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1.中国空间技术研究院 钱学森空间技术实验室,北京 100094
2.北京信息科技大学 仪器科学与光电工程学院,北京 100192
3.北京市遥感信息研究所,北京 100192
[ "辛 蕾(1988-),女,辽宁阜新人,助理研究员,2010年和2013年于北京航空航天大学分别获得学士和硕士学位,现为钱学森空间技术实验室工程师,助理研究员,主要从事压缩感知,智能信息处理及超分辨率方面的研究。E-mail:xinlei@qxslab.cn" ]
收稿日期:2021-05-19,
修回日期:2021-06-28,
纸质出版日期:2021-12-15
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辛蕾,李峰,鲁啸天等.面向光学遥感影像的高效编码与重构[J].光学精密工程,2021,29(12):2956-2963.
XIN Lei,LI Feng,LU Xiao-tian,et al.Efficient coding and reconstruction for optical remote sensing images[J].Optics and Precision Engineering,2021,29(12):2956-2963.
辛蕾,李峰,鲁啸天等.面向光学遥感影像的高效编码与重构[J].光学精密工程,2021,29(12):2956-2963. DOI: 10.37188/OPE.20212912.2956.
XIN Lei,LI Feng,LU Xiao-tian,et al.Efficient coding and reconstruction for optical remote sensing images[J].Optics and Precision Engineering,2021,29(12):2956-2963. DOI: 10.37188/OPE.20212912.2956.
为了降低大面阵相机所面临的数据采集与传输压力,借鉴压缩感知理论,提出一种光学遥感影像高效编码与重构方法。首先,构建了空域与感知域联合的多域联合感知矩阵,在采样的同时实现压缩,获取多重压缩域信息。然后,面向多域压缩信息,提出一种基于Huber函数的重构方法,实现图像的快速和高保真重构。实验结果证明:本文所提出的光学图像高效编码与重构方法,PSNR和SSIM均优于JPEG压缩方法,针对吉林一号、单一目标红外影像、场景红外影像,PSNR达到40 dB,SSIM优于0.8。本文基于该方法设计了一套高效光学图像编码与重构系统,能够实现星上快速压缩和高保真重构的需求。
Based on the theory of compressed sensing, a method for efficient coding and reconstruction of optical remote sensing images is proposed to reduce the pressure of data acquisition and transmission faced by large area scan cameras. First, a multi-domain perception matrix is constructed combining the spatial and compressed sensing domains. Compression is realized while sampling, and multiple compressed domain information is obtained. Then, for multi-domain compressed information, a reconstruction method based on the Huber function is proposed to rapidly reconstruct high fidelity images. The results of the optical image coding and reconstruction techniques proposed in this paper have higher structural similarity(SSIM) and PSNR compared to JPEG compression methods. Using images of the Jilin-1 satellite, single target and scene infrared images yields a PSNR reaching 40 dB and SSIM exceeding 0.8. Based on these findings, an efficient system for coding and restoring optical images is designed. The proposed system can meet the need for rapid compression and high fidelity reconstruction on the satellite.
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