面向高功率激光装置精密装校实验室的三维重建技术及应用

3D Reconstructing Technique and Application of High-power Laser Facility's Optics Assembly Building

针对高功率激光装置对成千上万光机组件的精密装校工艺数字化仿真验证的工程需求及精密装校实验室(OAB)的特殊环境,基于多视角序列图像三维重建技术,提出实现OAB三维重建的总体技术.首先结合实验室重建对象的特点,分析了满足于OAB三维重建的多视角序列图像采集、特征提取、特征匹配、自适应均匀点云采样等相关方法;然后以激光跟踪仪为重建对象,详细介绍了三维重建流程;最后依次完成实验室其他特征模型的三维重建,并将提出的OAB三维重建的总体技术应用于整个OAB重建,实现了精密装校环境的三维重建.OAB重建结果表明,该技术可获得较高逼真度的精密装校实验室数字化模型,满足光机精密装校工艺数字化仿真验证的需求.

A technical framework based on multi-view image sequences reconstruction is proposed to realize the3D model reconstruction of the high-power laser facility where thousands of large opto-mechanical units shall be assembled in the optics assembly building(OAB),with stringent specifications both on accuracy and cleanliness.Firstly,fundamental methodologies related to the multi-view image sequence reconstruction,including features recognition,matching and adaptive point-cloud sampling,etc.,are discussed in detail.Secondly,a3D reconstruction procedure based on the meta-data from laser trackers is presented,which is applied to the3D engineering reconstruction of the optics assembly building(OAB).Finally,initial results show a robust performance of the proposed technical framework and pave a promising way for further applications in future.