三维GIS支持下的实景融合系统设计与实现

Design and implementation of real scene fusion system based on 3D GIS

视频监控在安防领域的应用日益广泛,但传统的分镜头监控模式具有画面相互孤立、缺乏关联性的应用局限。针对这一问题本文分析了实时监控视频在三维场景中融合展示的难点问题,设计了基于三维GIS的实景融合系统。系统通过视觉特征匹配计算视频投射视角,针对球机设备研究了虚实场景视频联动投射的方法,并通过服务化配置的方式进行数据的加载。试验结果表明该系统在实景融合展示上效果优异,一定程度上提升了多路实时视频集成在三维场景中的展示性能,可以广泛应用于强视频、强GIS业务的公安和智慧城市领域。

With the widespread application of video surveillance in the field of security,the traditional sub-lens surveillance mode has the limitations of isolated images and lack of correlation.This paper analyzes the difficulties of the fusion display of real-time surveillance video in 3D scenes,and designs a 3D GIS-based the real scene fusion system.The system calculates the projection angle of the video projection by matching the visual characteristics,and studies the method of video linkage projection of the virtual and real scenes for the dome equipment,and loads the data through the service configuration.Experimental results show that the system has excellent effect of real-world fusion display,and to some extent improves the display performance of multi-channel real-time video integration in threedimensional scenes,and can be widely used in public security and smart city areas with strong video and strong GIS services.