期刊
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
卷 14, 期 -, 页码 426-439出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSTARS.2020.3043521
关键词
High frequency; Image reconstruction; Transforms; Spatial resolution; Filtering theory; Convolution; Image fusion; Convolution sparse representation (SR); image fusion; multiscale decomposition; multispectral (MS) image; panchromatic (PAN) image
类别
资金
- Natural Science Foundation of China [61901246, U1736122]
- China Postdoctoral Science Foundation [2019TQ0190, 2019M662432]
- Open Fund of Key Laboratory of Intelligent Perception and Image Understanding of Ministry of Education, Xidian University [IPIU2019008]
- Natural Science Foundation for Distinguished Young Scholars of Shandong Province [JQ201718]
- StateKey Program of NationalNatural Science of China [61836009]
A novel image fusion method based on multiscale convolution sparse decomposition (MCSD) is proposed in this article, which efficiently approximates the spatial and spectral information in images. By decomposing and integrating the components of panchromatic and multispectral images, the method performs better in visual and numerical evaluations compared to other methods.
In this article, we proposed a novel image fusion method based on multiscale convolution sparse decomposition (MCSD). A unified framework based on MCSD is first utilized to decompose panchromatic (PAN) image and the spatial component of upsampled low spatial resolution multispectral (LR MS) images, which can produce the corresponding low frequencies and feature maps. By combining convolution sparse decomposition with multiscale analysis, MCSD can efficiently approximate the spatial and spectral information in images. Next, a binary map generated from gradient information is utilized to integrate the low frequencies of LR MS and PAN images. For feature maps, the fusion gain for each pixel is calculated according to the similarity between the local patches from them. Finally, the fused image is reconstructed by the sum of fused low frequency and feature maps. Some experiments are conducted on QuickBird and GeoEye-1 satellite datasets. Compared with other methods, the proposed method performs better in visual and numerical evaluations.
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