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The potential for using 3D visualization for data exploration, error correction and analysis of LiDAR point clouds

Instead of viewing Light Detection and Ranging (LiDAR) data via a standard two-dimensional screen, we developed prototype software that displays point cloud data, collected terrestrially and aerially from a rural setting, and allows data exploration in an immersive three-dimensional (3D) virtual reality (VR) environment. A head-mounted display (HMD) is used for stereoscopic viewing and a joystick for user navigation. Seventeen remote-sensing specialists took part in interactive trials and they expressed their opinion on the benefits and shortcomings of the prototype for a variety of potential processing activities, which we present in this article. The virtual environment was thought to be ideal for carrying out 3D geometric analysis and good for scrutinizing data errors. Participants felt that the usefulness of data integration depends on user needs and suggested that the interpolation of the cloud would assist interpretation for non-experts.