Reserch For Recognition Of 2D Drawing Based On Feature And System Integration

In the CAD system and in the CAPP system's integrated process, how to realize in the CAD engineering plat the components processing information without the manual intervention situation the automatic extraction, is in a current CAD/CAPP system integration difficult question.This article according to some enterprise present situation, proposed one kind based on the characteristic two-dimensional engineering drawing automatic recognition method, can withdraw in automatically the engineering drawing the components processing characteristic. In the article first to domestic and foreign about aspects and so on characteristic definition and classification has conducted the deep research, in view of this topic's research aim, has established the processing characteristic prototype, the prototype establishment research area processing characteristic definition and the description. Has established the characteristic abstract level model according to the characteristic different level, according to various levels characteristic establishment recognition algorithm: Regarding the element characteristic's recognition, uses the circulation traversal procedure to withdraw each kind of element characteristic from the (.dwg) data file the information; First establishes the recognition model regarding the processing characteristic, according to the production pattern system's theory method establishment based on the rule trick recognition method, through the model processing characteristic's recognition, has expounded the recognition principle and the method.Finally, according to trick recognition's method, has produced XXX components engineering drawing recognition system, can realizes the automatic information extraction to the chart processing characteristic and the processing parameter.Based on rule processing characteristic's automatic diagnosis algorithm's realization, enhanced CAD to provide the infed information to the CAPP system the automaticity, reduced the manual participation, was advantageous in realizes high-level semantics information transmission between system's.