Vehicle track detection in synthetic aperture radar imagery
| DWPI Title: Computing system for vehicle track detection in synthetic aperture radar imagery, in which unary costs of labeling pixels being representative and non representative of vehicle track are based on radial derivative (RDRT) value of pixel |
| Abstract: The various technologies presented herein relate to detecting one or more vehicle tracks in radar imagery. A CCD image can be generated from a first SAR image and a second SAR image captured for a common scene, wherein the second SAR image may include a vehicle track that is not present in the first SAR image. A Radon transform (RT) process can be applied to each pixel in the CCD image, and further, a radial derivative (RDRT) can be determined for each pixel from RT values derived for each pixel. Each pixel can be labelled as being related to a track, or not, based upon a unary cost obtained from the RDRT value of that pixel, combined with a probability of the pixel label based upon labels applied to neighboring pixels. A labelled representation of the CCD image can be generated based upon the determination of “track” or “not track”. |
| Use: Computing system for vehicle, e.g., car, motorcycle, track detection in synthetic aperture radar imagery. Can be also applied to aircraft, e.g., an airplane, an orbiting satellite, a drone, traveling over a scene. |
| Advantage: Automated detection of a vehicle track can be quickly presented to an operator, e.g., a radar image analyst, which can further expedite intelligence gathering and/or response regarding a situation present in the coherent change detection image. |
| Novelty: The computing system has a processor (152) which runs instructions in a memory (154) to determine a RDRT value for each pixel included in a Radon transform representation formed from a coherent change detection image. The unary costs for labeling the pixels as representative and non-representative of a vehicle track (136,137) are evaluated and based on the associated RDRT value. The same pixel is labeled as representative of the track based on unary costs. An indication that the track exists in the detection image is output based on the labeled pixel. |
| Filed: 7/11/2016 |
| Application Number: US15207290A |
| Tech ID: SD 13562.0 |
| 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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