Evaluating the Accuracy of Fused OLI Images for Land Cover Classification: A Case Study of Al-Kut City
DOI:
https://doi.org/10.31185/wjfh.Vol21.Iss4.1230Keywords:
data fusion, gram Schmitt, region of interestAbstract
Data fusion is a key technique in remote sensing, enabling the integration of multisensory data to produce more accurate and comprehensive representations of the Earth’s surface. Pan-sharpening, particularly the Gram–Schmidt (GS) method, enhances the spatial resolution of multispectral imagery while maintaining spectral fidelity, making it well-suited for Landsat 8 OLI data. This study evaluates the effectiveness of GS pan-sharpening in improving land-cover classification for Kut city, Iraq. Maximum Likelihood Classification (MLC) was adopted as the primary supervised approach, with regions of interest (ROIs) carefully selected and refined through post-classification analysis. Accuracy assessment using confusion matrices showed overall accuracies of 89.35% for 30 m imagery and 78.99% for 15 m imagery, supported by high Kappa coefficients. The results highlight the advantages of integrating GS pan-sharpening with MLC, offering a reliable framework for land-cover mapping and supporting applications in agriculture, environmental monitoring, and urban planning.
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