应用科学学报 ›› 2016, Vol. 34 ›› Issue (6): 651-660.doi: 10.3969/j.issn.0255-8297.2016.06.001

• 信号与信息处理 • 上一篇    下一篇

基于有约束CNMF的遥感高光谱多光谱图像融合

刘洋, 徐洪平, 易航, 施清平, 夏伟强, 康健   

  1. 北京宇航系统工程研究所, 北京 100076
  • 收稿日期:2016-05-10 修回日期:2016-06-20 出版日期:2016-11-30 发布日期:2016-11-30
  • 通信作者: 徐洪平,研究员,研究方向:飞行器总体设计、信息融合等,E-mail:xuhp0501@sina.com E-mail:xuhp0501@sina.com

Hyperspectral and Multi-spectral Data Fusion Based on Constraint CNMF

LIU Yang, XU Hong-ping, YI Hang, SHI Qing-ping, XIA Wei-qiang, KANG Jian   

  1. Beijing Institute of Aerospace System Engineering, Beijing 100076, China
  • Received:2016-05-10 Revised:2016-06-20 Online:2016-11-30 Published:2016-11-30

摘要:

针对高光谱图像空间分辨率较低的问题,设计了一种基于光谱解混的高光谱、多光谱图像融合算法(VSC-CNMF). 结合遥感图像的实际物理特性,在混合像元分解时加入端元单形体最小体积约束和丰度稀疏约束,通过光谱退化、空间退化和迭代解混,实现不同图像间端元和丰度的匹配,获得了具有高空间分辨率的融合图像. 仿真实验表明,VSC-CNMF可得到具有更高空间质量和光谱质量的融合图像.

关键词: 最小体积约束, 非负矩阵分解, 图像融合, 高光谱图像, 稀疏约束, 空间分辨率

Abstract:

Hyperspectral images generally have lowspatial resolution due to limitations of the imaging spectrometer. In this paper, VSC-CNMF is designed to produce a fused image from hyperspectral and multi-spectral images. An end-member smallest volume and abundance sparseness constrained NMF (VSC-CNMF) algorithm is proposed based on the physical characteristics of remote sensing images. We match the end-member and abundance of two types of images by spectral and spatial degradations, and get the fused image with high spatial and spectral resolution according to some un-mixing update rules. Simulation results show that fused images with higher spatial and spectral quality can be obtained with VSC-CNMF.

Key words: non-negative matrix factorization, hyperspectral image, sparseness constraint, spatial resolution, minimum volume constraint, image fusion

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