Terrain detection and classification using single polarization SAR
| DWPI Title: Image processing system of radar system, has processor which generates long term coherent change detection (LCCD) image, and analyzes LCCD image and labels first pixel in LCCD image as corresponding to paved roadway |
| Abstract: The various technologies presented herein relate to identifying manmade and/or natural features in a radar image. Two radar images (e.g., single polarization SAR images) can be captured for a common scene. The first image is captured at a first instance and the second image is captured at a second instance, whereby the duration between the captures are of sufficient time such that temporal decorrelation occurs for natural surfaces in the scene, and only manmade surfaces, e.g., a road, produce correlated pixels. A LCCD image comprising the correlated and decorrelated pixels can be generated from the two radar images. A median image can be generated from a plurality of radar images, whereby any features in the median image can be identified. A superpixel operation can be performed on the LCCD image and the median image, thereby enabling a feature(s) in the LCCD image to be classified. |
| Use: Image processing system of radar system. |
| Advantage: The feature(s) in the LCCD image are able to be classified by performing super-pixel operation on the LCCD image and the median image. Since the probability fusion process is performed to classify features, false alarms are significantly rejected. |
| Novelty: The image processing system (135) has a single polarization synthetic aperture radar (SAR) imager which captures single polarization SAR images (120-123) of a scene, comprising pixels (124-127). A processor (144) is programmed to generate a LCCD image (150) from first SAR image in single polarization SAR images and second SAR image in single polarization SAR images, and analyze the LCCD image and label first pixel in the LCCD image as corresponding to paved roadway. |
| Filed: 10/21/2014 |
| Application Number: US14519278A |
| Tech ID: SD 13151.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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