Atmospheric Correction of True-Color RGB Imagery with Limb Area-Blending Based on 6S and Satellite Image Enhancement Techniques Using Geo-Kompsat-2A Advanced Meteorological Imager Data SCIE SCOPUS KCI

Cited 1 time in WEB OF SCIENCE Cited 0 time in Scopus
Title
Atmospheric Correction of True-Color RGB Imagery with Limb Area-Blending Based on 6S and Satellite Image Enhancement Techniques Using Geo-Kompsat-2A Advanced Meteorological Imager Data
Author(s)
Kim, Min Sang; Heo, Jun-Hyun; Sohn, Eun-Ha
Alternative Author(s)
김민상
Publication Year
2022-08
Abstract
This study aims for producing high-quality true-color red-green-blue (RGB) imagery that is useful for interpreting various environmental phenomena, particularly for GK2A. Here we deal with an issue that general atmospheric correction methods for RGB imagery might be breakdown at high solar/viewing zenith angle of GK2A due to erroneous atmospheric path lengths. Additionally, there is another issue about the green band of GK2A of which centroid wavelength (510 nm) is different from that of natural green band (555 nm), resulting in the unrealistic RGB imagery. To overcome those weakness of the RGB imagery for GK2A, we apply the second simulation of the satellite signal in the solar spectrum radiative transfer model look-up table with improved information considering altitude of the reflective surface to reduce the exaggerated atmospheric correction, and a blending technique that mixed the true-color imagery before and after atmospheric correction which produced a naturally expressed true-color image. Consequently, the root mean square error decreased by 0.1–0.5 in accordance with the solar and view zenith angles. The green band signal was modified by combining it with a veggie band to form hybrid green which adjust centroid wavelength of approximately 550 nm. The original composite of true-color RGB imagery is dark; therefore, to brighten the imagery, histogram equalization is conducted to flatten the color distribution. High-temporal-resolution true-color imagery from the GK2A AMI have significant potential to provide scientists and forecasters as a tools to visualize the changing Earth and also expected to intuitively understand the atmospheric phenomenon to the general public. © 2021, The Author(s).
ISSN
1976-7633
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/42241
DOI
10.1007/s13143-021-00257-y
Bibliographic Citation
Asia-Pacific Journal of Atmospheric Sciences, v.58, no.3, pp.333 - 352, 2022
Publisher
Korean Meteorological Society
Keywords
Look-up table; Radiative transfer model; Rayleigh scattering; Solar Zenith angle; True-color imagery; Atmospheric correction
Type
Article
Language
English
Document Type
Article; Early Access
Publisher
Korean Meteorological Society
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse