| Bearing is very important and widely used in rotating parts in machinery industry. It request large-quantity production and high precision. Mostly manufacturing enterprise's technique of shafts'measurement is still stay at manually testing lever and traditional test methods have the defects like large blunder, inefficiency and low productivity. Based on analyzing the development and tendency of cone roller bearing at home and abroad,the systems of roller bearing diameter test and algorithm are studied ,which is following the design principle-convenience, good practicability, high reliability low cost.On the base of actual application requirement in the field of machine vision, this thesis is focused on the research of an algorithm for Circular Parts Subpixel Size Base on Multiscale Space. The master thesis will include the following main contents:1,Measurement technology application status ,basic composition and structure , work principles, features and practical application of CCD are studied.2,The basic theory of optical transfer function to guide optics system design. Choose the line CCD,background light and image gabber card3,CCD Subdivision Technology and its application research in High-precision field. Differences of CCD Subdivision algorithm theory are compared.4,To realize the pixel compensation with software design, which can resolve the illumination asymmetry, and eliminate the influence of optical imaging lens.5,Study on the Image Edge Extracting Algorithm:An algorithm for Subpixel Size Base on Multiscale Space... |
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