in real time and estimates the navigation unit’s current pose. Using this pose to calculate the starting solution of the Iterative Closest Point registration approach allows for automatic registration of multiple 3D scans. After finishing the individual scans required to fully acquire the object in question, the operator is readily presented with its finalized complete 3D model! The paper presents an overview over the NavOScan architecture, highlights key aspects of the registration and navigation pipeline and shows several measurement examples obtained with the Navigation Unit attached to a hand held structured-light 3D scanner.

Citation Download Citation

C. Munkelt, B. Kleiner, T. Thorhallsson, C. Mendoza, C. Bräuer-Burchardt, P. Kühmstedt, and G. Notni "NavOScan: hassle-free handheld 3D scanning with automatic multi-view registration based on combined optical and inertial pose estimation", Proc. SPIE 8790, Optics for Arts, Architecture, and Archaeology IV, 87901A (30 May 2013); https://doi.org/10.1117/12.2020759

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