SGER-Wavelet SDF Solid Modeling

SGER-小波SDF实体建模

• 批准号: 0733831
• 负责人: Duane Storti
• 金额: --
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-07-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0733831&HistoricalAwards=false
• 关键词: SGER; Wavelet; SDF; Solid; Modeling

The research objective of this Small Grant for Exploratory Research award is to perform initial, exploratory development of a new formulation of solid modeling to support computer-aided design with parts whose models are obtained via volumetric scanning technology such as computed tomography (CT) or magnetic resonance (MR). Three dimensional scanning technologies have become ubiquitous, but inclusion of scanned objects in the computer-aided design (CAD) process has not become standard practice largely because the surface-based model representations which are used in CAD are totally distinct from the native point data representation of scan data. The research will explore a new modeling formulation consisting of a wavelet-based approximation to the signed distance function values which result from level set segmentation of the scan data. Successful completion of the proposed research will form the basis for design tools that will benefit product design which is based on initially gathered volumetric scan data. Specifically, this new computer-aided design environment will greatly enhance the ability to design, test, and manufacture devices that are custom fit to specific patients or to a specific segment of the population based on scans of anatomy. Potential additional areas of impact include facilitating inspection of as-built part models for quality improvement and application to security systems employing multi-energy scans such as airport baggage screening. The results of this research will also have a significant educational impact through integration of these methods into departmental class offerings in computer-aided engineering and advanced modeling/manufacturing.

该探索性研究奖的研究目标是对实体建模的新配方进行初步的探索性开发，以支持通过计算机断层扫描（CT）或磁共振（MR）等体积扫描技术获得模型的部件的计算机辅助设计。三维扫描技术已经变得无处不在，但将扫描对象纳入计算机辅助设计（CAD）过程中尚未成为标准实践，这主要是因为CAD中使用的基于表面的模型表示完全不同于扫描数据的本地点数据表示。该研究将探索一种新的建模公式，包括一个基于小波的近似的有符号的距离函数值，导致从水平集分割的扫描数据。成功完成拟议的研究将形成设计工具的基础，这将有利于产品设计，这是基于最初收集的体积扫描数据。具体而言，这种新的计算机辅助设计环境将大大提高设计、测试和制造器械的能力，这些器械根据解剖结构扫描定制适合特定患者或特定人群。潜在的其他影响领域包括促进对完工部件模型的检查，以提高质量，并应用于采用多能量扫描的安全系统，如机场行李检查。这项研究的结果也将有一个显着的教育影响，通过这些方法整合到计算机辅助工程和先进的建模/制造部门类产品。