SurroundNet: Towards Effective Low-Light Image Enhancement

• URL: http://arxiv.org/abs/2110.05098v1
• Date: Mon, 11 Oct 2021 09:10:19 GMT
• Title: SurroundNet: Towards Effective Low-Light Image Enhancement
• Authors: Fei Zhou and Xin Sun and Junyu Dong and Haoran Zhao and Xiao Xiang Zhu
• Abstract summary: We present a novel SurroundNet which only involves less than 150$K$ parameters and achieves very competitive performance. The proposed network comprises several Adaptive Retinex Blocks (ARBlock), which can be viewed as a novel extension of Single Scale Retinex in feature space. We also introduce a Low-Exposure Denoiser (LED) to smooth the low-light image before the enhancement.
• Score: 43.99545410176845
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Although Convolution Neural Networks (CNNs) has made substantial progress in the low-light image enhancement task, one critical problem of CNNs is the paradox of model complexity and performance. This paper presents a novel SurroundNet which only involves less than 150$K$ parameters (about 80-98 percent size reduction compared to SOTAs) and achieves very competitive performance. The proposed network comprises several Adaptive Retinex Blocks (ARBlock), which can be viewed as a novel extension of Single Scale Retinex in feature space. The core of our ARBlock is an efficient illumination estimation function called Adaptive Surround Function (ASF). It can be regarded as a general form of surround functions and be implemented by convolution layers. In addition, we also introduce a Low-Exposure Denoiser (LED) to smooth the low-light image before the enhancement. We evaluate the proposed method on the real-world low-light dataset. Experimental results demonstrate that the superiority of our submitted SurroundNet in both performance and network parameters against State-of-the-Art low-light image enhancement methods. Code is available at https: github.com/ouc-ocean-group/SurroundNet.

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