Estimating vehicle activity using thermal image sequences and maps


Monitoring traffic in dense build-up areas is a difficult task. In this contribution we describe a method to assess the activity of vehicles based on airborne image sequences from an infrared camera. At the resolution of approximately one meter vehicles appear as elongated spots. In urban areas many additional other objects have the same property. To discriminate vehicles from these objects we fuse information from IR-images and vector-maps. Besides evidence from overlapping areas of frames an IR-sequence is accumulated in the scene. We also perform grouping of vehicles into rows along the margins of the roads. The grouping become feasible through the use of map knowledge as context.
Stilla U, Michaelsen E (2002) Estimating vehicle activity using thermal image sequences and maps. Symposium on geospatial theory, processing and applications. International Archives of Photogrammetry and Remote Sensing. Vol. 34, Part 4
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