Part Contour Size Non-contact Measurement Technology Research

In this paper,designing and building a platform for non-contact measurement.The part contour size measurement principle and method study,The resulting data error analysis.In manufacturing is usually to check whether the size of the product within the allowable range,and whether the product has the correct shape or position.These tests were mainly related to the geometrical characteristics of the product detected two or three dimensional,e.g.,geometry,surface shape,location and other characteristics.In the case of non-contact measuring instrument does not feel the elements in contact with the surface of the object,you can get a variety of appearance of the object or the intrinsic characteristics of the data.In this paper,digital image processing technology.The measurement method is optical measurement technology and computer image processing organic combination with the imaging system to be measured object image pickup,and then by computer image processing and analysis,identification,and ultimately get the test data.In this paper,the entire non-contact measuring platform of two parts,hardware system,including hardware and software systems mainly for parts for image acquisition,Software systems in high-level languages(C ++)as tools for image cropping,binarization,filtering,thinning of image preprocessing,And the measurement data obtained by the relevant fitting operation and error processing.After careful analysis and theoretical studies,the present scheme of the collected data can be part contour size more accurate measurement and display,and measurement error analysis.