6thGrid-Net: Unified Remote Sensing Image Dehazing Based on Color Restoration and Edge-Preserving
Runci Bai, Kui Jiang, Xiang Chen, Chen Wu, Dianjie Lu, Guijuan Zhang, Zhuoran Zheng

TL;DR
6th Grid-Net is an efficient, unified framework for remote sensing image dehazing that preserves edges and color fidelity while being suitable for resource-constrained devices.
Contribution
It introduces a novel six-dimensional fusion tensor and a manifold-adaptive sampling mechanism for improved image restoration.
Findings
Achieves state-of-the-art results on benchmark datasets.
Effectively preserves edges and colors in degraded images.
Reduces model size with dynamic quantization.
Abstract
Remote sensing images are frequently degraded by adverse weather conditions, particularly clouds and haze, which severely impair downstream applications. Existing restoration methods typically rely on computationally heavy architectures or sequential pipelines (e.g., detail enhancement followed by color rendition) that suffer from mutual interference and artifact accumulation. Furthermore, recent unified grid-based approaches utilize fixed, isotropic interpolation kernels, neglecting the intrinsic low-dimensional manifold of natural images and inevitably causing edge blur. To address these limitations, we propose 6th Grid-Net, a highly efficient and unified remote sensing image restoration framework tailored for resource-constrained edge devices. Specifically, we construct a novel six-dimensional fusion tensor that seamlessly integrates the color rendition capabilities of 3D LUTs with…
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