arXiv:2511.20045cs.CV2025-11

提出新方法提升行星遥感图像盲超分,不依赖真实标签也能精准重建地貌。

History-Augmented Contrastive Learning With Soft Mixture of Experts for Blind Super-Resolution of Planetary Remote Sensing Images

  • 用对比学习生成合理模糊核,避免随机采样导致的偏差。
  • 利用历史模型状态作为负样本,稳定训练过程并防止过拟合。
  • 动态调节能适应不同行星地形,适合科研中数据稀缺场景。

行星遥感中的盲超分辨率(BSR)是一个高度病态的逆问题,面临未知退化模式且完全缺乏真实标签监督。现有无监督方法常因优化不稳定和分布偏移而表现不佳,依赖贪婪策略或通用先验,难以保留独特形态语义。为此,我们提出历史增强对比混合专家(HAC-MoE),一种无需外部模糊核先验的无监督框架,将核估计与图像重建解耦。核心创新包括:(1) 对比核采样机制,通过相似性约束缓解随机高斯采样的分布偏移,生成合理核先验;(2) 历史增强对比学习策略,利用历史模型状态作为负自先验,理论证明该机制可使特征空间具备强凸性,稳定无监督优化轨迹并防止过拟合;(3) 形态感知软混合专家(MA-MoE)估计器,动态调节谱-空特征以自适应重建多样行星地貌。为支持严谨评估,我们构建了包含多种地质特征的基准数据集Ceres-50,基于真实退化模拟。大量实验表明,HAC-MoE在重建质量与核估计精度上均达当前最优,为数据稀疏的外星环境科学观测提供有效解决方案。

原文摘要 · Abstract (English)

Blind Super-Resolution (BSR) in planetary remote sensing constitutes a highly ill-posed inverse problem, characterized by unknown degradation patterns and a complete absence of ground-truth supervision. Existing unsupervised approaches often struggle with optimization instability and distribution shifts, relying on greedy strategies or generic priors that fail to preserve distinct morphological semantics. To address these challenges, we propose History-Augmented Contrastive Mixture of Experts (HAC-MoE), a novel unsupervised framework that decouples kernel estimation from image reconstruction without external kernel priors. The framework is founded on three key innovations: (1) A Contrastive Kernel Sampling mechanism that mitigates the distribution bias inherent in random Gaussian sampling, ensuring the generation of plausible kernel priors via similarity constraints; (2) A History-Augmented Contrastive Learning strategy that leverages historical model states as negative self-priors. We provide a theoretical analysis demonstrating that this mechanism induces strong convexity in the feature space, thereby stabilizing the unsupervised optimization trajectory and preventing overfitting; and (3) A Morphology-Aware Soft Mixture-of-Experts (MA-MoE) estimator that dynamically modulates spectral-spatial features to adaptively reconstruct diverse planetary topographies. To facilitate rigorous evaluation, we introduce Ceres-50, a benchmark dataset encapsulating diverse geological features under realistic degradation simulations. Extensive experiments demonstrate that HAC-MoE achieves state-of-the-art performance in reconstruction quality and kernel estimation accuracy, offering a solution for scientific observation in data-sparse extraterrestrial environments.

图像超分无监督学习行星遥感混合专家

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