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SAR image scallop suppression processing method and device

A processing method and image technology, applied in the field of image processing, can solve problems such as poor suppression effect, influence, and increase in image difficulty, and achieve the effect of suppressing scallop effect and improving quality

Pending Publication Date: 2022-06-28
BEIHANG UNIV
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Problems solved by technology

The scallop effect has a great impact on the image quality, which increases the difficulty of the subsequent application of the image
[0004] In related technologies, although there are some methods that can suppress the scallop effect of SAR images, the suppression effect is not good.

Method used

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  • SAR image scallop suppression processing method and device
  • SAR image scallop suppression processing method and device
  • SAR image scallop suppression processing method and device

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Embodiment Construction

[0065] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection of the present invention. scope.

[0066] As mentioned above, although related technologies have been able to suppress the scallop effect of SAR images, the suppression effect is not good, and there are still scallop stripes in the processed SAR image.

[0067] In order to solve the above technical problems, it can be considered to segment the SAR image, and then divide the segmented sub...

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Abstract

The embodiment of the invention relates to the technical field of image processing, in particular to a processing method and device for SAR (Synthetic Aperture Radar) image scallop suppression. The method comprises the following steps: carrying out threshold segmentation on a to-be-processed SAR image to obtain a first sub-image and a second sub-image; wherein the pixel value of each pixel point in the first sub-image is greater than a preset threshold value, and the pixel value of each pixel point in the second sub-image is not greater than the preset threshold value; partitioning the second sub-image in the distance direction to obtain at least two image blocks; secondly, performing Kalman filtering processing on all image blocks included in the second sub-image, and merging all the image blocks after Kalman filtering processing to obtain a target sub-image; and finally, combining the first sub-image and the target sub-image to obtain a target SAR image. According to the SAR image processing method provided by the invention, the scallop effect in the image can be effectively inhibited, and the quality of the image is improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of image processing, in particular to a processing method and device for SAR image scallop suppression. Background technique [0002] Spaceborne ScanSAR (Scanning Synthetic Aperture Radar), as a working mode of the SAR system, can achieve wide-coverage observation of the observation area by changing the observation angle within a wide range of angles. This working mode has high imaging efficiency, especially for large-scale observation areas with rapid changes, such as crop growth change detection and flood disaster prevention and control, and has very important application significance. [0003] In the SAR working mode, since the scanning of the antenna beam to the observation area is discontinuous, the transfer function of the SAR system changes with space and time, resulting in the existence of bright and dark noise stripes in the SAR image after imaging processing , the scallop eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T7/11G06T7/136G06K9/62G06V10/764
CPCG06T7/11G06T7/136G06T2207/10044G06T2207/30181G06F18/241G06T5/00
Inventor 杨威史瑛如陈杰曾虹程李春升
Owner BEIHANG UNIV
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