| The architectural drawing automatic analysis and understanding of the computer, after almost three decades'research, mainly concentrated on the blueprint recognition and computer-aid project amounts calculation, it has achieved some results and obtained the widespread application; however, it is far away from our goals that the information is obtained and the engineering quantity is worked out automatically. The key problem is that present architectural drawing to identify, information to obtain and computer-aided architecture design(CAAD) are not well emerged and integrated. On the basis of the analysis of research situation, this paper, according to present problems, puts forward a new method. The research will have important theory value in architectural drawing automatic analysis and understanding of the computer. It, at the same time, will promote the innovation and development of the entire project cost management, and thus enhance the application of computer in the construction industry and accelerate the process of construction industry information.In chapter one, the present research situation is introduced; the existing problems are analyzed, research thought, implementation plan and work content of this article are also illustrated.In chapter two, the relative knowledge of the architectural drawing and the concept of semantic are briefly introduced. Then, the composition of architectural drawing of domain is given. Based on this, the semantic of architectural drawing is analyzed, which mainly includes the level semantic analysis, the size restraint semantic analysis and the projection relations semantic analysis. Finally, the key problems that the architectural drawing automatic analysis and understanding of the compute have to deal with are given.In chapter three, it mainly concentrates on analyzing the DXF document's structure, which embraces analysis of DXF document data information contained in each stage, classification of the data information by pixel feature, as well as the attribute and method of classes. And then the class diagram is given. Based on that, the data structure and algorithms are designed.In chapter four, the relative theories of knowledge base is introduced. Then, this paper analyses the characteristics of the various functional, extracts knowledge and gives the formalized expression of domain knowledge. Finally, the identification rules are described by natural language and formal language.In chapter five, this paper introduces the conception of integration and the general process for construction budget estimate and the integration system designing. Then, it talks about the new method for project management that is contained in the integration system. Finally, it analyses attribute of the steel semantic and extract, use automaton theory and fuzzy logic knowledge to identify and statistic steel, as well as gives the main algorithm.Finally, this paper summarizes the work of research, proposes my understanding and the view to future research. |
