Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/4820
Título: Parallel hyperspectral unmixing on GPUs
Autor: Nascimento, José M. P.
Bioucas-Dias, José M.
Alves, José M. Rodriguez
Silva, Vítor
Plaza, António
Palavras-chave: Graphics Processing Unit (GPU)
Parallel Methods
Sparse Unmixing by Variable Splitting and Augmented Lagrangian (SUNSAL)
Unsupervised Hyperspectral Unmixing, Vertex Component Analysis (VCA)
Data: Mar-2014
Editora: IEEE - Institute of Electrical and Electronics Engineers Inc.
Resumo: This letter presents a new parallel method for hyperspectral unmixing composed by the efficient combination of two popular methods: vertex component analysis (VCA) and sparse unmixing by variable splitting and augmented Lagrangian (SUNSAL). First, VCA extracts the endmember signatures, and then, SUNSAL is used to estimate the abundance fractions. Both techniques are highly parallelizable, which significantly reduces the computing time. A design for the commodity graphics processing units of the two methods is presented and evaluated. Experimental results obtained for simulated and real hyperspectral data sets reveal speedups up to 100 times, which grants real-time response required by many remotely sensed hyperspectral applications.
Peer review: yes
URI: http://hdl.handle.net/10400.21/4820
DOI: 10.1109/LGRS.2013.2274328
ISSN: 1545-598X
1558-0571
Versão do Editor: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6605525
Aparece nas colecções:ISEL - Eng. Elect. Tel. Comp. - Artigos

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