对古生物化石进行数字化建档,为古生物化石的长久保存、研究和复原提供了一个切实可行的办法。阐述了非接触式激光扫描仪的测量原理,并利用其对罗平古生物化石群中分布在120 m2范围内的古生物足迹化石进行了数字化测量,采用大视场WIDE和小视场TELE镜头交替使用的方法获取全场和单一足迹化石三维点云数据,再利用三维数据处理PolyWorks软件将两个镜头的三维数据进行对应的嵌入融合,最终测量结果既能全面记录足迹整体分布,真实反映古生物爬行运动轨迹,又能精细反映足迹局部特征。结果表明提出的对大面积野外待测对象的测量方法,为化石野外测量、三维数字化、数字存储提供了可行方案。

Digitization of fossils provides the long-term preservation, research and recovery of paleontology with a feasible method. This article elaborated the survey principle of non-contact laser scanner, which was used to measure the trace fossils distributed in Luoping Biota within 120 m2. After alternately using the two lens(WIDE for a large field and TELE for a small field) to record 3D cloud data of full field and single footprint, and then embedding and merging these two digitization results of 3D data in PolyWorks. The final measuring results demonstrate the whole distribution of trace fossils in large area, and vividly reveal the crawling trajectories of the ancient animals. The intensively express the local feature of single footprint. The approach, presented in this paper to 3D digitalization for a large area fossil field, provides a feasible solution for in-site measurement and digital storage of ancient fossils.