龚永坚,宣翠仙,楼建忠,李强.基于数位笔压感的汽车三维手绘系统研究[J].农业机械学报,2015,46(8):314-318,288.
Gong Yongjian,Xuan Cuixian,Lou Jianzhong,Li Qiang.3D Automotive Sketching System Based on Pressure-sensitivity of Digital Pen[J].Transactions of the Chinese Society for Agricultural Machinery,2015,46(8):314-318,288.
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基于数位笔压感的汽车三维手绘系统研究   [下载全文]
3D Automotive Sketching System Based on Pressure-sensitivity of Digital Pen   [Download Pdf][in English]
投稿时间:2015-06-11  
DOI:10.6041/j.issn.1000-1298.2015.08.043
中文关键词:  汽车造型  三维手绘  数位笔  压感  笔触
基金项目:金华市科技计划重点资助项目(2011-1-045)和浙江省公益技术应用研究计划资助项目(2013C31085)
作者单位
龚永坚 金华职业技术学院 
宣翠仙 金华职业技术学院 
楼建忠 金华职业技术学院 
李强 吉林大学 
中文摘要:在分析当前三维手绘系统问题的基础上,通过对数位笔压感信息的分析,提出了一种基于数位笔压力感应的三维手绘曲线生成方法,据此开发了基于数位笔压力感应的汽车三维手绘系统原型,并在汽车三维手绘造型AutoSketch系统中进行了集成应用测试。测试结果表明,所开发的原型系统能够很好地融合到AutoSketch系统中,并且操作命令识别效率高、计算时间短。
Gong Yongjian  Xuan Cuixian  Lou Jianzhong  Li Qiang
Jinhua Polytechnic,Jinhua Polytechnic,Jinhua Polytechnic and Jilin University
Key Words:Automotive styling  3D sketching  Digital pen  Pressure-sensitivity  Stroke
Abstract:As far as current 3D sketching system is concerned, two main problems are obvious. One is few applications on automotive engineering, the other is that pressure-sensitive information is seldom used to create the third direction curve, though both methods of projection and surface intersection are usually used. Based on analysis of current pressure-sensitive technology of digital pen, a system structure of 3D automotive sketching system based on pressure-sensitivity of digital pen was proposed. Then, detailed software surrounding and hardware surrounding on developing the 3D automotive sketching system were proposed. Realization methods of 3D sketching system based on digital pens pressure sensing were important and discussed in detail. There were four steps in the realization methods, which were creating reference plane, extracting pressure-sensitive information, creating and editing 3D curve, creating and editing 3D surface. During creating a 3D curve, the focus was on drawing original curve, dealing with the single stroke and parameterization of stroke, and fitting two curves. Finally, the system was integrated with AutoSketch system and tested, and a prototype for 3D automotive sketching based on pressure-sensitivity of digital pen was completed. The test results showed that the prototype system matched the AutoSketch system well. It was good at high recognition efficiency of operation command and short computation time. However, during the test, it was found that when fitting a single stroke, the beginning and end of the curve could not accurately pass the beginning and end tip of the given data points. The fitting method which is good at clamping might be suggested and adopted.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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