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Indexed by:Journal Papers

Date of Publication:2015-08-01

Journal:CHINESE JOURNAL OF AERONAUTICS

Included Journals:SCIE、EI、ISTIC、CSCD

Volume:28

Issue:4

Page Number:1121-1130

ISSN No.:1000-9361

Key Words:High-speed motion; Machine vision; Pose measurement; Structured light; Wind tunnel

Abstract:The measurement of position and attitude parameters for the isolated target from a highspeed aircraft is a great challenge in the field of wind tunnel simulation technology. In this paper, firstly, an image acquisition method for small high-speed targets with multi-dimensional movement in wind tunnel environment is proposed based on laser-aided vision technology. Combining with the trajectory simulation of the isolated model, the reasonably distributed laser stripes and self-luminous markers are utilized to capture clear images of the object. Then, after image processing, feature extraction, stereo correspondence and reconstruction, three-dimensional information of laser stripes and self-luminous markers are calculated. Besides, a pose solution method based on projected laser stripes and self-luminous markers is proposed. Finally, simulation experiments on measuring the position and attitude of high-speed rolling targets are conducted, as well as accuracy verification experiments. Experimental results indicate that the proposed method is feasible and efficient for measuring the pose parameters of rolling targets in wind tunnels. (C) 2015 The Authors.