Digital ortho-images — a powerful tool for the extraction of spatial- and geo-information
Digital ortho-images — a powerful tool for the extraction of spatial- and geo-information
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DOI：
10.1016/0924-2716(95)00014-3
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发表时间：
1996-04
影响因子：
12.7
通讯作者：
E. Baltsavias
中科院分区：
文献类型：
--
作者：
E. Baltsavias
与模拟图像相比，数字正射影图像提供了巨大的优势，特别是在灵活性、衍生产品的生产和与其他数据集的结合方面。今天，由于开发了更强大的计算机和足够的资源，更容易获取输入数据，数字数据的产生增加，许多商业正射影图像生产系统的发展以及新的应用领域，特别是与地理信息系统和数字制图有关，数字正射影图像的生产已经变得更加普遍。在回顾了过去的发展和现状之后，本文重点讨论了正射影像的不同扩展。这些扩展允许基于正校正立体对、立体对、单标绘和图像分析技术提取空间信息。重点是利用正校正立体对提取三维信息。本文还概述了正射影像在GIS中的实际应用。目前，数字正射影主要用于可视化或作为背景。然而，正射影像提供了许多在很大程度上尚未开发的可能性，特别是在数据库的更新和生成以及自动绘图方面。论文最后概述了未来的研究和发展趋势。
Digital ortho-images provide great advantages in comparison to their analogue counterparts, especially with respect to flexibility, production of derived products and combination with other data sets. Today, production of digital ortho-images has become more commonplace due to the development of more powerful computers with sufficient resources, easier acquisition of input data, increased generation of digital data, development of many commercial ortho-image production systems, and new application areas, particularly in connection to GIS and digital mapping. After a review of past developments and the current status, the paper focuses on different extensions of ortho-images. These extensions permit the extraction of spatial information based on orthorectified stereo pairs, stereomates, monoplotting, and image analysis techniques. Emphasis is placed on the extraction of 3D information using orthorectified stereo pairs. An overview of practical usages of ortho-images in a GIS is also presented. Currently, digital ortho-images are primarily used either for visualization or as a backdrop. However, ortho-images offer many, to a large extent unexploited, possibilities, especially for the update and generation of databases, and automated mapping. The paper concludes with an outline of future trends in research and development.