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Cited by 1,195

The DOI matches its Crossref record; 17 of the 17 references it cites were found in a registry or an index.

Transferring Deep Convolutional Neural Networks for the Scene Classification of High-Resolution Remote Sensing Imagery

Open access
Hu, Fan, Xia, Gui-Song, Hu, Jingwen, Zhang, Liangpei·2015·Remote Sensing

Abstract

Learning efficient image representations is at the core of the scene classification task of remote sensing imagery. The existing methods for solving the scene classification task, based on either feature coding approaches with low-level hand-engineered features or unsupervised feature learning, can only generate mid-level image features with limited representative ability, which essentially prevents them from achieving better performance. Recently, the deep convolutional neural networks (CNNs), which are hierarchical architectures trained on large-scale datasets, have shown astounding performance in object recognition and detection. However, it is still not clear how to use these deep convolutional neural networks for high-resolution remote sensing (HRRS) scene classification. In this paper, we investigate how to transfer features from these successfully pre-trained CNNs for HRRS scene classification. We propose two scenarios for generating image features via extracting CNN features from different layers. In the first scenario, the activation vectors extracted from fully-connected layers are regarded as the final image features; in the second scenario, we extract dense features from the last convolutional layer at multiple scales and then encode the dense features into global image features through commonly used feature coding approaches. Extensive experiments on two public scene classification datasets demonstrate that the image features obtained by the two proposed scenarios, even with a simple linear classifier, can result in remarkable performance and improve the state-of-the-art by a significant margin. The results reveal that the features from pre-trained CNNs generalize well to HRRS datasets and are more expressive than the low- and mid-level features. Moreover, we tentatively combine features extracted from different CNN models for better performance.

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Crossref · 10.3390/rs71114680

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Metadata

Authors
Hu, F., Xia, G.-S., Hu, J., & Zhang, L.
Venue
Remote Sensing
Publisher
MDPI AG
Published
2015-11-05
Volume
7
Issue
11
Pages
14680-14707
ISSN
2072-4292 (ISSN-L)
OpenAlex
W2098676252
Cited by
1,195
References
17
FWCI
158.99
Type
journal article
Language
en
Open access
gold

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