Spatial-Spectral Adaptive Fidelity and Noise Prior Reduction Guided Hyperspectral Image Denoising

TL;DR

This paper introduces a hyperspectral image denoising framework that adaptively balances data fidelity and noise priors, effectively removing mixed noise while preserving spectral and spatial structures.

Contribution

It proposes a novel adaptive fidelity and noise prior reduction method with an efficient optimization algorithm for improved hyperspectral image denoising.

Findings

Achieves superior denoising performance on simulated and real datasets.

Effectively handles various noise types with competitive computational efficiency.

Accurately preserves spectral low-rank structure and local smoothness.

Abstract

The core challenge of hyperspectral image denoising is striking the right balance between data fidelity and noise prior modeling. Most existing methods place too much emphasis on the intrinsic priors of the image while overlooking diverse noise assumptions and the dynamic trade-off between fidelity and priors. To address these issues, we propose a denoising framework that integrates noise prior reduction and a spatial-spectral adaptive fidelity term. This framework considers comprehensive noise priors with fewer parameters and introduces an adaptive weight tensor to dynamically balance the fidelity and prior regularization terms. Within this framework, we further develop a fast and robust pixel-wise model combined with the representative coefficient total variation regularizer to accurately remove mixed noise in HSIs. The proposed method not only efficiently handles various types of noise but also accurately captures the spectral low-rank structure and local smoothness of HSIs. An efficient optimization algorithm based on the alternating direction method of multipliers is designed to ensure stable and fast convergence. Extensive experiments on simulated and real-world datasets demonstrate that the proposed model achieves superior denoising performance while maintaining competitive computational efficiency.