SBIR Phase I: Slippability Analysis for Scan Registration and Feature Fitting

SBIR 第一阶段：扫描配准和特征拟合的滑动性分析

• 批准号: 0339808
• 负责人: G. Y. Fletcher
• 金额: $ 10万
• 依托单位: RAINDROP GEOMAGIC INC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-01-01 至 2004-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0339808&HistoricalAwards=false
• 关键词: SBIR; Phase; Slippability; Analysis; Scan

This Small Business Innovation Research (SBIR) Phase I Project proposes to investigate the problem of globally aligning multiple point scans of a 3D object. Given the digitized scan data for two partially overlapping surfaces, a numerical measure is described that quantifies the resistance encountered by one sliding over the other (lockability versus slippability). This measure is a heretofore missing piece in the design of successful algorithms for aligning multiple partial scans. It is of fundamental importance in building a prioritized schedule that optimally merges the most lockable scans. It is to be expected that a proper fine-tuning of this numerical method will dramatically improve the speed and accuracy of computed alignments, particularly for mechanical shapes. This yields a classification of the defining surface which enables the detection and fitting of primitive features in CAD models directly from the collected point data since these are generally slippable surface elements such as planes, spheres, cylinders, cones, surfaces of revolution and extrusions.

这个小型企业创新研究（SBIR）第一阶段项目提出了研究全球对齐3D对象的多点扫描的问题。给定两个部分重叠表面的数字化扫描数据，描述了一个数值测量，该数值测量量化了一个滑动到另一个上所遇到的阻力（锁定性与滑动性）。该措施是迄今为止在用于对准多个部分扫描的成功算法的设计中缺失的部分。它对于构建优先级排定的时间表以最佳方式合并最可锁定的扫描至关重要。可以预期的是，这种数值方法的适当微调将显着提高计算对齐的速度和精度，特别是对于机械形状。这产生了定义表面的分类，其使得能够直接从收集的点数据检测和拟合CAD模型中的原始特征，因为这些通常是可滑动的表面元素，例如平面、球体、圆柱体、圆锥体、旋转表面和挤压表面。