YANG Aiwei, WANG Huake, HOU Xingsong. From Global to Local: A Dual-Attention Fusion Dehazing Network[J]. 2023, 57(7): 191-200.
DOI:
YANG Aiwei, WANG Huake, HOU Xingsong. From Global to Local: A Dual-Attention Fusion Dehazing Network[J]. 2023, 57(7): 191-200.DOI: 10.7652/xjtuxb202307018.
From Global to Local: A Dual-Attention Fusion Dehazing Network
In terms of the problem that the existing dehazing methods based on the convolution neural network employs attention only from a single perspective
causing difficulties in generating a clear image with vivid details and the propensity to give rise to color distortion
this paper proposes a global and local attention fusion image dehazing network is proposed
in order to obtain a dehazing image with normal definition and no color distortion. The input haze image is first divided into two parts in the channel dimension by using the channel attention. One part is sent into the channel pixel attention channel to extract local features
and the other part is sent into the Transformer channel to learn global features. Then
the pixel attention is used to fuse the features learned by the two channels
and the above modules are combined as basic units into a multi-level U-shaped dehazing network
residual connection is added to alleviate the loss of detail information caused by upper and lower sampling
and finally
a Transformer module is added at the bottom of the network to learn global information. The effectiveness of the method proposed is tested on several publicly available dehazing image data sets including RESIDE SOTS Indoor and RESIDE SOTS Outdoor. The results show that compared with the classical dehazing method
the image generated by the method proposed is more detailed and has the least color distortion. On the RESIDE SOTS Outdoor data set
the PSNR is 1.16dB higher than that of the classical FFA-Net
and 3.68dB higher than that of the GridDehazeNet. The global and local attention fusion method proposed in this paper can effectively remove haze and improve the contrast and clarity of the image; the designed multi-level U-shaped dehazing network and residual connection structure can alleviate the loss of details and improve the dehazing effect
so that clear images are obtained.
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references
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