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arXiv 1506.01596cs.CV
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多层结构NMF在高光谱图像光谱分解中的应用

Multilayer Structured NMF for Spectral Unmixing of Hyperspectral Images

Tarbiat Modares University(塔比亚特·莫达雷斯大学)

Roozbeh Rajabi, Hassan Ghassemian

摘要:

高光谱数据分析中的挑战之一是混合像素的存在。混合像素是高光谱传感器空间分辨率低的结果。光谱解混方法将混合像元分解成一组端元和丰度分数。由于丰度分数值的非负性约束,基于NMF的方法非常适合这个问题。本文在线性混合框架下,利用多层NMF方法改进了高光谱数据混合光谱分解的NMF方法。本文对光谱特征和丰度分数矩阵进行了稀疏约束。所提出的算法进行评估,使用合成和真实数据集的光谱角和丰度角距离。实验结果表明,该算法优于其他先前提出的方法。

英文摘要:

One of the challenges in hyperspectral data analysis is the presence of mixed pixels. Mixed pixels are the result of low spatial resolution of hyperspectral sensors. Spectral unmixing methods decompose a mixed pixel into a set of endmembers and abundance fractions. Due to nonnegativity constraint on abundance fraction values, NMF based methods are well suited to this problem. In this paper multilayer NMF has been used to improve the results of NMF methods for spectral unmixing of hyperspectral data under the linear mixing framework. Sparseness constraint on both spectral signatures and abundance fractions matrices are used in this paper. Evaluation of the proposed algorithm is done using synthetic and real datasets in terms of spectral angle and abundance angle distances. Results show that the proposed algorithm outperforms other previously proposed methods.

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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