Papers › Learning to See in the Dark
Learning to See in the Dark
Chen Chen, Qifeng Chen, Jia Xu, Vladlen Koltun
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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Code
Syntology Ran 1 of 14 code samples harvested from 5 repositories linked to this paper; 13 have no recorded run. Of those that ran: 1 ran · our draft was wrong.
By repository: community (archive-listed): 14 samples from 5 repositories, 1 ran. The run record, sample by sample. “Ran” means executed on a synthesized input, not that the code is correct or reproduces the paper.
19 repositories listed; official and paper-mentioned ones first.
Repository list and official/mentioned flags are the archive's, frozen 2025-07-28. Reachability, where shown, is from one Syntology probe window (2026-09-16 to 2026-09-18); repositories not probed show nothing. GitHub stars are not tracked.
Code Syntology ran Syntology
14 samples harvested; 1 ran; 0 honoured the contract we drafted; 13 have no recorded run. Read from Syntology's graph 2026-09-24; that is when this build read the record, not when the samples ran.
Licence: 2 of the 14 samples are pointer only, meaning Syntology does not serve that copy's text. This page shows no code text for any sample; each one links to its file in the repository.
Harvested from 5 repositories linked to this paper, official or community; each sample names its own and says which. “Ran” means the sample executed on a synthesized input. It does not mean the output is correct, and nothing here reproduces the paper's results. “Honoured” and “violated” refer to a contract Syntology drafted from the code itself; “our draft was wrong” and “fixture could not drive it” are failures of Syntology's instrument, not of the code.
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Repository labels, per sample. official repository: The archive marks this repository official for the paper. named in the paper: The archive records that the paper mentions this repository; it is not marked official. community (archive-listed): In the archive's code links for this paper, not marked official and not recorded as mentioned in the paper. found in paper text by Syntology: Syntology found this repository in the paper's own text; whether it is the authors' implementation is not asserted. community: Not in the archive's code links for this paper; a community repository Syntology harvested. Samples from a repository marked official are listed first. Licence labels name the repository's licence as recorded at harvest. “Pointer only” means Syntology does not serve that copy's text, for one of four reasons: no licence file was found; the licence was not identified; the licence is recorded as permissive but that copy's record is not marked cleared; or the licence is outside the permissive list Syntology serves text under (MIT, Apache-2.0, BSD and similar). Some licences outside that list permit redistribution, such as WTFPL, and GPL-3.0 under its conditions; they are simply not on the list. Hover a licence label for the reason. File links open the file on GitHub at the default branch, which may have changed since the harvest.
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Tasks
Datasets
Introduced by this paper, per the archive.
Results from the paper archive 2025-07-28
| Task | Dataset | Model | Metric | Value | Rank at snapshot | Leaderboard | Report |
|---|---|---|---|---|---|---|---|
| Image Denoising | ELD SonyA7S2 x100 | Paired Data(SID) | PSNR (Raw) | 44.47 | #7 of 9 | Archive leaderboard | report |
| Image Denoising | ELD SonyA7S2 x100 | Paired Data(SID) | SSIM (Raw) | 0.968 | #7 of 9 | Archive leaderboard | report |
| Image Denoising | ELD SonyA7S2 x200 | Paired Data(SID) | PSNR (Raw) | 41.97 | #7 of 10 | Archive leaderboard | report |
| Image Denoising | ELD SonyA7S2 x200 | Paired Data(SID) | SSIM (Raw) | 0.928 | #7 of 10 | Archive leaderboard | report |
| Image Denoising | SID SonyA7S2 x250 | Paired Data (SID) | PSNR (Raw) | 39.60 | #5 of 10 | Archive leaderboard | report |
| Image Denoising | SID SonyA7S2 x250 | Paired Data (SID) | SSIM (Raw) | 0.938 | #5 of 10 | Archive leaderboard | report |
| Image Denoising | SID x100 | SID (paired real data) | PSNR (Raw) | 42.06 | #5 of 8 | Archive leaderboard | report |
| Image Denoising | SID x100 | SID (paired real data) | SSIM | 0.955 | #5 of 8 | Archive leaderboard | report |
| Image Denoising | SID x300 | Paired Data(SID) | PSNR (Raw) | 36.85 | #4 of 8 | Archive leaderboard | report |
| Image Denoising | SID x300 | Paired Data(SID) | SSIM | 0.923 | #4 of 8 | Archive leaderboard | report |
Ranks are positions in the archive's leaderboards as they stood at the 2025-07-28 snapshot. Results published since then are not among these rows, so a rank here is not a current standing.
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