期刊文献+

一种欠约束草图求解方法的研究 被引量:2

A New Method for the Solution of Under Constraint Graph in Sketch Drawing
下载PDF
导出
摘要 基于约束的参数化描述及求解是计算机辅助设计研究的一个热点 ,欠约束图的求解是参数化设计的基本问题 ,为了提高欠约束草图求解的参数化设计效率 ,提出了一种基于隐式约束优先级的欠约束草图求解方法 ,并首先给出了欠约束图求解的一般方法以及欠约束图的基本特征 ,提出了利用隐式约束去匹配缺少的显式约束 ;然后将隐式约束按照一定的规则分成不同的优先级 ,再利用优先级高的隐式约束去匹配变动约束图中的欠约束 ,直到完成约束图的有向化 ;最后 ,探讨了无尺寸约束图有向化过程中的基本特点 ,并给出了无尺寸约束图的求解算法和应用实例。实例应用结果表明 。 Constraint-based parametric description and inferring is one of the host spot in the research of computer-aided design, the solution to under constraint graph is a basic question in parametric design, this paper presents a series of solving methods for sketch drawing based on the priority of under constraint. This article gives general methods for under constraint graph and its basic features firstly, a new method for the solution to under constraint graph in sketch drawing is put forward, in which required apparent constraints are replaced by concealed constraints. The directed process of constraint graph is completed by picking concealed constraints of adjacent entities in sketch of few or no dimensions. In this paper, the priority of concealed constraint is given by the different constraint types and constructing orders, and some more priority concealed constraints are forced into obvious ones by the need number of constraint for every node in constraint solution process.
出处 《中国图象图形学报(A辑)》 CSCD 北大核心 2004年第7期878-885,共8页 Journal of Image and Graphics
基金 安徽省自然科学基金项目 (0 10 42 2 0 9) 合肥工业大学博士专项基金项目 (0 3 5 0 17)
关键词 参数化设计 欠约束 约束图 有向约束图 约束传播 parametric design, under constraint, constraint graph, directed constraint graph
  • 相关文献

参考文献6

二级参考文献21

共引文献70

同被引文献49

  • 1朱建新,周济.工程图信息系统──EDIS[J].高技术通讯,1994,4(10):17-19. 被引量:2
  • 2方卫宁,梁锡昌.机械图纸的自动处理与识别[J].机械工程学报,1995,31(1):8-14. 被引量:3
  • 3胡友兰,黄树槐,常明.机械工程图自动输入与计算机理解技术[J].小型微型计算机系统,1996,17(12):38-42. 被引量:5
  • 4Ramel J Y,Vincent N,Emptoz H.A structural representation for Understanding line drawing images[J].International Journal On Document Analysis and Recognition, 2000,3 (2) : 58-66.
  • 5Rashid Jalal Qureshi,Jean_Yves Ramel,Hubert Cardot.Graph based shapes representation and recognition[C]//LNCS4538:GbRPR2007, 2007:49-60.
  • 6Song Ji-qiang,Su Feng,Li Heng,et al.Raster to vector Conversion of construction engineering drawings[J].Automationin Construction, 2002,11 : 597-805.
  • 7Elliman D.TIF2VEC,an algorithm for arc segmentation in engineering drawings[C]//Lecture Notes in Computer Seience:Post-Proc of GREC2001,2002,2390: 350-358.
  • 8Dori D,Liu W.Sparse pixel vectorization:An algorithm and its performance evaluation[J].IEEE Trans Pattern Analysis and Machine Intelligence, 1999,21 (3) : 202-215.
  • 9Liu Wen-yin.The third report of the arc segmentation contest[C]// LNCS 3926 : GREC2005,2006: 358-361.
  • 10Prabhu B S,Pande S S. Intelligent interpretation of CADD drawings [J]. Computers & Graphics, 1999,23 ( 1 ) : 25--44.

引证文献2

二级引证文献10

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部