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Rigorous Co-Registration of KOMPSAT-3 Multispectral and Panchromatic Images for Pan-Sharpening Image Fusion.

Changno Lee¹, Jaehong Oh²

¹Department of Civil Engineering, Seoul National University of Science and Technology, Seoul 01811, Korea.

Sensors (Basel, Switzerland)

|April 12, 2020

Summary

Precise co-registration of KOMPSAT-3 satellite images is essential for fusing panchromatic (PAN) and multispectral (MS) data. Physical sensor modeling effectively corrects geometric discrepancies, enabling high-resolution fused imagery.

Keywords:

AEISS KOMPSAT-3 co-registration image fusion pan-sharpening

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Area of Science:

Remote Sensing
Photogrammetry
Geospatial Analysis

Background:

KOMPSAT-3 satellite provides Panchromatic (PAN) and Multispectral (MS) bands for Earth observation.
Image fusion of PAN and MS bands enhances spatial and spectral resolution, improving interpretability.
Accurate sensor alignment and correction for external factors are critical for effective image fusion.

Purpose of the Study:

To develop a rigorous co-registration method for KOMPSAT-3 MS and PAN images.
To address geometric discrepancies caused by sensor offsets and external effects.
To enable high-quality pan-sharpened imagery through precise image alignment.

Main Methods:

Physical sensor modeling for rigorous co-registration of KOMPSAT-3 images.
Evaluation of Charge-Coupled Device (CCD) line offsets, ephemeris, and terrain elevation impacts.
Development of a precise co-registration model based on physical sensor characteristics.

Main Results:

Identified and quantified the impact of CCD line offsets, ephemeris, and terrain elevation on image coordinate differences.
Developed a precise co-registration model for KOMPSAT-3 MS and PAN images.
Achieved negligible geometric discrepancy between co-registered MS and PAN images in experimental results.

Conclusions:

Rigorous co-registration based on physical sensor modeling is crucial for KOMPSAT-3 image fusion.
The proposed method effectively mitigates geometric errors, ensuring accurate alignment.
This technique facilitates the generation of high-fidelity pan-sharpened images for advanced Earth observation applications.