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23 November 2011 Classification of high spatial resolution remote sensing image using SVM and local spatial statistics Getis-Ord Gi
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Proceedings Volume 8006, MIPPR 2011: Remote Sensing Image Processing, Geographic Information Systems, and Other Applications; 80060N (2011) https://doi.org/10.1117/12.901810
Event: Seventh International Symposium on Multispectral Image Processing and Pattern Recognition (MIPPR2011), 2011, Guilin, China
Abstract
In this paper, the support vector machine (SVM) algorithm was utilized to tackle the classification of high resolution images from airborne digital sensor systems. Firstly, the original image was classified using SVM of four common types of kernel functions, namely linear, polynomial, RBF and sigmoid function, and the SVM with RBF kernel function can achieve the most satisfactory result. On the other hand, Getis-Ord Gi, one type of local spatial statistics, had been calculated with varying lags from 1 to 10. When classifying Gi image with lag of 3 using SVM of the RBF kernel function, an overall accuracy of 95.66% was achieved, which is more satisfactory than the result from the original image. The result shows that Gi images with lags less than the variogram range can be used instead of the original multi-spectral image to improve classification accuracy between features with similar spectral characteristics like trees and lawns, as a result, to increase the overall classification accuracy.
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Xinming Wang, Xin Chen, and Maolin Li "Classification of high spatial resolution remote sensing image using SVM and local spatial statistics Getis-Ord Gi", Proc. SPIE 8006, MIPPR 2011: Remote Sensing Image Processing, Geographic Information Systems, and Other Applications, 80060N (23 November 2011); https://doi.org/10.1117/12.901810
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