AEFormer: Zoom Camera Enables Remote Sensing Super-Resolution via Aligned and Enhanced Attention

Author:

Tu Ziming12ORCID,Yang Xiubin1,Tang Xingyu12,Xu Tingting3,He Xi12,Liu Penglin4,Jiang Li4,Fu Zongqiang12

Affiliation:

1. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

2. Daheng College, University of Chinese Academy of Sciences, Beijing 100039, China

3. School of Computer Science and Technology, China University of Mining and Technology, Xuzhou 221116, China

4. Physics Department, Changchun University of Science and Technology, Changchun 130022, China

Abstract

Reference-based super-resolution (RefSR) has achieved remarkable progress and shows promising potential applications in the field of remote sensing. However, previous studies heavily rely on existing and high-resolution reference image (Ref), which is hard to obtain in remote sensing practice. To address this issue, a novel structure based on a zoom camera structure (ZCS) together with a novel RefSR network, namely AEFormer, is proposed. The proposed ZCS provides a more accessible way to obtain valid Ref than traditional fixed-length camera imaging or external datasets. The physics-enabled network, AEFormer, is proposed to super-resolve low-resolution images (LR). With reasonably aligned and enhanced attention, AEFormer alleviates the misalignment problem, which is challenging yet common in RefSR tasks. Herein, it contributes to maximizing the utilization of spatial information across the whole image and better fusion between Ref and LR. Extensive experimental results on benchmark dataset RRSSRD and real-world prototype data both verify the effectiveness of the proposed method. Hopefully, ZCS and AEFormer can enlighten a new model for future remote sensing imagery super-resolution.

Funder

Key Research and Development Program of Jilin Province

Natural Science Foundation of Jilin Province

National Natural Science Foundation of China

Entrepreneurship Team Project of Zhuhai City

Publisher

MDPI AG

Subject

General Earth and Planetary Sciences

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