Results 11 to 20 of about 221,330 (163)

Estimation and improvement in the geolocation accuracy of rational polynomial coefficients with minimum GCPs using KOMPSAT-3A

GIScience & Remote Sensing, 2020
In this paper, we propose a method to regenerate Rational Polynomial Coefficients (RPCs) using KOMPSAT-3A imagery and to reduce the geolocation error using minimum ground control points (GCPs).
Namhoon Kim, Yoonjo Choi, Junsu Bae, Hong-Gyoo Sohn   +3 more
doaj   +6 more sources

Radiometric Cross-calibration of KOMPSAT-3A with Landsat-8 [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
In this study, Cross calibration was conducted at the Libya 4 PICS site on 2015 using Landsat-8 and KOMPSAT-3A. Ideally a cross calibration should be calculated for each individual scene pair because on any given date the TOA spectral profile is ...
D. Y. Shin, H. Y. Ahn, S. G. Lee, C. U. Choi, J. S. Kim   +4 more
doaj   +5 more sources

Precision and Characteristics of Satellite Spatial Quality Estimators’ Measurement Using an Edge Target Imaged with KOMPSAT-3A

Remote Sensing
After the launch of a high-resolution remote sensing satellite, representative spatial quality estimators (RER, FWHM, MTF50, MTFA) are measured from images taken of ground Edge targets.
Donghan Lee, Daesoon Park, Daehoon Yoo
doaj   +4 more sources

RPC Correction Coefficient Extrapolation for KOMPSAT-3A Imagery in Inaccessible Regions

Remote Sensing
High-resolution pushbroom satellites routinely acquire multi-tenskilometer-scale strips whose vendors’ rational polynomial coefficients (RPCs) exhibit systematic, direction-dependent biases that accumulate downstream when ground control is sparse.
Namhoon Kim
doaj   +4 more sources

Absolute Radiometric Calibration of KOMPSAT-3A [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
This paper presents a vicarious radiometric calibration of the Korea Multi-Purpose Satellite-3A (KOMPSAT-3A) performed by the Korea Aerospace Research Institute (KARI) and the Pukyong National University Remote Sensing Group (PKNU RSG) in 2015.The ...
H. Y. Ahn, D. Y. Shin, J. S. Kim, D. C. Seo, C. U. Choi   +4 more
doaj   +4 more sources

Analysis of Geometric and Spatial Image Quality of KOMPSAT-3A Imagery in Comparison with KOMPSAT-3 Imagery

Korean Journal of Remote Sensing, 2017
This study investigates the geometric and spatial image quality analysis of KOMPSAT-3A stereo pair. KOMPSAT-3A is, the latest satellite of KOMPSAT family, a Korean earth observation satellite operating in optical bands. A KOMPSAT-3A stereo pair was taken on 23 November, 2015 with 0.55 m ground sampling distance over Terrassa area of Spain.
Nyamjargal Erdenebaatar, Jaein Kim, Taejung Kim   +2 more
exaly   +5 more sources

Statistical Assessment of Accuracy and Precision in Satellite Spatial Quality Measurement Using Natural Edge Targets from KOMPSAT-3A

Remote Sensing
The spatial quality (RER, FWHM, MTF50, and MTFA) of an on-orbit high-resolution Earth observation satellite was statistically assessed using edges extracted from natural targets in urban imagery, rather than from a ground-based artificial edge target ...
DongHan Lee, Daehoon Yoo
doaj   +3 more sources

A Double Epipolar Resampling Approach to Reliable Conjugate Point Extraction for Accurate Kompsat-3/3A Stereo Data Processing

Remote Sensing, 2020
Kompsat-3/3A provides along-track and across-track stereo data for accurate three-dimensional (3D) topographic mapping. Stereo data preprocessing involves conjugate point extraction and acquisition of ground control points (GCPs), rational polynomial ...
Jaehong Oh, Youkyung Han
doaj   +2 more sources

KOMPSAT-3/3A Image-text Dataset for Training Large Multimodal Models [PDF]

Geo Data
This study aims to improve the accuracy and interpretability of large multimodal models (LMMs) specialized in satellite image analysis by constructing an image-text dataset based on KOMPSAT-3/3A imagery and presenting the results of training using this ...
Han Oh, Dong-Bin Shin, Dae-Won Chung
doaj   +2 more sources

An Implementation of Open Source-Based Software as a Service (SaaS) to Produce TOA and TOC Reflectance of High-Resolution KOMPSAT-3/3A Satellite Image

Remote Sensing, 2021
The majority of cloud applications are created or delivered to provide users with access to system resources or prebuilt processing algorithms for efficient data storage, management, and production.
Kwangseob Kim, Kiwon Lee
doaj   +2 more sources