Superpixel edges for boundary detection

摘要

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.

主权项

1. A computing system comprising:
a processor; and memory that comprises instructions that, when executed by the processor, cause the processor to perform acts comprising:
comparing a first property of a first superpixel assigned to a first pixel in a first radar image and a second property of a second superpixel assigned to the first pixel in the first radar image, wherein the first pixel is included in a first edge of the first superpixel; andin response to determining the first property and the second property are similar, identifying the first superpixel and the second superpixel as having similar radar-reflecting properties and labeling the first edge as an internal edge; orin response to determining the first property and the second property are dissimilar, identifying the first superpixel and the second superpixel as having contrasting radar-reflecting properties and labeling the first edge as an external edge.