摘要
提出基于基元关系和基元的三维形体合成技术,即形体合成与基元及基元间的四种关系直接相联系,通过基元关系这一高层语义指导合成过程。提出基元关系转换和基元形状位置调整技术,将相切关系转化为扫描和相接关系,将曲面立体截切关系转化为相交关系,为获得正确的重建结果,对相接、相交和截切关系进行形位调整。最后通过多层次集成形成一体化形体合成技术。一体化形体合成技术可以处理平面立体、曲面立体的各种组合情况,有效地扩大了三维重建的形体覆盖域。
The paper presents 3D solid synthesis technologies based on primitives and their relationships to direct the synthesis process. The paper also presents the technologies of primitive relationship conversion and primitive shape-location adjustment to translate tangent relationship into scan and connected relations, to translate surface solid interceptive relationship into intersected relationship, and to adjust the shapes and locations for obtaining correct reconstruction results. The integrated synthesis technology is formed by multi-level integration. Various kinds of solids with planed or curved surface can be dealt with by using this technology and the shape coverage can be effectively expanded.
出处
《工程图学学报》
CSCD
北大核心
2007年第1期48-54,共7页
Journal of Engineering Graphics
基金
国家自然科学基金资助项目(60473129)
教育部博士学科点专项科研基金资助项目(20020335093)
关键词
计算机应用
三维重建
基元关系
关系转换
形位调整
computer application
3D reconstruction
primitive relationship
relationship conversion
shape-location adjustment
