Development of 3D Spatial Information Visualization Techniques Using Unity 3D

摘要

With the growing number of people of late engaging in water-friendly activities using river spaces, the social demand for river information is surging. In addition, with the advancement of information and communication technology (ICT) development, the demand for three-dimensional (3D) spatial information identical with the real world is increasing, leading to the diversification of 3D high-precision spatial-information-based studies. To construct 3D spatial information, large-volume high-resolution satellite images and digital elevation modeling (DEM) should be used, thus creating data processing and visualization delay problems. As such, this study selected the Unity 3D engine after comparing and analyzing the engines suitable for 3D spatial information construction, and attempted to address the data service speed problem in constructing 3D spatial information using the Unity 3D engine. For the generated mesh in high-capacity DEM. the processing speed was increased by increasing/decreasing the number of mesh polygons according to the resolution through the application of the object creation variable algorithm according to the camera position. High-resolution satellite images were divided into segmented images using the division technique, and were mapped. As a result, when operating the system initially, the user standby time was improved by 80% compared to the existing time. When constructing 3D spatial information based on large-volume high-precision river space in the future, the Unity 3D engine is expected to be effectively utilized in resolving the data processing and system speed problems.