Optical remote sensing satellite relative radiation correction method based on radiation energy reconstruction
A technology of relative radiation correction and radiation energy, which is applied in the field of relative radiation correction of optical remote sensing satellites based on radiation energy reconstruction, and can solve the problems of poor radiation correction effect of remote sensing images
Pending Publication Date: 2021-10-01
CHINA CENT FOR RESOURCES SATELLITE DATA & APPL
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Problems solved by technology
[0004] The technical problem to be solved by this application is: the radiation correction effect of remote sensing images in the prior art is poor
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[0041] In the solutions provided by the embodiments of the present application, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0042]In order to better understand the above technical solution, a method for correcting the relative radiation of optical remote sensing satellites based on radiation energy reconstruction provided by the embodiment of the present application will be further described in detail below in conjunction with the accompanying drawings. The specific implementation of the method may include the following Steps (method flow such as figure 1 and figure 2 shown):
[0043] Step 101, acquire the statistical sample data and the data to be corrected, respectively perform inter-slice matching o...
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The invention discloses an optical remote sensing satellite relative radiation correction method based on radiation energy reconstruction, and the method comprises the steps of obtaining statistical sample data and to-be-corrected data, carrying out the inter-slice matching of two adjacent pieces of data in each scene of data of the statistical sample data and the to-be-corrected data, and obtaining an inter-slice matching result; calculating an inter-chip offset according to an inter-chip matching result, and performing lap joint area energy reconstruction according to the inter-chip offset of two adjacent chips to obtain reconstructed statistical sample data and reconstructed to-be-corrected data; determining a relative radiation correction coefficient according to the reconstructed statistical sample data, and performing first relative radiation correction on the reconstructed to-be-corrected data according to the relative radiation correction coefficient to obtain first relative radiation correction data; and performing second relative radiation correction on the first relative radiation correction data according to a preset moment matching method to obtain second relative radiation correction data. The technical problem that the remote sensing image radiation correction effect is poor in the prior art is solved.
Description
technical field [0001] The present application relates to the technical field of aerospace optical remote sensing image processing, in particular to a relative radiation correction method for optical remote sensing satellites based on radiation energy reconstruction. Background technique [0002] Optical remote sensing satellite cameras generally use multiple panchromatic multispectral TDICCDs for mirror splicing. However, the mirror splicing method will cause vignetting phenomenon in the overlapping area of the image. The reasons for the vignetting phenomenon mainly include the following two factors: First, the light energy on the imaging surface at the center of the splicing is caused by the occlusion of the mirror. The vignetting caused by loss; the second is the vignetting caused by the light and dark stripes in the overlapping area of the image generated by the straight-edge diffraction of the light on the edge of the mirror as the distance from the overlapping cent...
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Login to View More IPC IPC(8): G06T5/00G06T5/40G06K9/62
CPCG06T5/40G06F18/22G06T5/70
Inventor 龙小祥赫华颖李庆鹏乔敏郭明珠刘啸添郭正齐田甜
Owner CHINA CENT FOR RESOURCES SATELLITE DATA & APPL