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LRDNet: A lightweight and efficient network with refined dual attention decorder for real-time semantic segmentation

Zhuang, Mingxi and Zhong, Xunyu and Gu, Dongbing and Feng, Liying and Zhong, Xungao and Hu, Huosheng (2021) 'LRDNet: A lightweight and efficient network with refined dual attention decorder for real-time semantic segmentation.' Neurocomputing, 459. 349 - 360. ISSN 0925-2312

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Most of the current popular semantic segmentation convolutional networks are focus on accuracy and require large amount of computation, which is using complex models. In order to realize real-time performance in practical applications, such as embedded systems and mobile devices, lightweight semantic segmentation has become a new need, where the network model should keep good accuracy in very limited computing budget. In this paper, we propose a lightweight network with the refined dual attention decorder (termed LRDNet) for better balance between computational speed and segmentation accuracy. In the encoding part of LRDNet, we offer an asymmetric module based on the residual network for lightweight and efficiency. In this module, a combination of decomposition convolution and deep convolution is used to improve the efficiency of feature extraction. In the decoding part of LRDNet, we use a refined dual attention mechanism to reduce the complexity of the entire network. Our network attained precise real-time segmentation results on Cityscapes, CamVid datasets. Without additional processing and pretraining, the LRDNet model achieves 70.1 Mean IoU in the Cityscapes test set. With a parameter value below 0.66 M, it can be up to 77 FPS.

Item Type: Article
Uncontrolled Keywords: Lightweight semantic segmentation, Encoder-decoder, Residual network, Dual attention
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Elements
Date Deposited: 19 Jul 2021 07:58
Last Modified: 19 Jul 2021 07:58

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