METHOD OF PROCESSING A RADAR IMAGE
First Claim
1. Method of processing a radar image from a radar antenna, the radar image comprising a plurality of pixels having an associated reflectivity value, the method comprising the steps of:
- pre-processing the radar image by a first predetermined procedure, to produce a first pre-processed image comprising a plurality of first pixels;
pre-processing the radar image by a second predetermined procedure, to produce a second pre-processed image comprising a plurality of second pixels, the second predetermined procedure comprising the steps of;
extracting an object from the radar image, to produce an extracted object;
calculating an extent and a position of the extracted object by use of an angular aperture between two predetermined signals; and
determining an associated reflectivity value for the second pixels of the extracted object;
for each extracted object, replacing each of the plurality of the first pixels of the first pre-processed image with the corresponding second pixel of the second pre-processed image, if the reflectivity value associated with the second pixel is greater than the reflectivity value of the first pixel,wherein the replaced pixels correspond to zones situated at a distance greater than a predetermined threshold from the radar antenna.
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Abstract
Embodiments of the invention process a radar image arising from a radar antenna, by reading the reflectivity information associated with each pixel forming the radar image, processing the reflectivity information, pixel by pixel, with the aid of a first procedure. The method further includes a second processing of the radar image using a second procedure that includes extracting objects from the radar image, then calculating the extent and the position of each object, with the aid of an angular aperture between two signals. For each part of the radar image processed by the first procedure, corresponding to an extracted object, pixel within the result of the first procedure are replaced by corresponding pixels of the radar image processed by the second procedure, if the reflectivity value associated with the second pixel is greater than the reflectivity value of the first pixel, the parts of the radar image corresponding to zones situated at a distance greater than a given threshold from the radar antenna.
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Citations
13 Claims
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1. Method of processing a radar image from a radar antenna, the radar image comprising a plurality of pixels having an associated reflectivity value, the method comprising the steps of:
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pre-processing the radar image by a first predetermined procedure, to produce a first pre-processed image comprising a plurality of first pixels; pre-processing the radar image by a second predetermined procedure, to produce a second pre-processed image comprising a plurality of second pixels, the second predetermined procedure comprising the steps of; extracting an object from the radar image, to produce an extracted object; calculating an extent and a position of the extracted object by use of an angular aperture between two predetermined signals; and determining an associated reflectivity value for the second pixels of the extracted object; for each extracted object, replacing each of the plurality of the first pixels of the first pre-processed image with the corresponding second pixel of the second pre-processed image, if the reflectivity value associated with the second pixel is greater than the reflectivity value of the first pixel, wherein the replaced pixels correspond to zones situated at a distance greater than a predetermined threshold from the radar antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification