城市三维虚拟现实数据采集前沿技术

Advanced Technique of 3D City Virtual Reality Data Acquisition

虚拟现实是人类探索自然过程中创造形成的一种用于认识自然、模拟自然,进而更好地适应和利用自然的科学方法和技术。空间数据采集技术是城市三维虚拟技术中关键的技术。基于三维点云提取的三维激光扫描技术有地基、空基、车载、星载等广泛的数据采集平台;基于图像形式提取的数据采集技术除了广泛的数据采集平台,还有多形式多光谱的摄影测量与遥感数据采集技术体系;基于地下空间信息的提取主要通过建设涉及方案与地球物理勘探方法结合普通测量实现数据采集并建模。

Virtual reality is a creation of human exploration, which is used to know the principle of the nature, analogue the rule of nature, thus better adapt to and take advantage of natural science methods and techniques. The technology of spatial data acquisition is the key to the technology of 3D city virtual. 3D laser scanning technology based on extraction of 3D point cloud has the data-gathering platform of groundwork, space-based, vehicle-mounted, space-borne widely. In addition to the data-gathering platform widely, the data collection technique based on the extraction of image forms also has photogrammetry with polymorphous type, multi-spectrum and tech-system of data collection based on remote sensing. By development of involving in program and combination of physical geography prospect technology and general measurement, the extraction of information based on the underground space achieves data collection and modeling.