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README.md
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Bayesian Enhancement Model (BEM)
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AAAI 2026 β One-to-Many
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π Overview
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BEM samples weights from a variational posterior learned by a Bayesian UNet.
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Each sample produces a distinct enhancement, capturing the ambiguity of the task
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BNN_AAAI
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β Two-Stage BNN β DNN Framework (Fast!)
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The core bottleneck is heavy BNN inference.
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So we introduce a coarse-to-fine pipeline:
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Stage I (BNN): Predict coarse latent results in low-dimensional space
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Stage II (DNN): Refine structural & texture details
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This yields a 22Γ speedup vs. vanilla BNNs (Fig.5 in paper)
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BNN_AAAI
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β Adaptive Prior for Stable Training
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Using EMA-updated parameters as priors accelerates convergence and reduces KL instability (Eq.6)
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BNN_AAAI
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β Two Inference Modes
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BEMRank β Select the best candidate using CLIP-IQA, NIQE, UIQM, or UCIQE
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BEMMC β Average multiple samples for stable, noise-free output
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Both modes outperform deterministic baselines.
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---
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license: mit
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---
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Bayesian Enhancement Model (BEM)
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AAAI 2026 β Bayesian Neural Networks for One-to-Many Mapping in Image Enhancement
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Paper: arxiv:2501.14265
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Github:
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π Overview
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BEM samples weights from a variational posterior learned by a Bayesian UNet.
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Each sample produces a distinct enhancement, capturing the ambiguity of the task
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