Imaging Components, Systems, and Processing

L-split marker for augmented reality in aircraft assembly

[+] Author Affiliations
Pengfei Han

Beihang University, Beijing Key Laboratory of Aircraft Assembly & Robotics Equipment Technology, Xueyuan Road No. 37, Beijing 100191, China

School of Mechanical Engineering and Automation of Beihang University, Xueyuan Road No. 37, Beijing 100191, China

Gang Zhao

School of Mechanical Engineering and Automation of Beihang University, Xueyuan Road No. 37, Beijing 100191, China

Beihang University, State Key Laboratory of Virtual Reality Technology and Systems, Xueyuan Road No. 37, Beijing 100191, China

Opt. Eng. 55(4), 043110 (Apr 29, 2016). doi:10.1117/1.OE.55.4.043110
History: Received December 23, 2015; Accepted April 11, 2016
Text Size: A A A

Abstract.  In order to improve the performance of conventional square markers widely used by marker-based augmented reality systems in aircraft assembly environments, an L-split marker is proposed. Every marker consists of four separate L-shaped parts and each of them contains partial information about the marker. Geometric features of the L-shape, which are more discriminate than the symmetrical square shape adopted by conventional markers, are used to detect proposed markers from the camera images effectively. The marker is split into four separate parts in order to improve the robustness to occlusion and curvature to some extent. The registration process can be successfully completed as long as three parts are detected (up to about 80% of the area could be occluded). Moreover, when we attach the marker on nonplanar surfaces, the curvature status of the marker can be roughly analyzed with every part’s normal direction, which can be obtained since their six corners have been explicitly determined in the previous detection process. And based on the marker design, new detection and recognition algorithms are proposed and detailed. The experimental results show that the marker and the algorithms are effective.

© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Pengfei Han and Gang Zhao
"L-split marker for augmented reality in aircraft assembly", Opt. Eng. 55(4), 043110 (Apr 29, 2016). ; http://dx.doi.org/10.1117/1.OE.55.4.043110


Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement


 

  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.