期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2000
卷号：XXXIII Part B5/1
页码：748-755
出版社：Copernicus Publications
摘要：We present a process that enables mensuration in a 3D-visualization environment using multiple overlapping images. A Virtual Projector with accurate camera information allows imagery to be projected onto terrain and feature surfaces. This method encourages the use of multiple overlapping images in VR. We present results that demonstrate the ability of this process to efficiently produce photospecific VR and accomplish accurate mensuration in a multi-image environment. Current photospecific visualization tools lack native support for precise camera models. The system being developed is called Visualization Environment Supporting Photogrammetry and Exploitation Research (VESPER). The basic elements of photogrammetry are integrated with 3D-visualization technology. These are precise camera calibration, position and orientation, overlapping images, and image to ground transformation. Methods will be presented that enable the understanding of multiple overlapping images. Image to ground transformation is accomplished through careful application of projective textures. The fusion of multiple image sources in an interactive visualization environment demonstrates the benefits of bringing the rigors of photogrammetry to computer graphics. The methods presented show promise in allowing the development of faster tools for model verification, change detection, damage assessment, and photospecific modeling of feature data. The use of virtual projectors can simplify the data preparation process for virtual reality applications while adding greater realism
