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PSENet: Progressive Self-Enhancement Network for Unsupervised Extreme-Light Image Enhancement

2022-10-03 04:51:51
Hue Nguyen, Diep Tran, Khoi Nguyen, Rang Nguyen

Abstract

The extremes of lighting (e.g. too much or too little light) usually cause many troubles for machine and human vision. Many recent works have mainly focused on under-exposure cases where images are often captured in low-light conditions (e.g. nighttime) and achieved promising results for enhancing the quality of images. However, they are inferior to handling images under over-exposure. To mitigate this limitation, we propose a novel unsupervised enhancement framework which is robust against various lighting conditions while does not require any well-exposed images to serve as the ground-truths. Our main concept is to construct pseudo-ground-truth images synthesized from multiple source images that simulate all potential exposure scenarios to train the enhancement network. Our extensive experiments show that the proposed approach consistently outperforms the current state-of-the-art unsupervised counterparts in several public datasets in terms of both quantitative metrics and qualitative results. Our code is available at this https URL.

Abstract (translated)

URL

https://arxiv.org/abs/2210.00712

PDF

https://arxiv.org/pdf/2210.00712.pdf


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