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Efficient super resolution-based detail injection network for multispectral pan-sharpening

delete2025-08-04
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OA
AI
Y
Yaxu Wang
X
Xiaobo Luo *
H
Hongwei Ye
DOI:10.1080/10106049.2025.2537381delete
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摘要

摘要

En 中文
Pan-sharpening is a panchromatic (PAN)-guided super-resolution (SR) process, focused on enhancing spatial resolution of low-resolution multi-spectral (LRMS). Existing SR-based pan-sharpening methods face two critical limitations: (1) lack of unified framework adaptable to both pan-sharpening and single image SR (SISR), and (2) inefficiencies in handling low-frequency feature redundancy in both spatial and frequency domain. Based on these, we model features in both spatial and frequency domain and propose a SR-based detail injection network (SDINet) for pan-sharpening. SDINet designs a global-local spatial extraction block (GSEB) for multi-scale feature extraction in spatial domain, accompanying a Sobel-based gated fusion block (SGFB) to non-linearly suppress low-frequency redundancy. Fourier frequency domain-based spatial detail injection block (FDIB) helps to extract supplement spatial information and to fluently convert SDINet for SISR task through input modification alone. Full-resolution and reduced-resolution experiments demonstrate the advantages of SDINet in both pan-sharpening and SISR tasks.
Keyword:
Convolutional neural network
multispectral pan-sharpening
spatial detail injection
single image super resolution

期刊

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Geocarto International
IF:
3.5
论文数:
2.4K
被引数:
6.9K

机构

J
jinhua electric power design institute co.
学者数:
1
论文数: 1
被引数: 0
C
Chongqing University of Posts and Telecommunications
学者数:
2.5K
论文数: 980
被引数: 3.8K
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