Decision Fusion at Pixel Level of Multi-Band Data for Land Cover Classification—A Review

According to existing signatures for various kinds of land cover coming from different spectral bands, i.e., optical, thermal infrared and PolSAR, it is possible to infer about the land cover type having a single decision from each of the spectral bands. Fusing these decisions, it is possible to rad...

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Main Authors: Spiros Papadopoulos, Georgia Koukiou, Vassilis Anastassopoulos
Format: Article
Language:English
Published: MDPI AG 2024-01-01
Series:Journal of Imaging
Subjects:
Online Access:https://www.mdpi.com/2313-433X/10/1/15
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author Spiros Papadopoulos
Georgia Koukiou
Vassilis Anastassopoulos
author_facet Spiros Papadopoulos
Georgia Koukiou
Vassilis Anastassopoulos
author_sort Spiros Papadopoulos
collection DOAJ
description According to existing signatures for various kinds of land cover coming from different spectral bands, i.e., optical, thermal infrared and PolSAR, it is possible to infer about the land cover type having a single decision from each of the spectral bands. Fusing these decisions, it is possible to radically improve the reliability of the decision regarding each pixel, taking into consideration the correlation of the individual decisions of the specific pixel as well as additional information transferred from the pixels’ neighborhood. Different remotely sensed data contribute their own information regarding the characteristics of the materials lying in each separate pixel. Hyperspectral and multispectral images give analytic information regarding the reflectance of each pixel in a very detailed manner. Thermal infrared images give valuable information regarding the temperature of the surface covered by each pixel, which is very important for recording thermal locations in urban regions. Finally, SAR data provide structural and electrical characteristics of each pixel. Combining information from some of these sources further improves the capability for reliable categorization of each pixel. The necessary mathematical background regarding pixel-based classification and decision fusion methods is analytically presented.
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spelling doaj.art-55fdd3ff9ff446f7ad6186f34b99ac572024-01-26T17:11:02ZengMDPI AGJournal of Imaging2313-433X2024-01-011011510.3390/jimaging10010015Decision Fusion at Pixel Level of Multi-Band Data for Land Cover Classification—A ReviewSpiros Papadopoulos0Georgia Koukiou1Vassilis Anastassopoulos2Electronics Laboratory, Physics Department, University of Patras, 26504 Patras, GreeceElectronics Laboratory, Physics Department, University of Patras, 26504 Patras, GreeceElectronics Laboratory, Physics Department, University of Patras, 26504 Patras, GreeceAccording to existing signatures for various kinds of land cover coming from different spectral bands, i.e., optical, thermal infrared and PolSAR, it is possible to infer about the land cover type having a single decision from each of the spectral bands. Fusing these decisions, it is possible to radically improve the reliability of the decision regarding each pixel, taking into consideration the correlation of the individual decisions of the specific pixel as well as additional information transferred from the pixels’ neighborhood. Different remotely sensed data contribute their own information regarding the characteristics of the materials lying in each separate pixel. Hyperspectral and multispectral images give analytic information regarding the reflectance of each pixel in a very detailed manner. Thermal infrared images give valuable information regarding the temperature of the surface covered by each pixel, which is very important for recording thermal locations in urban regions. Finally, SAR data provide structural and electrical characteristics of each pixel. Combining information from some of these sources further improves the capability for reliable categorization of each pixel. The necessary mathematical background regarding pixel-based classification and decision fusion methods is analytically presented.https://www.mdpi.com/2313-433X/10/1/15land cover classificationdecision fusionpixel-levelmulti-band datathermal imagesSAR images
spellingShingle Spiros Papadopoulos
Georgia Koukiou
Vassilis Anastassopoulos
Decision Fusion at Pixel Level of Multi-Band Data for Land Cover Classification—A Review
Journal of Imaging
land cover classification
decision fusion
pixel-level
multi-band data
thermal images
SAR images
title Decision Fusion at Pixel Level of Multi-Band Data for Land Cover Classification—A Review
title_full Decision Fusion at Pixel Level of Multi-Band Data for Land Cover Classification—A Review
title_fullStr Decision Fusion at Pixel Level of Multi-Band Data for Land Cover Classification—A Review
title_full_unstemmed Decision Fusion at Pixel Level of Multi-Band Data for Land Cover Classification—A Review
title_short Decision Fusion at Pixel Level of Multi-Band Data for Land Cover Classification—A Review
title_sort decision fusion at pixel level of multi band data for land cover classification a review
topic land cover classification
decision fusion
pixel-level
multi-band data
thermal images
SAR images
url https://www.mdpi.com/2313-433X/10/1/15
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