The Scanning,Discerning And Vectorization Of Engineering Drawing

With the development of the technology of the computer and modern manufacturing technology, the study of scanning , discerning and vectorization of engineering drawing is becoming one kind of realistic, demand more and more. It has very high using value and economic benefits to the obtaining of manufacturing system information and the picture shelf management of the enterprise.Required by the realities, backing on processing of engineering drawing and using the technology of OOP, this dissertation analyzes and explains the main processes of scanning, discerning and vectoring of engineering drawing including image foregoing processing, the tracking of vectoring , image discerning , following processing and the transforming of image form. The first, presentating several arithmetic and realizing of image forgoing processing, especially analyzes and explains the arithmetic of image thinning processing. The second, analyzing the arithmetic of the tracking of vectoring on the base of thinning processing. The third, analyzing the characteristics of the code of Freeman and using it to track the vector. The fourth, on the base of utilizing the procedure to classify the figure on the whole, this subject uses the least square method of curve matching to discern circle and straight line from the collecting of broken line and explains the algorithms. It is just a study tentatively. The fifth, giving several methods of following processing. The sixth, making the image transform to the form of AutoCAD and can be edited and modified in the condition of AutoCAD.The research of scanning, discerning and vectorization of engineering drawing has been carried out for quite a long-time, but it has not reached the degree of intelligence and understand. The subject has just carried on the simple try in this respect, too. There are a lot of questions.