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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Sparse Hyperspectral Unmixing Based on Constrained $ ell_{p} - ell_{2}$ Optimization
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Sparse Hyperspectral Unmixing Based on Constrained $ ell_{p} - ell_{2}$ Optimization

机译:基于约束$ ell_ {p}-ell_ {2} $优化的稀疏高光谱分解

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摘要

Linear spectral unmixing is an effective technique to estimate the abundances of materials present in each hyperspectral image pixel. Recently, sparse-regression-based unmixing approaches have been proposed to tackle this problem. Mostly, $ell_{1}$ norm minimization is used to approximate the $ell_{0}$ norm minimization problem in terms of computational complexity. In this letter, we model the hyperspectral unmixing as a constrained sparse $ell_{p} - ell_{2}$$(0 < p < 1)$ optimization problem and propose to solve it via the iteratively reweighted least squares algorithm. Experimental results on a series of simulated data sets and a real hyperspectral image demonstrate that the proposed method can achieve performance improvement over the state-of-the-art $ell_{1} - ell_{2}$ method.
机译:线性光谱分解是一种有效的技术,可以估算每个高光谱图像像素中存在的物质含量。最近,已经提出了基于稀疏回归的分解方法来解决这个问题。通常, $ ell_ {1} $ 范数最小化用于近似 $ ell_ {0} $ 范数最小化问题。在这封信中,我们将高光谱解混建模为受约束的稀疏 $ ell_ {p}-ell_ {2} $ $(0 <1)$ 优化问题,并提出通过迭代加权最小二乘算法解决。在一系列模拟数据集和真实的高光谱图像上的实验结果表明,所提出的方法可以相对于最新的 $ ell_ {1}-ell_ {2} $ 方法。

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