| Abstract: | Various embodiments presented herein relate to identifying one or more
edges in a synthetic aperture radar (SAR) image comprising a plurality of
superpixels. Superpixels sharing an edge (or boundary) can be identified
and one or more properties of the shared superpixels can be compared to
determine whether the superpixels form the same or two different
features. Where the superpixels form the same feature the edge is
identified as an internal edge. Where the superpixels form two different
features, the edge is identified as an external edge. Based upon
classification of the superpixels, the external edge can be further
determined to form part of a roof, wall, etc. The superpixels can be
formed from a speckle-reduced SAR image product formed from a registered
stack of SAR images, which is further segmented into a plurality of
superpixels. The edge identification process is applied to the SAR image
comprising the superpixels and edges. |