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Article

A Novel LiDAR Data Classification Algorithm Combined CapsNet with ResNet

1
The Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang, Harbin University of Science and Technology, Harbin 150080, China
2
Department of Computer Science, Chubu University, Aichi 487-8501, Japan
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(4), 1151; https://doi.org/10.3390/s20041151
Received: 24 January 2020 / Revised: 12 February 2020 / Accepted: 18 February 2020 / Published: 19 February 2020
(This article belongs to the Special Issue Environmental Sensors and Their Applications)
LiDAR data contain feature information such as the height and shape of the ground target and play an important role for land classification. The effect of convolutional neural network (CNN) for feature extraction on LiDAR data is very significant, however CNN cannot resolve the spatial relationship of features adequately. The capsule network (CapsNet) can identify the spatial variations of features and is widely used in supervised learning. In this article, the CapsNet is combined with the residual network (ResNet) to design a deep network-ResCapNet for improving the accuracy of LiDAR classification. The capsule network represents the features by vectors, which can account for the direction of the features and the relative position between the features. Therefore, more detailed feature information can be extracted. ResNet protects the integrity of information by passing input information to the output directly, which can solve the problem of network degradation caused by information loss in the traditional CNN propagation process to a certain extent. Two different LiDAR data sets and several classic machine learning algorithms are used for comparative experiments. The experimental results show that ResCapNet proposed in this article `improve the performance of LiDAR classification. View Full-Text
Keywords: image classification; deep learning; convolutional neural network (CNN); residual network (ResNet); capsule network (CapsNet) image classification; deep learning; convolutional neural network (CNN); residual network (ResNet); capsule network (CapsNet)
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MDPI and ACS Style

Wang, A.; Wang, M.; Wu, H.; Jiang, K.; Iwahori, Y. A Novel LiDAR Data Classification Algorithm Combined CapsNet with ResNet. Sensors 2020, 20, 1151. https://doi.org/10.3390/s20041151

AMA Style

Wang A, Wang M, Wu H, Jiang K, Iwahori Y. A Novel LiDAR Data Classification Algorithm Combined CapsNet with ResNet. Sensors. 2020; 20(4):1151. https://doi.org/10.3390/s20041151

Chicago/Turabian Style

Wang, Aili, Minhui Wang, Haibin Wu, Kaiyuan Jiang, and Yuji Iwahori. 2020. "A Novel LiDAR Data Classification Algorithm Combined CapsNet with ResNet" Sensors 20, no. 4: 1151. https://doi.org/10.3390/s20041151

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