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Method and device for enhancing radiometric resolution of SAR image based on multi-angle image

A multi-angle, resolution technology, applied in the field of image processing, to achieve the effect of improving radiation resolution and improving robustness

Active Publication Date: 2019-01-04
BEIHANG UNIV
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Problems solved by technology

[0009] The purpose of the present invention is to solve at least part of the technical problems in the prior art. It provides a method, device and computer storage medium for improving the radiation resolution of SAR images based on multi-angle images. Sequential images based on multi-angle observations use improved Non-local Mean Algorithm Improves SAR Image Resolution

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  • Method and device for enhancing radiometric resolution of SAR image based on multi-angle image
  • Method and device for enhancing radiometric resolution of SAR image based on multi-angle image

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[0061] The characteristics and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only configured to explain the present invention, not to limit the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention.

[0062] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and ...

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Abstract

The invention relates to a SAR image radiation resolution enhancement method based on a multi-angle image, a device and a computer storage medium. The method is characterized in that: the multi-angleimage based on the SAR image is pretreated, and the pretreatment at least comprises a unified quantization process and a complementary edge process; a non-local mean filtering process is performed onone of the multi-angle images as a base image to obtain a reference image; the reference image and the unprocessed multi-angle image are combined with non-local mean filtering to obtain a reconstructed image of the image; the reconstructed image is used as a new reference image to continue the joint non-local mean filtering processing of the unprocessed multi-angle images until the preset conditions are reached or all the multi-angle images are processed and the final reconstructed image is used as the observation image of the target area. The invention can effectively improve the radiation resolution of an image, and at the same time, the detail information in the image is well retained.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a multi-angle image-based SAR (Synthetic Aperture Radar) image radiation resolution improvement method, device and computer storage medium. Background technique [0002] Today, synthetic aperture radar has become one of the important means of earth observation due to its excellent characteristics such as all-weather, all-time, high precision and wide range, and is widely used in military and civilian fields. In SAR images, radiation resolution reflects its ability to distinguish the backscatter coefficients between targets, and is used to measure the image grayscale resolution. The level of image radiation resolution will affect the subsequent applications such as edge detection, segmentation and recognition of the image to a certain extent. Therefore, how to improve the radiometric resolution of SAR images is an important part of SAR image processing. [0003]...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T5/50
CPCG06T5/50G06T2207/10044G06T2207/20024G06T5/00
Inventor 杨威李依晗陈杰李春升
Owner BEIHANG UNIV
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