基于数字孪生的多源数据融合不动产测绘可视化系统

Real estate surveying and mapping visualization system with multi-source data fusion based on digital twin

现有不动产测绘系统的性能和吞吐量无法满足需求,导致数据处理速度慢、用户体验差,为此,本文提出基于数字孪生的多源数据融合不动产测绘可视化系统。收集不动产宗地、权属等基础数据,利用无人机倾斜摄影方式,获得不动产图像数据;使用加权多源数据融合方法,融合不动产宗地、权属等数据,对不动产图像进行像控点测量、空三加密处理;使用数字孪生增强现实(AR)技术生成不动产多视图,在Google Maps中提取不动产经纬度,将其叠加到不动产多视图上,得到不动产测绘结果图像;将不动产多视图与多源数据融合后的不动产基础数据整合关联后,输入到3D max软件内,利用该软件建立不动产测绘可视化模型,通过该模型实现不动产测绘可视化、信息查询与编辑等功能。实验结果表明,该系统不仅可有效呈现不动产测绘可视化结果,而且不动产测绘结果也较为准确,具备较好的应用效果。

The performance and throughput of the existing real estate surveying and mapping system fail to meet the demand,resulting in slow data processing speed and poor user experience.Therefore,a real estate surveying and mapping visualization system with multi-source data fusion based on digital twin was proposed.By collecting the basic data of real estate such as land parcel and ownership,the image data of real estate was obtained by using the oblique photography of unmanned aerial vehicles(UAVs).The weighted multi-source data fusion method was used to fuse the data of real estate such as land parcel and ownership,and the image control point measurement and aerial triangulation encryption were carried out on the real estate image.The digital twin-based augmented reality(AR)technology was used to generate multiple views of real estate,and the longitude and latitude of real estate were extracted from Google Maps and superimposed on the multiple views of real estate,so as to obtain the surveying and mapping results of real estate images.After integrating and associating the basic data of real estate fusing multiple views of real estate and multi-source data,the basic data of real estate was input into the three-dimensional(3D)max software,which was used to establish a visual model of real estate surveying and mapping.Through this model,functions such as visualization of real estate surveying and mapping,as well as information query and editing were realized.The experimental results show that the system can effectively present the visualization results of real estate surveying and mapping,and its real estate surveying and mapping results are more accurate and have a good application effect.