Land Cover Classification From VHR Optical Remote Sensing Images by Feature Ensemble Deep Learning Network

The collapse of buildings caused by earthquakes can lead to a large loss of life and property. Rapid assessment of building damage with remote sensing image data can support emergency rescues. However, current studies indicate that only a limited sample set can usually be obtained from remote sensing images immediately following an earthquake. Consequently, the difficulty in preparing sufficient training samples constrains the generalization of the model in the identification of earthquake-damaged buildings. To produce a deep learning network model with strong generalization, this study adjusted four Convolutional Neural Network (CNN) models for extracting damaged building information and compared their performance. A sample dataset of damaged buildings was constructed by using multiple disaster images retrieved from the xBD dataset. Using satellite and aerial remote sensing data obtained after the 2008 Wenchuan earthquake, we examined the geographic and data transferability of the deep network model pre-trained on the xBD dataset. The result shows that the network model pre-trained with samples generated from multiple disaster remote sensing images can extract accurately collapsed building information from satellite remote sensing data. Among the adjusted CNN models tested in the study, the adjusted DenseNet121 was the most robust. Transfer learning solved the problem of poor adaptability of the network model to remote sensing images acquired by different platforms and could identify disaster-damaged buildings properly. These results provide a solution to the rapid extraction of earthquake-damaged building information based on a deep learning network model.

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A Plane Target Detection Algorithm in Remote Sensing Images based on Deep Learning Network Technology

Journal of Physics Conference Series ◽

10.1088/1742-6596/960/1/012025 ◽

2018 ◽

Vol 960 ◽

pp. 012025

Author(s):

Li Shuxin ◽

Zhang Zhilong ◽

Li Biao

Keyword(s):

Remote Sensing ◽

Deep Learning ◽

Target Detection ◽

Detection Algorithm ◽

Network Technology ◽

Remote Sensing Images ◽

Learning Network ◽

Deep Learning Network

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Remote sensing image recognition based on dual-channel deep learning network

Multimedia Tools and Applications ◽

10.1007/s11042-021-11079-5 ◽

2021 ◽

Author(s):

Xianping Cui ◽

Cui Zou ◽

Zesong Wang

Keyword(s):

Remote Sensing ◽

Deep Learning ◽

Image Recognition ◽

Remote Sensing Image ◽

Learning Network ◽

Dual Channel ◽

Deep Learning Network

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Self-Attention in Reconstruction Bias U-Net for Semantic Segmentation of Building Rooftops in Optical Remote Sensing Images

Remote Sensing ◽

10.3390/rs13132524 ◽

2021 ◽

Vol 13 (13) ◽

pp. 2524

Author(s):

Ziyi Chen ◽

Dilong Li ◽

Wentao Fan ◽

Haiyan Guan ◽

Cheng Wang ◽

...

Keyword(s):

Remote Sensing ◽

Deep Learning ◽

Semantic Segmentation ◽

Extraction Methods ◽

The Self ◽

Optical Remote Sensing ◽

Building Extraction ◽

Learning Models ◽

Remote Sensing Images ◽

Segmentation Methods

Deep learning models have brought great breakthroughs in building extraction from high-resolution optical remote-sensing images. Among recent research, the self-attention module has called up a storm in many fields, including building extraction. However, most current deep learning models loading with the self-attention module still lose sight of the reconstruction bias’s effectiveness. Through tipping the balance between the abilities of encoding and decoding, i.e., making the decoding network be much more complex than the encoding network, the semantic segmentation ability will be reinforced. To remedy the research weakness in combing self-attention and reconstruction-bias modules for building extraction, this paper presents a U-Net architecture that combines self-attention and reconstruction-bias modules. In the encoding part, a self-attention module is added to learn the attention weights of the inputs. Through the self-attention module, the network will pay more attention to positions where there may be salient regions. In the decoding part, multiple large convolutional up-sampling operations are used for increasing the reconstruction ability. We test our model on two open available datasets: the WHU and Massachusetts Building datasets. We achieve IoU scores of 89.39% and 73.49% for the WHU and Massachusetts Building datasets, respectively. Compared with several recently famous semantic segmentation methods and representative building extraction methods, our method’s results are satisfactory.

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CPS-Det: An Anchor-Free Based Rotation Detector for Ship Detection

Remote Sensing ◽

10.3390/rs13112208 ◽

2021 ◽

Vol 13 (11) ◽

pp. 2208

Author(s):

Yi Yang ◽

Zongxu Pan ◽

Yuxin Hu ◽

Chibiao Ding

Keyword(s):

Remote Sensing ◽

Deep Learning ◽

Positive Sample ◽

Feature Points ◽

Annotation Scheme ◽

Ship Detection ◽

Learning Network ◽

Public Dataset ◽

Deep Learning Network ◽

Speed And Accuracy

Ship detection is a significant and challenging task in remote sensing. At present, due to the faster speed and higher accuracy, the deep learning method has been widely applied in the field of ship detection. In ship detection, targets usually have the characteristics of arbitrary-oriented property and large aspect ratio. In order to take full advantage of these features to improve speed and accuracy on the base of deep learning methods, this article proposes an anchor-free method, which is referred as CPS-Det, on ship detection using rotatable bounding box. The main improvements of CPS-Det as well as the contributions of this article are as follows. First, an anchor-free based deep learning network was used to improve speed with fewer parameters. Second, an annotation method of oblique rectangular frame is proposed, which solves the problem that periodic angle and bounded coordinates in conjunction with the regression calculation can lead to the problem of loss anomalies. For the annotation scheme proposed in this paper, a scheme for calculating Angle Loss is proposed, which makes the loss function of angle near the boundary value more accurate and greatly improves the accuracy of angle prediction. Third, the centerness calculation of feature points is optimized in this article so that the center weight distribution of each point is suitable for the rotation detection. Finally, a scheme combining centerness and positive sample screening is proposed and its effectiveness in ship detection is proved. Experiments on remote sensing public dataset HRSC2016 show the effectiveness of our approach.

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