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IEICE TRANSACTIONS on Information

Lightweight and Fast Low-Light Image Enhancement Method Based on PoolFormer

Xin HU, Jinhua WANG, Sunhan XU

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Summary :

Images captured in low-light environments have low visibility and high noise, which will seriously affect subsequent visual tasks such as target detection and face recognition. Therefore, low-light image enhancement is of great significance in obtaining high-quality images and is a challenging problem in computer vision tasks. A low-light enhancement model, LLFormer, based on the Vision Transformer, uses axis-based multi-head self-attention and a cross-layer attention fusion mechanism to reduce the complexity and achieve feature extraction. This algorithm can enhance images well. However, the calculation of the attention mechanism is complex and the number of parameters is large, which limits the application of the model in practice. In response to this problem, a lightweight module, PoolFormer, is used to replace the attention module with spatial pooling, which can increase the parallelism of the network and greatly reduce the number of model parameters. To suppress image noise and improve visual effects, a new loss function is constructed for model optimization. The experiment results show that the proposed method not only reduces the number of parameters by 49%, but also performs better in terms of image detail restoration and noise suppression compared with the baseline model. On the LOL dataset, the PSNR and SSIM were 24.098dB and 0.8575 respectively. On the MIT-Adobe FiveK dataset, the PSNR and SSIM were 27.060dB and 0.9490. The evaluation results on the two datasets are better than the current mainstream low-light enhancement algorithms.

Publication
IEICE TRANSACTIONS on Information Vol.E107-D No.1 pp.157-160
Publication Date
2024/01/01
Publicized
2023/10/05
Online ISSN
1745-1361
DOI
10.1587/transinf.2023EDL8051
Type of Manuscript
LETTER
Category
Image Processing and Video Processing

Authors

Xin HU
  Beijing Union University
Jinhua WANG
  Beijing Union University
Sunhan XU
  Beijing Union University

Keyword