标題: Degradation-Oriented Progressive Learning for Haze-Corrupted Satellite Image Super-Resolution

作者: Qiu, ZH (Qiu, Zhonghang); Yue, LW (Yue, Linwei); Shen, HF (Shen, Huanfeng)

來源出版物: IEEE GEOSCIENCE AND REMOTE SENSING LETTERS 卷: 21 文獻号: 6002905 DOI: 10.1109/LGRS.2024.3352731 Published Date: 2024

摘要: Image super-resolution (SR) enhances the spatial resolution and details of remote sensing images to obtain a better visual quality. However, the existing SR methods rarely consider the imaging degradation factors caused by unfavorable atmospheric conditions, which hinders them from accurately modeling the scale dependencies for the real texture features and results in artifacts in the reconstructed images. In this letter, we propose the degradation-oriented progressive learning SR (DoPSR) framework, which handles the degradation issues posed by the low resolution, together with haze, in remote sensing images. Specifically, DoPSR progressively optimizes the SR estimation for the haze-corrupted input by decomposing the challenging restoration task into feasible subproblems. It begins with two parallel subnetworks for haze component prediction and detail enhancement, respectively, and then generates the preliminary haze removal result. Furthermore, a novel collaborative refinement mechanism is introduced to encourage the refinement of the coarse result by leveraging the extracted degradation component of the former stage as prior information. In particular, a degradation-aware fusion module (DAFM) is designed to integrate the degradation prior through cross-stage feature aggregation. Extensive experimental results demonstrate the superiority of the proposed method, which outperforms competitive methods by 0.3-1.6 dB in the peak signal-to-noise ratio (PSNR) on the synthetic dataset.

作者關鍵詞: Degradation; Image reconstruction; Feature extraction; Remote sensing; Task analysis; Data mining; Collaboration; Degradation prior; haze-corrupted; progressive learning; super-resolution (SR)

地址: [Qiu, Zhonghang; Shen, Huanfeng] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China.

[Yue, Linwei] China Univ Geosci, Sch Geog & Informat Engn, Wuhan 430074, Peoples R China.

通訊作者地址: Shen, HF (通訊作者)，Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China.

電子郵件地址: qiu_zh@whu.edu.cn; yuelw@cug.edu.cn; shenhf@whu.edu.cn

影響因子：4.8