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华北电力大学控制与计算机工程学院,北京 102206
Received:30 September 2020,
Revised:2021-05-14,
Published:25 October 2022
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周登文,李文斌,李金新等.一种轻量级的多尺度通道注意图像超分辨率重建网络[J].电子学报,2022,50(10):2336-2346.
ZHOU Deng-wen,LI Wen-bin,LI Jin-xin,et al.Image Super-Resolution Reconstruction Based on Lightweight Multi-Scale Channel Attention Network[J].ACTA ELECTRONICA SINICA,2022,50(10):2336-2346.
周登文,李文斌,李金新等.一种轻量级的多尺度通道注意图像超分辨率重建网络[J].电子学报,2022,50(10):2336-2346. DOI: 10.12263/DZXB.20201089.
ZHOU Deng-wen,LI Wen-bin,LI Jin-xin,et al.Image Super-Resolution Reconstruction Based on Lightweight Multi-Scale Channel Attention Network[J].ACTA ELECTRONICA SINICA,2022,50(10):2336-2346. DOI: 10.12263/DZXB.20201089.
近年来,基于深度卷积神经网络的图像超分辨率技术取得了突出进展,并主导了当前的超分辨率技术的研究.但是,性能的改进,往往以参数量的急剧增加为代价,这限制了超分辨率方法的实际应用.本文设计了一个轻量级单图像超分辨率深度卷积网络,主要贡献包括:提出了一个多尺度的特征融合模块,使用不同感受野的卷积核,提取多种尺度的特征;提出了一个通道搅乱注意力模块,促进特征通道之间的信息流动,并增强特征选择能力;提出了一个全局特征融合连接模块,提高浅层特征的利用率.实验证明,本文方法与当前代表性的方法MSRN(Multi-Scale Residual Network)相比,参数量减少了3/4,重建的高分辨率图像的主观和客观质量均显著更好.
Recently
image super-resolution technology based on deep convolutional neural network has made remarkable achievements and has become popular in the current super-resolution technology. However
superior performance is often at the expense of the large number of parameter amounts
which limits the real-world applications for single image super-resolution. In this paper
a lightweight single image super-resolution deep convolutional network is proposed. The main contributions of this paper are as follows: a multi-scale feature fusion block is proposed to extract multiple features via convolution kernels with different receptive fields; the channel shuffle attention mechanism we designed promotes the flow of the information across feature channels
which enhances the ability of feature selection; a global feature fusion connection is proposed to improve the feature utilization. Extensive experiments demonstrate that the parameter amounts of our method reduced by 3/4 compared with the current state-of-the-art MSRN method
while subjective visual and objective quality of the reconstructed high-resolution image are perform significantly better.
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