Application And Research Of Image Processing In The Measure System

The application of digital image processing in the field of precise measurement generates a new kind of measurement technology—image measurement technology. The principle of image measurement technology is detecting the edge of the object using digital image processing technology, and obtain its geometric parameters. Recently the technology of digital image measurement has been a new focus point of research in measurement field. It is an integration system which consist of optics, mechanics and electronics technology. It concerned mechanics, optics, electronics, computer vision, image processing technique and software engineering etc. Used widely in the dimensional measurement of geometrical quantity, delicate complexity parts measurement and the remote-sensing measurement of avigation. With the development of computer technology and image sensor, image measurement technology have advantages of high sensitivity, high resolving power, high velocity, non-contactness and low cost compared with other measurement instruments of the same grade of accuracy.The digital image measurement means that the images are taken as the carrier of information. Based on the theory of vision, making use of the technique of digital image processing to research images of objects, it obtain quantificational measurement of object. The work is focused on the algorithm, less dependent of external devices and have higher precise.At first, this thesis introduces the basic principle of image processing, at the same time, given methods of image processing in the system of geometrical parameter measurement. According to the process image processing, it introduce pre-treatment, image segmentation method, image tracking, mathematical morphology. Image matching is the kernel technology in industrial inspection, so fast algorithm of image matching in industrial inspection is mainly discussed here, this thesis puts emphasis on fast algorithm of Point-Pattern Matching. At last, this thesis put up the experiment result' error analysis about the geometrical parameter...