Automatic Extraction of Trees in Urban Areas from Aerial Imagery
نویسندگان
چکیده
In this paper we propose an approach for the automatic extraction of leafless deciduous trees from high resolution, i.e., ca. 4 cm ground resolution, aerial imagery taken in spring. In analogy to approaches for building extraction, we make use of the dark shadow of the tree as well as of the fact that the vertical trunk is imaged as a straight line pointing to the nadir point. Hypotheses for the trunk are found via the Hough transform. Branches are tracked by means of hysteresis thresholding. With our approach, it is possible to determine the trunk base, height, and width of the tree. Results show the potential of the approach.
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