منابع مشابه
Automatic Extraction of Buildings and Terrain from Aerial Images *
A system has been developed to acquire, extend and refine 3D geometric site models from aerial imagery. The system hypothesizes potential building roofs in an image, automatically locates supporting geometric evidence in other images, and determines the precise shape and position of the new buildings via multi-image triangulation. Model-to-image registration techniques are applied to align new ...
متن کاملAutomatic Extraction of Buildings from Lidar Data and Aerial Images
This paper is focused on two topics: first, it deals with a technique for the automated generation of 3D building models from directly observed LIDAR point clouds and digital aerial images, and second, it describes an object-relational technique for handling hybrid topographic data in a topographic information system. Automatic building extraction combining the mentioned data sources consists o...
متن کامل3D Power Line Extraction from Multiple Aerial Images
Power lines are cables that carry electrical power from a power plant to an electrical substation. They must be connected between the tower structures in such a way that ensures minimum tension and sufficient clearance from the ground. Power lines can stretch and sag with the changing weather, eventually exceeding the planned tolerances. The excessive sags can then cause serious accidents, whil...
متن کاملDetecting buildings in aerial images
Detecting building structures in aerial images is a task of importance for many applications. Low-level segmentation rarely gives a complete outline of the desired structures. We use a generic model of the shapes of the structures we are looking for-that they are rectangular or composed of rectangular components. We also use shadows cast by buildings to con&m their presence and to estimate thei...
متن کاملAn improved snake model for automatic extraction of buildings from urban aerial images and LiDAR data
Automatic extraction of objects from images has been a topic of research for decades. The main aim of these researches is to implement a numerical algorithm in order to extract the planar objects such as buildings from high resolution images and altitudinal data. Active contours or snakes have been extensively utilized for handling image segmentation and classification problems. Parametric acti...
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ژورنال
عنوان ژورنال: The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
سال: 2012
ISSN: 2194-9034
DOI: 10.5194/isprsarchives-xxxviii-4-w19-193-2011