Image quality improving method and device based on FY-3 satellite imager

The invention provides an image quality improving method and device based on a FY-3 satellite imager. The method comprises the following steps: reading satellite observation data, calculating an atmospheric correction coefficient according to observation geometric information and a positioning file,...

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Bibliographic Details
Main Authors LI WENZHUO, SUN KAIMIN, MIAO SHUNXIA
Format Patent
LanguageChinese
English
Published 30.08.2022
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
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Summary:The invention provides an image quality improving method and device based on a FY-3 satellite imager. The method comprises the following steps: reading satellite observation data, calculating an atmospheric correction coefficient according to observation geometric information and a positioning file, and carrying out atmospheric correction on pixels one by one; optimizing a sampling mode of the GEO1K 1000m positioning file, and carrying out geometric correction on an atmospheric correction result by adopting a GLT geographic lookup table method according to the geographic positioning file; according to a satellite overlapping type scanning imaging mode, piecewise linear truncation is carried out according to verification of a large number of experiences; and performing target area splicing and feathering transition on the reprojected surface reflectance image, and preferentially adopting a sub-satellite point or near sub-satellite point imaging candidate image in an image overlapping area. According to the met
Bibliography:Application Number: CN202210271755