Research On Interactive Extraction Technique Of Solid Parameters In Three Drawings

3D reconstruction is one of the most difficult problems in CAD. And it is an important means of three-dimensional modeling. Fast and efficient extraction of information in Three-view drawings to generate intuitive three-dimensional entity can help people modify physical model in time and shorten production cycle during the production process.Based on DXF reading software which is written by predecessors in our lab, this article has made improvements as follow:1. Proposed A method for extracting the parameters of solid,and designed the man-machine interactive interface.Using man-machine interactive interface, complete the extraction of the information of the various views.2. Proposed a voxel feature recognition algorithm for handling the information extracted from the views.Using view matching method,established the graphics knowledge library.3. Using the knowledge and reasoning rules of graphics knowledge library, the recognition of the shape of the body is realized, and the extraction of the geometric parameters is accomplished by means of coordinate transformation.Facilitated the subsequent Boolean operations between the basic bodies.In order to verify the new 3D reconstruction method proposed in this article,we developed a 3D reconstruction software system based on VC++ and Open GL and completed the 3D reconstruction of the simple entity. The feasibility of the method is demonstrated by this system.