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Lifting orbit spaceborne SAR three-dimensional imaging method and device based on geometric matching

A three-dimensional imaging and geometric technology, applied in the direction of measuring devices, image analysis, image enhancement, etc., can solve the problems of difficult single points with the same name, large differences in brightness and deformation of lifting rail images, matching, etc., to improve accuracy and shorten the experimental period , the experimental conditions also require low effect

Active Publication Date: 2022-03-25
AEROSPACE INFORMATION RES INST CAS
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Problems solved by technology

[0005] In order to solve the problems existing in the prior art, the embodiment of the present disclosure provides a three-dimensional imaging method, device, electronic equipment, storage medium and program product based on geometric matching for ascending and descending rail spaceborne SAR, aiming to solve the problem of brightness in the ascending and descending rail image. There are large differences in deformation and deformation, and it is difficult to match single-point points with the same name and other technical problems

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  • Lifting orbit spaceborne SAR three-dimensional imaging method and device based on geometric matching
  • Lifting orbit spaceborne SAR three-dimensional imaging method and device based on geometric matching
  • Lifting orbit spaceborne SAR three-dimensional imaging method and device based on geometric matching

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[0027] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It should be understood, however, that these descriptions are exemplary only, and are not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present disclosure.

[0028] The terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting of the present disclosure. The terms "comprising", "comprising", etc. used herein indicate the presence of stated features, ...

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Abstract

The invention provides an ascending and descending orbit satellite-borne SAR three-dimensional imaging method based on geometric matching. The method comprises the steps that an SAR ascending orbit image and an SAR descending orbit image are acquired; obtaining scale factors of a first scene center point in the rail-rising image and a second scene center point in the rail-falling image according to the imaging geometry corresponding to the rail-rising image and the rail-falling image; respectively carrying out feature extraction, image segmentation, binarization and morphological processing on the rail-rising image and the rail-falling image to respectively obtain contour features of the rail-rising image and contour features of the rail-falling image; feature matching is carried out on the contour features of the rail rising image and the contour features of the rail falling image, and the feature offset of the rail rising image and the feature offset of the rail falling image are obtained; and obtaining a three-dimensional imaging picture of the ground object target according to the scale factor and the feature offset. The invention further provides a satellite-borne SAR three-dimensional imaging device based on lifting rail geometric matching, electronic equipment, a storage medium and a computer program product.

Description

technical field [0001] The present disclosure relates to the technical field of synthetic aperture radar imaging, and in particular to a three-dimensional imaging method, device, electronic equipment, storage medium, and program product based on geometric matching for spaceborne SAR on ascending and descending orbits. Background technique [0002] Synthetic aperture radar (SAR) has been widely used in the acquisition of earth observation data due to its all-time and all-weather characteristics. Spaceborne SARs carried by spacecraft such as satellites have global imaging capabilities. It has played an irreplaceable role in global military reconnaissance, environmental remote sensing, natural disaster monitoring, and planetary exploration. The spaceborne SAR adopts the conventional mode, and the acquisition of SAR images from one side angle can only obtain the limited angle information of the target. However, the backscattering properties of targets in real scenes are anisot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/90G06T7/10G06T7/33
CPCG01S13/9021G06T7/10G06T7/33G06T2207/10044
Inventor 冯珊珊林赟李光祚胡玉新洪文
Owner AEROSPACE INFORMATION RES INST CAS
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