Research on the Size Measurement of Shaft Parts Based on Image Processing
non-contact measurement of shaft component realizes dynamic measuring,which bases on image measurement technology.After the image of shaft is obtained,Sobel operator is used for preliminary locating to image edge,on basis of this,discrete points of image edge are fitted by least square method for achieving edge subpixel location.By precision analysis,size solution method is acquired when the error is minimum;After calibration coefficient k is gained,the part size is correctly calculated.By experiment,it shows that measurement precision is improved effectively and measurement error is less than ±20μin when resolution of CCD camera is 1392×1040 and its pixel size is 4.65μm.
Shaft component Non-contact measurement Sobel operator Least square fit Calibration coefficient
Xiao-yan Shang Ji-an Wu Xing Wang Liu Nan
School of Optoelectronics Engineering,Xian Technological University,Xian,China Xian Institute of Applied Optics,Xian,China Chongqing College of Electronic Engineering,Chongqing,China
国际会议
太原
英文
602-606
2012-01-13（万方平台首次上网日期，不代表论文的发表时间）