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针对三维激光扫描技术在古文物本体图制作中的问题,根据点云数据进行本体图的基本思想,提出了一种新的基于三维模型的古文物本体图制作方法。采用均匀分布原则对三维模型与点云数据进行特征信息提取,较好地保留了特征信息;并利用仿射变换将栅格影像分别与基于点云数据与三维模型的特征矢量进行匹配,制作古文物本体图。分析对比数据表明,基于点云的方法匹配精度较基于三维模型的方法稍高,但两者精度均能达到cm级。基于三维模型的本体图制作方法操作直观且制作过程中的误差传递较前者小,是一种在快速的前提下仍能较好保持精度的古文物本体图制作方法,拓展并丰富了有关古文物本体图测绘技术的应用。
Aiming at the problem of 3D laser scanning in the production of ancient artifacts, a new method for making artifacts of ancient artifacts based on 3D model is proposed based on the basic idea of ontology in point cloud data. The uniform distribution principle is used to extract the feature information from the 3D model and point cloud data, and the feature information is well retained. Affine transformation is used to match the raster image with the feature vector based on point cloud data and 3D model, Relics ontology map. Analysis of comparative data shows that the method based on point cloud matching accuracy is slightly higher than the method based on three-dimensional model, but the accuracy of both can reach cm level. Based on the three-dimensional model of the ontology map production method intuitive operation and the production process of error transmission less than the former, is a fast under the premise can still maintain the accuracy of ancient artifacts ontology map production methods to expand and enrich the ancient artifacts Application of Ontology Mapping Technology.