SIGNALAI·May 26, 2026, 4:00 AMSignal65Medium term

Physen-Noise2Noise: Physics-Guided Self-Supervised Defocus Deblurring with Bias Correction under Low-Light Conditions

Source: arXiv cs.LG

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Physen-Noise2Noise: Physics-Guided Self-Supervised Defocus Deblurring with Bias Correction under Low-Light Conditions

arXiv:2605.24590v1 Announce Type: cross Abstract: Low-light, long-exposure defocus deblurring remains a challenging problem due to the simultaneous presence of severe blur and complex biased noise. Existing methods typically rely on simplified noise assumptions, which limits their effectiveness under realistic imaging conditions. In this work, we propose Physen-Noise2Noise, a self-supervised deblurring framework guided by the physical model of defocus imaging, which leverages noisy multi-frame observations without requiring clean reference images. Unlike conventional Noise2Noise-based approach

Why this matters
Why now

The proliferation of AI and advanced imaging capabilities is driving the need for more robust and reliable image processing techniques, especially under challenging conditions, pushing continued research in this domain.

Why it’s important

Improving image quality in low-light and blurred conditions without requiring clean reference images has broad implications for computer vision applications, enhancing reliability and reducing data annotation costs.

What changes

This self-supervised method allows for more effective deblurring and noise correction in real-world scenarios, potentially expanding the operational envelope for various imaging systems.

Winners
  • · Computer Vision Researchers
  • · Surveillance and Security Industry
  • · Autonomous Vehicle Developers
  • · Computational Photography Companies
Losers
  • · Companies relying on traditional, less robust deblurring techniques
Second-order effects
Direct

Enhanced performance of AI models that rely on visual input under difficult lighting conditions.

Second

Reduced sensor hardware requirements or extension of existing sensor lifespans in certain applications due to software improvements.

Third

New applications become feasible in environments previously considered too challenging for automated visual analysis.

Editorial confidence: 85 / 100 · Structural impact: 40 / 100
Original report

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Read at arXiv cs.LG
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