arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1207.5451stat.MLphysics.data-anstat.AP
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基于高斯过程的高光谱图像非线性光谱分解

Nonlinear spectral unmixing of hyperspectral images using Gaussian processes

Yoann Altmann, Nicolas Dobigeon, Steve McLaughlin, Jean-Yves Tourneret

摘要:

提出了一种非监督的高光谱图像非线性解混算法。所提出的模型假设,像素反射率的结果从一个非线性函数的丰度矢量与纯光谱成分。我们假设纯成分和非线性函数的光谱特征是未知的。所提出的方法的第一步由贝叶斯估计的丰度向量的所有图像像素和非线性函数的丰度向量的观察。随后使用高斯过程回归估计端元。的解混策略的性能进行了评估与模拟合成和真实数据。

英文摘要:

This paper presents an unsupervised algorithm for nonlinear unmixing of hyperspectral images. The proposed model assumes that the pixel reflectances result from a nonlinear function of the abundance vectors associated with the pure spectral components. We assume that the spectral signatures of the pure components and the nonlinear function are unknown. The first step of the proposed method consists of the Bayesian estimation of the abundance vectors for all the image pixels and the nonlinear function relating the abundance vectors to the observations. The endmembers are subsequently estimated using Gaussian process regression. The performance of the unmixing strategy is evaluated with simulations conducted on synthetic and real data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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