Denoising Method and System Constrained by Spectrum Characteristics of Remote Sensing Images of Ground Building Groups

Abstract

A denoising method for restraining a spectrum characteristic of a remote sensing image of a ground building group comprises: acquiring a reference image of a target of a ground building group from a remote sensing image library of the ground building group, and performing a Fourier transform on the reference image so as to obtain an amplitude spectrum; performing threshold segmentation, erosion and dilation operations on the result of the amplitude spectrum so as to obtain a binary template of the spectrum of the target of the ground building group; acquiring a real-time image of the target of the ground building group by means of the flight of a high-speed air vehicle, performing a Fourier transform on the real-time image so as to obtain the spectrum; performing frequency-domain filtering processing on the spectrum of the real-time image by using the obtained binary template of the spectrum of the target of the ground building group; and performing an inverse Fourier transform to generate the real-time image of the target of the ground building group after filtering.

Description

technical field [0001] The invention belongs to the intersection field of digital image processing technology and aerospace science and technology, and more specifically relates to a denoising method and system for constraining spectral characteristics of remote sensing images of ground buildings, which are used for remote sensing, detection, navigation and guidance of high-speed aircraft Image preprocessing process. Background technique [0002] Remote sensing, detection, navigation and guidance of high-speed aircraft is an important field in the development of the aerospace industry in the 21st century, and it has important scientific significance and application value in the future high-tech and national economic development. However, due to the high frame rate characteristics of the high-speed aircraft imaging system, the imaging integration time is short, resulting in strong sensor noise; the remote sensing, detection, navigation and guidance based on the high-speed air...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a method and system for denoising the spectrum characteristics of remote sensing images of ground buildings, which are used for the ground buildings obtained during remote sensing, detection, navigation and guidance of high-speed aircraft. The purpose of denoising the real-time image of the group target is to solve the technical problems that the existing denoising method has poor denoising effect on strong noise, and the image is blurred due to the loss of image detail information, which increases the difficulty of subsequent processing.

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