贴近摄影测量在塑石造景表面积测量中的应用

Application of Close-InPhotogrammetry in Surface Area Measurement of Plastic Stone Landscaping

实际绿化工程竣工验收时,常常涉及一些不规则表面的面积计算,传统测量方式难以实现。基于某绿化工程竣工验收中的塑石造景,采用倾斜摄影测量加多层贴近摄影技术进行三维精细建模,再将其模型成果导入Geomagic Studio软件中进行模型编辑和边界编辑等处理,最终根据编辑后模型计算其表面积。为验证计算精度,随机抽取部分区域采用点云逆向建模与上述计算面积比对,差值较小,满足竣工验收的精度要求,为日后针对复杂造型的表面积工程验收提供了一种低投入、高收益、高效率的途径。

The completion and acceptance of actual greening projectoften involve the measurement of some irregular surfaces,which is hard to be calculatedthrough traditional methods.Based on the plastic stone landscaping completed in a greening project,we adopt the oblique photogrammetry and multi-layer close-in technology to create the 3D fine modeling,which is then imported into Geomagic Studio for modeling edition and boundary edition so as to calculate the surface area according to the edited model.In order to verify the calculation accuracy,some areas are randomly selected based on thePoint Cloud Reverse Modeling and compared to theaforesaid area to be calculated.The difference is small and the accuracy can meet the requirement of the project completion and acceptance.This method provides an efficiency approach with low investment and highyield for the project acceptance with complicated surface in the future.