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《Ordnace Industry Automation》 2002-06
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A Measurement Method of Gun Barrel Axes Straightness Based on Image Processing

JI Li-jiang, LIAO Jun-bi, SHI Wei (Dept. of Measure and Control Engineering, Sichuan University, Chengdu 610065, China)  
Based on analyzing the status quo of straightness measure in/out of home and comparing the advantage/disadvantage of laser collimating method, roundness method and lever method in straightness measure, a laser reflecting method for measuring straightness of gun barrel axes based on image processing was put forward. In this method, the laser beams laser bean, and then, shoots to the spectroscope after collimated, then shoots to measure element after being partly reflected. The measure element moves in the gun barrel and apperceives the change of the actual axes position. The laser reflected beam permeates the spectroscope and gets to the optical target, the image of the information measured of the optical target is shoot by CCD camera. After image processing and data processing, the center of the laser beam in the image of the measured section was got, and then the axes straightness error was calculated out with angle-accumulate formula. As also, the steps of realizing software are presented under Win98 and VC++6.0 environment. Results of experiments show that this method has many virtues such as higher delicacy, higher measuring speed, lower request to the dimension of the measured object and being fit for using in plant.
【CateGory Index】: TJ305
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