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Optimization of minimum volume constrained hyperspectral image unmixing on CPU–GPU heterogeneous platform

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Abstract

Hyperspectral unmixing is essential for efficient hyperspectral image processing. Nonnegative matrix factorization based on minimum volume constraint (MVC-NMF) is one of the most widely used methods for unsupervised unmixing for hyperspectral image without the pure-pixel assumption. But the model of MVC-NMF is unstable, and the traditional solution based on projected gradient algorithm (PG-MVC-NMF) converges slowly with low accuracy. In this paper, a novel parallel method is proposed for minimum volume constrained hyperspectral image unmixing on CPU–GPU Heterogeneous Platform. First, a optimized unmixing model of minimum logarithmic volume regularized NMF is introduced and solved based on the second-order approximation of function and alternating direction method of multipliers (SO-MVC-NMF). Then, the parallel algorithm for optimized MVC-NMF (PO-MVC-NMF) is proposed based on the CPU–GPU heterogeneous platform, taking advantage of the parallel processing capabilities of GPUs and logic control abilities of CPUs. Experimental results based on both simulated and real hyperspectral images indicate that the proposed algorithm is more accurate and robust than the traditional PG-MVC-NMF, and the total speedup of PO-MVC-NMF compared to PG-MVC-NMF is over 50 times.

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Acknowledgments

Financial support for this work, provided by the National Natural Science Foundation of China (Grants Nos. 61471199, 61101194), the Jiangsu Provincial Natural Science Foundation of China (Grant No. BK2011701), the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20113219120024), the Project of China Geological Survey (Grant No. 1212011120227), the Jiangsu Province Six Top Talents project of China (Grant No. WLW-011), and the CAST Innovation Foundation (Grant No. CAST201227), is gratefully acknowledged.

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Authors and Affiliations

  1. School of Computer Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China

    Zebin Wu, Jianjun Liu, Shun Ye, Le Sun & Zhihui Wei

  2. Lianyungang Research Institute of NUST, Lianyungang, 222006, China

    Zebin Wu

  3. Jiangsu Key Lab of Spectral Imaging and Intelligent Sensing, Nanjing, 210094, China

    Zebin Wu & Zhihui Wei

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  1. Zebin Wu
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Correspondence to Zebin Wu.

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Wu, Z., Liu, J., Ye, S. et al. Optimization of minimum volume constrained hyperspectral image unmixing on CPU–GPU heterogeneous platform. J Real-Time Image Proc 15, 265–277 (2018). https://doi.org/10.1007/s11554-014-0479-x

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  • DOI: https://doi.org/10.1007/s11554-014-0479-x

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