计量学报2009，Vol.30Issue(z1)：72-75,4.DOI:10.3969/j.issn.1000-1158.2009.z1.018
王冠虫化石三维数字建模与几何形态测量
3D Digital Modeling of Coronocephalus Fossil and Measurement of Geometric Morphometric
摘要
Abstract
A structured-light scanning method for the precise geometry measurement of the coronocephalus fossil is described. The three-dimensional digital model of the fossil is made from the cloudy data through the scanning, data collecting, aligning, merging, and editting. The digital model can be used for geometry measurement of the coronocephalus fossil. The least-square method is used to fit two related lines near the landmark. The landmark is the point of intersection of this two fitting lines, which is unique and accurate. Many geometric parameters of the fossil, such as the distances between all pairs of landmarks, angles between axial furrows and pleural furrows, all side lengths and angles of the triangular pygidium, can be measured fast and accurately from the digital model. The fossil is also measured accurately by universal tool microscope, which is a measuring standard with higher accuracy to validate the proposed method. The experiment shows that the measuring errors of the distances and angles are less than 0. 1 mm and 1' respectively.关键词
计量学/古生物/三叶虫化石/生物进化学/几何形态测量/数字建模Key words
Metrology/Paleontology/Trilobita fossil/Biological evolution/Geometric morphometrics/Digital modeling分类
通用工业技术引用本文复制引用
何莉,欧阳健飞,秦鹏..王冠虫化石三维数字建模与几何形态测量[J].计量学报,2009,30(z1):72-75,4.基金项目
精密测试技术及仪器国家重点实验事自主探索课题基会(PILT0906) （PILT0906）
