Robust Depth Super-Resolution via Adaptive Diffusion Sampling

• URL: http://arxiv.org/abs/2602.09510v1
• Date: Tue, 10 Feb 2026 08:10:02 GMT
• Title: Robust Depth Super-Resolution via Adaptive Diffusion Sampling
• Authors: Kun Wang, Yun Zhu, Pan Zhou, Na Zhao,
• Abstract summary: AdaDS robustly recovers high-resolution depth maps from arbitrarily degraded inputs.<n>AdaDS capitalizes on the contraction property of Gaussian smoothing.<n>Experiments on real-world and synthetic benchmarks demonstrate AdaDS's superior zero-shot generalization.
• Score: 32.09035309959689
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: We propose AdaDS, a generalizable framework for depth super-resolution that robustly recovers high-resolution depth maps from arbitrarily degraded low-resolution inputs. Unlike conventional approaches that directly regress depth values and often exhibit artifacts under severe or unknown degradation, AdaDS capitalizes on the contraction property of Gaussian smoothing: as noise accumulates in the forward process, distributional discrepancies between degraded inputs and their pristine high-quality counterparts diminish, ultimately converging to isotropic Gaussian prior. Leveraging this, AdaDS adaptively selects a starting timestep in the reverse diffusion trajectory based on estimated refinement uncertainty, and subsequently injects tailored noise to position the intermediate sample within the high-probability region of the target posterior distribution. This strategy ensures inherent robustness, enabling generative prior of a pre-trained diffusion model to dominate recovery even when upstream estimations are imperfect. Extensive experiments on real-world and synthetic benchmarks demonstrate AdaDS's superior zero-shot generalization and resilience to diverse degradation patterns compared to state-of-the-art methods.

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