基于最小二乘法三维坐标转换的模型变形研究  

Research on Model Deformation Based on Least Squares Method for 3D Coordinate Transformation

作　　者：王硕 刘微微 潘诗辰 WANG Shuo;LIU Weiwei;PAN Shichen(Zhejiang Institute of Surveying and Mapping Science and Technology,Hangzhou 311100,China)

机构地区：[1]浙江省测绘科学技术研究院,浙江杭州311100

出　　处：《测绘与空间地理信息》2024年第2期70-72,共3页Geomatics & Spatial Information Technology

基　　金：浙江省自然资源厅2021年度科技项目(2021-55);浙江省自然资源厅2022年度科技项目(2022-53)资助。

摘　　要：如何在保证三维模型可视化效果的前提下实现三维模型的变形,既满足三维模型脱密精度的要求又能满足三维产品的应用需求,是目前自然资源领域研究的一个热点。针对此问题,本文提出了一种适用于任意场景的三维模型变形方法,在限差给定的条件下,引入最小二乘法进行三维坐标转换,在此基础上在多视影像区域网平差阶段完成坐标转换,从而实现三维模型的无损变形。试验结果表明,本文提出的方法能够有效地避免三维模型坐标转换过程中纹理拉花、结构损失等问题,可以获得良好的变形效果,为当前三维模型的脱密变形提供了一条新的技术路线。How to realize 3D model deformation on the premise of ensuring 3D model visualization effect,it not only meets the require-ment of 3D model decryption precision but also meets the application requirement of 3D products is currently a hot research topic in the field of natural resources.In order to solve this problem,this paper proposes a 3D model deformation method for arbitrary scenes.Un-der the condition of limited difference,the least square method is introduced to carry out 3D coordinate transformation.On this basis,coordinate transformation in block adjustment of multi-view image is completed,so as to realize the non-destructive deformation of the 3D model.The results showed that the method proposed in this paper can effectively avoid texture drawing and structural loss in the process of coordinate transformation of 3D models,so as to obtain good deformation effect and it provides a new technical route for 3D model deformation at present.

关 键 词：三维模型 三维坐标转换 最小二乘法 模型变形 

分 类 号：P237[天文地球—摄影测量与遥感]