Comparative Analysis of Feature Extraction and Pixel-based Classification of High-Resolution Satellite Images Using Geospatial Techniques

Comparative Analysis of Feature Extraction and Pixel-based Classification of High-Resolution Satellite Images Using Geospatial Techniques

Two common techniques for classifying satellite imagery are pixel-based and Feature extraction image analysis methods. Typically, for agreements reached imaging, pixel-based analysis is used, whereas high-resolution imagery is suitable for Feature extraction analysis. However, In the classification...

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Bibliographic Details
Published in:E3S Web of Conferences Vol. 318; p. 4007
Main Authors: Musleh, Alaa Adnan, Jaber, Hussein Sabah
Format: Journal Article Conference Proceeding
Language:English
Published: Les Ulis EDP Sciences 2021
Subjects:
Accuracy
Asphalt
Classification
Comparative analysis
Comparative studies
envi
Feature extraction
gis
High resolution
Image analysis
Image classification
Image processing
Image resolution
Image segmentation
Land cover
Land use
pixel-based
Pixels
remote sensing
Satellite imagery
Soil water
Support vector machines
Water bodies
Baghdad Iraq
Iraq
Online Access:Get full text
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Summary:Two common techniques for classifying satellite imagery are pixel-based and Feature extraction image analysis methods. Typically, for agreements reached imaging, pixel-based analysis is used, whereas high-resolution imagery is suitable for Feature extraction analysis. However, In the classification of moderate images, image segmentation's ability depending on criteria such as shape, color, texture, and spatial features in Feature extraction image analysis implies it can perform better than pixel-based analysis. A comparative study of the two methods was performed using Sentinel-2 imagery from 18 May 2020 to categorize LU/LC in the City of Baghdad, Iraq. After calculating LU/LC for Baghdad images' capital, a supervised classification was performed using the two methods. The images used have been the support vector machines (SVM) and the maximum likelihood classification (MLC) for pixel-based method and Feature extraction method, which is available in ENVI and ArcGIS software packages, respectively. Land cover and land use classes included five Groups (vegetation area, asphalt road, soil area, water body, and built-up) was found that the Feature extraction methodology produced higher overall accuracy and Kappa index in the city of Baghdad image. The highest achieved accuracy for the Feature extraction technique was overall accuracy 95% with Kappa index 0.94 of SVM and overall accuracy of 92% with Kappa index 0.90 of MLC. In comparison, the highest accuracy for the pixel-based was overall accuracy 88% with Kappa index 0.84 of SVM and overall accuracy 86% with Kappa index 0.82 of MLC.
ISSN:2267-1242
2555-0403
2267-1242
DOI:10.1051/e3sconf/202131804007