笔式草图的增量识别

巩应奎; 范玉青; 吴志方

笔式草图的增量识别

1.
北京航空航天大学机械工程及自动化学院, 北京 100083
2. 国家起重运输机械质量监督检验中心,北京 100007

基金项目: 国家863高技术研究发展计划资助项目(2003AA411330);国家973重点基础研究基金资助项目(2002CB312103)

详细信息

作者简介:
巩应奎(1974-),男,山西平遥人,博士生, ykgong@163.com.

中图分类号: TP 391.9
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- 文章访问数: 3258
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- 被引次数: 0
出版历程
- 收稿日期: 2005-05-27
- 网络出版日期: 2006-05-31

Incremental recognition method for pen-based sketch

1.
School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
2. Quality Inspection Center of Beijing Materials Handling Research Institute, Beijing 100007, China

摘要

摘要: 针对笔式三维建模技术中手势交互的特点,提出了一种二维草图的增量识别方法:从原始笔划的在线识别与线元转换,到约束关系的自动捕捉与施加,到二维组合图元的识别与规整,到特征手势的识别,到最后的三维特征建模.整个识别过程依据了三维特征建模思想和基于上下文感知的智能推理技术,通过分层识别的方法从紊乱、非精确的二维草图中有效提取三维建模的特征信息,有效降低了草图识别过程的复杂度和积累误差.将特征手势遵循隐式映射机制映射到三维空间后,实时完成三维建模,实现了二维手绘草图与三维精确建模的有效集成.该方法已经在自主开发的原型系统PenSketch3D中得以验证,并取得良好效果.
- 笔式用户界面 /
- 手势交互 /
- 草图识别 /
- 特征手势建模 /
- 人机交互
Abstract: A method of two-dimensional sketch recognition based on incremental mode was proposed according to the characteristics of gesture interaction inpen-based three-dimensional modeling technology. The sketch recognition includes: on-line stroke recognition and conversion, automatic constraint catching and appending, two-dimensional combined entity recognition and rectification, feature gesture recognition and three-dimensional feature modeling. Three-dimensional feature modeling thinking and intelligent reasoning technology based on context-aware were used to the recognition. Feature information for three-dimensional modeling was distilled step-by-step from disorganized and inaccurate two-dimensional sketch. The complexity and accumulative uncertainty are reduced effectively by the method. Feature gesture was mapped into three-dimensional space according to implicit mapping mechanism to finish three-dimensional modeling in real time. Asa result, two-dimensional freehand sketch and three-dimensional accurate modeling are integrated effectively. It has been validated in a prototype system, PenSketch3D, with promising effect.
- pen-based user interfaces /
- gesture interaction /
- sketch recognition /
- feature gesture modeling /
- human computer interaction

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参考文献(1)

[1] 栗阳,关志伟,戴国忠.笔式用户界面开发工具研究[J].软件学报,2003,14(3):392-400 Li Yang, Guan Zhiwei, Dai Guozhong. Research on development tools for pen-based user interfaces[J]. Journal of Software, 2003, 14(3):392-400 (in Chinese) [2] 宋保华,叶军,于明玖,等.笔输入草图的分层识别[J].计算机辅助设计与图形学学报,2004,16(6):753-758 Song Baohua, Ye Jun, Yu Mingjiu, et al. Three-tiered recognition method of pen-based sketch[J]. Journal of Computer-Aided Design & Computer Graphics,2004,16(6):753-758(in Chinese) [3] Qin S F, Wright D K, Jordanov I N. From on-line sketching to 2D and 3D geometry:a system based on fuzzy knowledge[J]. Computer-Aided Design, 2000, 32(14):851-866 [4] Qin S F, Harrison R, West A A, et al. A framework of web-based conceptual design[J]. Computers in Industry, 2003, 50(2):153-164 [5] 胡华强,彭维,刘玮,等.基于手绘草图的三维CAD系统[J].计算机工程与应用,2004,40(18):116-119 Hu Huaqiang, Peng Wei, Liu Yiwei, et al. Freehand sketch-based three-dimensional CAD system[J]. Computer Engineering and Applications,2004, 40(18):116-119(in Chinese) [6] 任向实,关志伟,张高,等.基于笔的人机界面和人机交互发展方向[J].计算机科学,2001,28(4):82-86 Ren Xiangshi, Guan Zhiwei, Zhang Gao, et al. Pen-based interaction and directions of human-computer interaction[J]. Computer Science, 2001, 28(4):82-86(in Chinese)

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