Quantitative Assessment of Transformation Based Satellite Image Pan-sharpening Algorithms

Tabib Mahmoudi, F.; Karami, A.

doi:10.22061/jecei.2020.7191.367

Document Type : Original Research Paper

Authors

Department of Geomatics, Faculty of Civil Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran.

10.22061/jecei.2020.7191.367

Abstract

Background and Objectives: Pan-sharpening algorithms integrate the spectral capabilities of the multispectral imagery with the spatial details of the panchromatic one to obtain a product with confident spectral and spatial resolutions. Due to the large diversities in the utilized pan-sharpening algorithms, occurring spatial and spectral deviations in their results should be recognized by performing the quantitative assessment analysis.
Methods: In this research, the pan-sharpened images from PCA, IHS, and Gram-Schmidt transformation based algorithms are evaluated for the multi-spectral and panchromatic images fusion of Landsat-8 OLI sensor (medium scale resolution satellite) and WorldView-2 (high-resolution satellite). Quantitative analysis is performed on the pan-sharpened products based on the Per-Pixel Deviation (PPD) measure for spectral deviation analysis and high-pass filter and edge extraction measures for analyzing the spatial correlations. Moreover, entropy and standard deviation quantitative evaluation measures are also utilized based on the pan-sharpened image content.
Results: Quantitative analysis represents that increasing the spatial resolution of the utilized remote sensing data has direct impacts on the spectral, spatial, and content-based characteristics of the generated Pan-sharpened products. Gram-Schmidt transformation based pan-sharpening method has the least spectral deviations in both WorldView-2 and Landsat-8 satellite images. But, the amount of spectral, spatial and content-based quantitative measures of PCA and IHS are changing with various spatial resolutions.
Conclusion: it can be said that Gram-Schmidt pan-sharpening method has the best performance in both medium-scale and high-resolution data sets based on the spectral, spatial, and content quantitative evaluation results. The IHS pan-sharpening method has better performance than the PCA method in Landsat-8 OLI data. But, by increasing the spatial resolution of the data, PCA generates pan-sharpened products with better spectral, spatial, and content based quantitative evaluation results.

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Copyrights
©2020 The author(s). This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, as long as the original authors and source are cited. No permission is required from the authors or the publishers.
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Keywords

Main Subjects

Data Fusion

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Journal of Electrical and Computer Engineering Innovations (JECEI)

Quantitative Assessment of Transformation Based Satellite Image Pan-sharpening Algorithms

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Volume 8, Issue 2
Summer and Autumn 2020
Pages 161-168

Quantitative Assessment of Transformation Based Satellite Image Pan-sharpening Algorithms

References

References

Send comment about this article

Volume 8, Issue 2Summer and Autumn 2020Pages 161-168

Volume 8, Issue 2
Summer and Autumn 2020
Pages 161-168