文章基本信息

标题：Oia and Building: Two Programs for Hough Application Teaching In Digital Photogrammetry
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作者：J.L. Pérez-García ; J. Delgado-García ; J. Cardenal 等
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：2004
卷号：XXXV Part B6
页码：168-173
出版社：Copernicus Publications
摘要：In the last decades, the photogrammetry has experienced important changes. The analytical photogrammetry, and afterwards the digital photogrammetry, has revolutionized the methods, processes and products of the photogrammetric works. These changes must be reflected in the educative university programs dedicated to the study of photogrammetry. In such a way that future technicians can receive an advisable and modern education. The main problems appear because most of the processes in digital photogrammetry are complex, and are solved generally by the digital photogrammetric systems (DP S) of internal way (black-box). In this context, the users (and the students, too) have a limited access to the applied procedures and the obtained partial results, making difficult the correct understanding and learning. A fundamental work of the professors dedicated to the education of the digital photogrammetry is to provide the adequate tools that allow to learn the basic processes through open software in which the student can have a total access to the individual operations (in most of the cases related directly to the treatment of the digital image) as well as to the partial results. With this aim, this paper is about two software applications: OIA program dedicated to the automatic interior orientation of images of metric and non metric cameras, and BUILDING program, dedicated to the automatic extraction of buildings, using the extraction of edges and prismatic models. The final objective of both programs is the knowledge of the Hough transformation application to the Digital Photogrammetry. OIA constitutes complete interior orientation software that uses the Hough Transform for the recognition and measurement of the basic elements that compose the fiduciales marks (circles and lines). This application also allows working with non metric images. In this case, the interior orientation is made by means of the location and measurement of the edges of the image. The program allows the interaction of the operator to know the partial results as well as the final transformation. BUILDING present a more complex application of the Hough transform, the automatic extraction of buildings by means of the extraction of edges in an oriented image using a digital model surface of the zone as additional inf
关键词：Photogrammetry; Education; Software; Transformation; Algorithms; Automation