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Research questionHow can we denoise CCD astronomical images without abundant paired data while preserving physical interpretability?Astronomical CCD images contain stochastic noise that standard calibration does not fully remove. Paired clean and noisy observations are scarce, while denoising models used for scientific measurements must remain consistent with the underlying image-formation process.
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Latest papersRecent research connected to this question, newest first.Denoising the Deep Sky: Physics-Based CCD Noise Formation for Astronomical ImagingThe source addresses CCD noise from photon shot noise, photo-response non-uniformity, dark current, readout effects, cosmic-ray hits, and hot pixels. It uses stacked multi-exposure images as high-signal-to-noise bases and synthesizes noisy counterparts for supervised learning, with evidence from multiband data collected by two ground-based telescopes and photometric and scientific accuracy experiments.research paper · Sep 1, 2026
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