融合意图捕捉的笔式草绘特征建模  

Sketching Feature-Based Modeling by Capturing Design Intention

作　　者：何利力[1] 方贵盛[1] 孔繁胜[1] 

机构地区：[1]浙江大学计算机科学与技术学院,杭州310027

出　　处：《计算机辅助设计与图形学学报》2007年第6期730-735,741,共7页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家"九七三"重点基础研究发展规划项目(2002CB312103);浙江省高校青年教师资助计划(200418)

摘　　要：实现了一种基于笔式草绘特征建模方法.该方法模仿传统的纸笔草绘交互设计方式,利用意图捕捉机制揣测用户的设计意图,并采用基于特征的建模方法构造出三维实体概念模型.支持在模型表面上直接草绘截面和轨迹线,并通过特征切削或添加操作构造复杂物体模型;初步实现了基于手势的模型编辑操作.实验结果表明,该方法简单、高效,适合于快速表达不精确的概念模型.A feature-based modeling method by interactively sketching the profile sections and trajectory paths of features is presented. A prototype system, named Sketch3D, provides a calligraphic interface that emulates the traditional sketching behaviors using papers and pencils. Intention capture mechanism is used to conjecture of users＇ design intention, and the feature-based modeling method is applied to construct the 3D solid models. The system supports four functions, which are stroke recognition and beautification, creation of basic features, sketching on 3D models and gesture-based model editing. The strokes can be sketched on the surfaces of the solid models, and the more complicated solid models can be constructed with the addition and deletion of features. Experiments show that the sketching feature-based modeling method is simple and efficient, and is suitable for rapidly expressing imprecise conceptual shapes.

关 键 词：笔式用户界面 草绘设计 特征建模 草图识别与规整 手势 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术]