NDLI: Attention-Based Pyramid Network for Segmentation and Classification of High-Resolution and Hyperspectral Remote Sensing Images

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Attention-Based Pyramid Network for Segmentation and Classification of High-Resolution and Hyperspectral Remote Sensing Images

Content Provider	MDPI
Author	Xu, Qingsong Yuan, Xin Ouyang, Chaojun Zeng, Yue
Copyright Year	2020
Description	Unlike conventional natural (RGB) images, the inherent large scale and complex structures of remote sensing images pose major challenges such as spatial object distribution diversity and spectral information extraction when existing models are directly applied for image classification. In this study, we develop an attention-based pyramid network for segmentation and classification of remote sensing datasets. Attention mechanisms are used to develop the following modules: (i) a novel and robust attention-based multi-scale fusion method effectively fuses useful spatial or spectral information at different and same scales; ( $ii$ ) a region pyramid attention mechanism using region-based attention addresses the target geometric size diversity in large-scale remote sensing images; and ( $iii$ ) cross-scale attention in our adaptive atrous spatial pyramid pooling network adapts to varied contents in a feature-embedded space. Different forms of feature fusion pyramid frameworks are established by combining these attention-based modules. First, a novel segmentation framework, called the heavy-weight spatial feature fusion pyramid network (FFPNet), is proposed to address the spatial problem of high-resolution remote sensing images. Second, an end-to-end spatial-spectral FFPNet is presented for classifying hyperspectral images. Experiments conducted on ISPRS Vaihingen and ISPRS Potsdam high-resolution datasets demonstrate the competitive segmentation accuracy achieved by the proposed heavy-weight spatial FFPNet. Furthermore, experiments on the Indian Pines and the University of Pavia hyperspectral datasets indicate that the proposed spatial-spectral FFPNet outperforms the current state-of-the-art methods in hyperspectral image classification.
Starting Page	3501
e-ISSN	20724292
DOI	10.3390/rs12213501
Journal	Remote Sensing
Issue Number	21
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2020-10-24
Access Restriction	Open
Subject Keyword	Remote Sensing High-resolution and Hyperspectral Images Spatial Object Distribution Diversity Spectral Information Extraction Attention-based Pyramid Network Heavy-weight Spatial Feature Fusion Pyramid Network (ffpnet) Spatial-spectral Ffpnet
Content Type	Text
Resource Type	Article

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