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- W2385919928 abstract "The pose measurement of cannon barrel(vertical angle and azimuth angle) is difficult but important in the precision analysis of SPAAG fire control system.To solve this problem,this paper presents a contactless measuring method based on computer vision.Before measurement,a checked planar faceplate is fixed on the cannon barrel as a marker.Firstly,the coordinates of X corner points are got using Harris cornerd detection algorithm to calibrate the camera,and the camera′s intrinsic parameters are obtained based on extended Kalman filter.Secondly,the corner points are extracted from the image of test position,and then the extrinsic parameter matrix of the corresponding position is calculatted combining with the least square algorithm.Finally,according to the motion model of cannon barrel and its position relative to the marker,the constraint equations between extrinsic parameter and vertical angle and azimuth angle are derived,and then the two angles are figured out.Experiments validate this method,and the results indicate that the measuring precision of this method is less than 0.1°." @default.
- W2385919928 created "2016-06-24" @default.
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- W2385919928 date "2012-01-01" @default.
- W2385919928 modified "2023-09-24" @default.
- W2385919928 title "Vision measurement for the pose of cannon barrel" @default.
- W2385919928 hasPublicationYear "2012" @default.
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