We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Real-Time Docking Ring Detection Based on the Geometrical Shape for an On-Orbit Spacecraft.
- Authors
Zhang, Limin; Pan, Wang; Ma, Xianghua
- Abstract
Docking ring is a circular hatch of spacecraft that allows servicing spacecraft to dock in various space missions. The detection of the ring is greatly beneficial to automatic capture, rendezvous and docking. Based on its geometrical shape, we propose a real-time docking ring detection method for on-orbit spacecraft. Firstly, we extract arcs from the edge mask and classify them into four classes according to edge direction and convexity. By developing the arc selection strategy, we select a combination of arcs possibly belonging to the same ellipse, and then estimate its parameters via the least squares fitting technique. Candidate ellipses are validated according to the fitness of the estimation with the actual edge pixels. The experiments show that our method is superior to the state-of-the-art methods, and can be used in real time application. The method can also be extended to other applications.
- Subjects
SPACE vehicles; LEAST squares; GEOMETRIC shapes; ELLIPSES (Geometry); SPACE vehicle docking
- Publication
Sensors (14248220), 2019, Vol 19, Issue 23, p5243
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s19235243