An Overview of Geolocation of Airborne Video Using 3D Models
DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION EDINBURGH (AUSTRALIA) INTELLIGENCE SURVEILLANCE AND RECONNAISSANCE DIV
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This is an overview report which describes a method for automatic geolocation of video from an airborne sensor. The approach described here uses positional information from three sources to compute refined coordinates in three dimensions for any feature in the video sequence. These three sources are firstly, sensor-platform metadata describing the likely sensor footprint based on sensor-platform positional and attitudinal information secondly, 3D information of a scene inherent in a video sequence collected from a moving platform and thirdly, reference imagery of the region of interest that is geolocated and georectified such as aerial photography. The report describes the steps involved in this process, which have been successfully applied individually to two types of imagery infrared MX-20 data, and high definition data from project Crystal View. Investigation into the final 2D registration stage and 3D registration with a CAD model is ongoing.