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Learning to See in the Dark

2018-05-04CVPR 2018Code Available1· sign in to hype

Chen Chen, Qifeng Chen, Jia Xu, Vladlen Koltun

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Abstract

Imaging in low light is challenging due to low photon count and low SNR. Short-exposure images suffer from noise, while long exposure can induce blur and is often impractical. A variety of denoising, deblurring, and enhancement techniques have been proposed, but their effectiveness is limited in extreme conditions, such as video-rate imaging at night. To support the development of learning-based pipelines for low-light image processing, we introduce a dataset of raw short-exposure low-light images, with corresponding long-exposure reference images. Using the presented dataset, we develop a pipeline for processing low-light images, based on end-to-end training of a fully-convolutional network. The network operates directly on raw sensor data and replaces much of the traditional image processing pipeline, which tends to perform poorly on such data. We report promising results on the new dataset, analyze factors that affect performance, and highlight opportunities for future work. The results are shown in the supplementary video at https://youtu.be/qWKUFK7MWvg

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Benchmark Results

DatasetModelMetricClaimedVerifiedStatus
ELD SonyA7S2 x100Paired Data(SID)PSNR (Raw)44.47Unverified
ELD SonyA7S2 x200Paired Data(SID)PSNR (Raw)41.97Unverified
SID SonyA7S2 x250Paired Data (SID)PSNR (Raw)39.6Unverified
SID x100SID (paired real data)PSNR (Raw)42.06Unverified
SID x300Paired Data(SID)PSNR (Raw)36.85Unverified

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