Title :
Visual measurement of micro-target pose in ICF experiment
Author :
Yanan, Zhang ; Xu, Chen ; Wei, Song ; Linyong, Shen
Author_Institution :
Sch. of Mechatronical Eng. & Autom., Shanghai Univ., Shanghai, China
Abstract :
In ICF (Inertia confinement fusion) physical experiments, target-positioning accuracy directly affects the success rate of target hitting. This study uses three CCDs to acquire images of target from different viewing angles then the spatial coordinate values and the rotation matrix of target are calculated by integrating the characteristic values of the three CCDs. To obtain the characteristic values, this paper presents an image processing method of data fusion which combines template matching with ellipse contour fitting technology. Sub-pixel accuracy of location is obtained by adopting bicubic interpolation. Proved by practice test this method has the advantages of high stability, low time consumption and high accuracy over 1 μm.
Keywords :
CCD image sensors; curve fitting; image fusion; image matching; interpolation; matrix algebra; physics computing; plasma diagnostics; plasma inertial confinement; pose estimation; target tracking; CCD; ICF experiment; bicubic interpolation; data fusion; ellipse contour fitting technology; image acquisition; image processing method; inertia confinement fusion physical experiment; location subpixel accuracy; microtarget pose; spatial coordinate value; target hitting; target rotation matrix; target-positioning accuracy; template matching; visual measurement; Accuracy; Charge coupled devices; Fitting; Interpolation; Laser beams; Measurement by laser beam; contour fitting; pose measurement; sub-pixel location; target positioning; template matching;
Conference_Titel :
Computer Science and Automation Engineering (CSAE), 2012 IEEE International Conference on
Conference_Location :
Zhangjiajie
Print_ISBN :
978-1-4673-0088-9
DOI :
10.1109/CSAE.2012.6272558
