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<sup>1</sup> University of Wisconsin-Madison <sup>2</sup> Snap, Inc<br>
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Capturing high-quality images from only a few detected photons is a fundamental challenge in computational imaging.
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Single-photon avalanche diode (SPAD) sensors promise high-quality imaging in regimes where conventional cameras fail, but raw *quanta frames* contain only sparse, noisy, binary photon detections.
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Recovering a coherent image from a burst of such frames requires handling alignment, denoising, and demosaicing (for color) under noise statistics far outside those assumed by standard restoration pipelines or modern generative models.
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We present an approach that adapts large text-to-image latent diffusion models to the photon-limited domain of quanta burst imaging.
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Our method leverages the structural and semantic priors of internet-scale diffusion models while introducing mechanisms to handle Bernoulli photon statistics.
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By integrating latent-space restoration with burst-level spatio-temporal reasoning, our approach produces reconstructions that are both photometrically faithful and perceptually pleasing, even under high-speed motion.
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We evaluate the method on synthetic benchmarks and new real-world datasets, including the first color SPAD burst dataset and a challenging *Extreme-Deforming (XD)* video benchmark.
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Across all settings, the approach substantially improves perceptual quality over classical and modern learning-based baselines, demonstrating the promise of adapting large generative priors to extreme photon-limited sensing.
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Code at [github.com/Aryan-Garg/gQIR](https://github.com/Aryan-Garg/gQIR).
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<sup>1</sup> University of Wisconsin-Madison <sup>2</sup> Snap, Inc<br>
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## All model weights are available here now!
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Code at [github.com/Aryan-Garg/gQIR](https://github.com/Aryan-Garg/gQIR).
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