arXiv:2510.01339cs.CVstat.ML2025-10被引 2

用视频一致性模型实现高清视频修复,修复效果更连贯、效率更高。

LVTINO: LAtent Video consisTency INverse sOlver for High Definition Video Restoration

  • 基于视频一致性模型,实现端到端的高清视频逆问题求解。
  • 在多个视频修复任务中超越现有方法,保持帧间连续性与细节还原。
  • 无需自动微分,仅需少量神经网络计算即可达到最优效果,适合实时应用。

计算成像方法越来越多地依赖强大的生成式扩散模型来解决复杂的图像修复任务。当前最先进的零样本图像逆问题求解器利用蒸馏后的文本到图像潜空间扩散模型(LDMs),在高计算效率下实现了前所未有的精度和视觉质量。然而,将这些进展扩展到高清视频修复仍面临重大挑战:既要恢复精细的空间细节,又要捕捉细微的时间依赖关系。因此,简单地对每一帧单独应用基于图像的LDM先验,常导致时间上不一致的重建结果。我们通过利用近期视频一致性模型(VCMs)的进展,将视频潜空间扩散模型蒸馏为快速生成器,显式建模时间因果性,从而解决该问题。在此基础上,我们提出LVTINO,首个基于VCM先验的零样本或即插即用高清视频修复逆求解器。其条件机制避免了自动微分需求,在仅需少数神经函数评估的情况下,实现了最先进的视频重建质量,同时保证强测量一致性与帧间平滑过渡。在多种视频逆问题上的大量实验表明,相比当前基于帧级图像LDM的方法,LVTINO在感知质量上显著提升,建立了重建保真度与计算效率的新基准。代码已开源于GitHub。

原文摘要 · Abstract (English)

Computational imaging methods increasingly rely on powerful generative diffusion models to tackle challenging image restoration tasks. In particular, state-of-the-art zero-shot image inverse solvers leverage distilled text-to-image latent diffusion models (LDMs) to achieve unprecedented accuracy and perceptual quality with high computational efficiency. However, extending these advances to high-definition video restoration remains a significant challenge, due to the need to recover fine spatial detail while capturing subtle temporal dependencies. Consequently, methods that naively apply image-based LDM priors on a frame-by-frame basis often result in temporally inconsistent reconstructions. We address this challenge by leveraging recent advances in Video Consistency Models (VCMs), which distill video latent diffusion models into fast generators that explicitly capture temporal causality. Building on this foundation, we propose LVTINO, the first zero-shot or plug-and-play inverse solver for high definition video restoration with priors encoded by VCMs. Our conditioning mechanism bypasses the need for automatic differentiation and achieves state-of-the-art video reconstruction quality with only a few neural function evaluations, while ensuring strong measurement consistency and smooth temporal transitions across frames. Extensive experiments on a diverse set of video inverse problems show significant perceptual improvements over current state-of-the-art methods that apply image LDMs frame by frame, establishing a new benchmark in both reconstruction fidelity and computational efficiency. The code is available on GitHub.

视频修复扩散模型VCM高清重建

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