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http://dx.doi.org/10.7780/kjrs.2021.37.5.1.15

A Study on Non-uniformity Correction Method through Uniform Area Detection Using KOMPSAT-3 Side-Slider Image  

Kim, Hyun-ho (National Satellite Operation & Application Center, Korea Aerospace Research Institute)
Seo, Doochun (National Satellite Operation & Application Center, Korea Aerospace Research Institute)
Jung, JaeHeon (National Satellite Operation & Application Center, Korea Aerospace Research Institute)
Kim, Yongwoo (Department of System Semiconductor Engineering, Sangmyung University)
Publication Information
Korean Journal of Remote Sensing / v.37, no.5_1, 2021 , pp. 1013-1027 More about this Journal
Abstract
Images taken with KOMPSAT-3 have additional NIR and PAN bands, as well as RGB regions of the visible ray band, compared to imagestaken with a standard camera. Furthermore, electrical and optical properties must be considered because a wide radius area of approximately 17 km or more is photographed at an altitude of 685 km above the ground. In other words, the camera sensor of KOMPSAT-3 is distorted by each CCD pixel, characteristics of each band,sensitivity and time-dependent change, CCD geometry. In order to solve the distortion, correction of the sensors is essential. In this paper, we propose a method for detecting uniform regions in side-slider-based KOMPSAT-3 images using segment-based noise analysis. After detecting a uniform area with the corresponding algorithm, a correction table was created for each sensor to apply the non-uniformity correction algorithm, and satellite image correction was performed using the created correction table. As a result, the proposed method reduced the distortion of the satellite image,such as vertical noise, compared to the conventional method. The relative radiation accuracy index, which is an index based on mean square error (RA) and an index based on absolute error (RE), wasfound to have a comparative advantage of 0.3 percent and 0.15 percent, respectively, over the conventional method.
Keywords
KOMPSAT-3; side-slider; non-uniformity correction; remote sensing;
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