A method about building extraction from high-resolution remote sensing images

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In this paper, an effective and highly automated method of building extraction, which can distinguish the top of a building from the elevation under the constraint of elevation contour lines, from a monocular optical high resolution image is proposed. Compared with the method of using shadows as auxiliary information, the elevation contours of the building can not only accurately locate the building, but also better reflect the relationship between the building roof and elevation. Moreover, image segmentation with Grab-Cut can better preserve the entire building boundary.

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