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Optical remote sensing satellite relative radiation correction method based on statistical sample weighting

A technology of relative radiation correction and statistical samples, which is applied in the field of relative radiation correction of optical remote sensing satellites based on statistical sample weighting, and can solve problems such as poor image correction effect

Pending Publication Date: 2021-09-10
CHINA CENT FOR RESOURCES SATELLITE DATA & APPL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem solved by this application is: the correction effect of the image collected when the state of the detector jumps in the prior art is poor

Method used

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  • Optical remote sensing satellite relative radiation correction method based on statistical sample weighting
  • Optical remote sensing satellite relative radiation correction method based on statistical sample weighting
  • Optical remote sensing satellite relative radiation correction method based on statistical sample weighting

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Embodiment Construction

[0031] 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.

[0032] A method for correcting relative radiation of optical remote sensing satellites based on statistical sample weighting 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 (the method flow is as follows: figure 1 shown):

[0033] Step 101, collect 0-level data according to the preset start time, preset end time and preset statistical period as the statistical sample corresponding to the Nth month, and perform histogr...

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Abstract

The invention discloses an optical remote sensing satellite relative radiation correction method based on statistical sample weighting, and the method comprises the steps: collecting 0-level data as a statistical sample corresponding to an Nth month according to preset starting time, preset ending time and a preset statistical period, and carrying out the histogram statistics and matching according to the statistical sample to obtain a first gray lookup table, and correcting the remote sensing satellite image corresponding to the Nth month according to the first gray lookup table to obtain an image after initial correction; judging whether strip noise exists in a lap joint area in the image after initial correction; if yes, adjusting preset starting time, ending time and a statistical period; and correcting the remote sensing satellite image corresponding to the Nth month according to the adjusted starting time, ending time and statistical period to obtain a corrected image. The technical problem that in the prior art, the correction effect of the image collected when the state of the detector jumps is poor 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 statistical sample weighting. Background technique [0002] Optical remote sensing satellite cameras generally use multiple panchromatic multi-spectral TDICCDs for mirror splicing, while CCD mirror splicing uses spectroscopic mirrors to divide the image plane into multiple image planes that are space-separated, and multiple image planes can be arranged alternately on each image plane. CCD, and make the pixels at the boundary of two adjacent CCDs meet the overlapping requirements to form an equivalent large field of view detector. However, the mirror splicing method will produce vignetting in the overlapping area, so that the radiation energy in the overlapping area will gradually decrease, and the consistency of the radiation response between t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T5/40G06T7/90
CPCG06T5/40G06T7/90G06T2207/10032G06T5/70
Inventor 赫华颖龙小祥齐怀川刘啸添乔敏郭明珠郭正齐田甜
Owner CHINA CENT FOR RESOURCES SATELLITE DATA & APPL
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