Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/3616
Título: Parallel implementation of vertex component analysis for hyperspectral endmember extraction
Autor: Alves, José M. Rodriguez
Nascimento, José M. P.
Bioucas-Dias, José M.
Silva, Vítor
Plaza, António
Palavras-chave: Hyperspectral Unmixing
Endmember Extraction
Vertex Component Analysis
Graphics Processing Unit
Parallel Methods
Data: Jul-2012
Editora: IEEE
Citação: ALVES, José M. Rodrigues; NASCIMENTO, José M. P.; BIOUCAS-DIAS, José M.; SILVA, Vítor; PLAZA, António - Parallel implementation of vertex component analysis for hyperspectral endmember extraction. Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International. ISSN 2153-6996. (2012), p. 4078-4081.
Resumo: Vertex component analysis (VCA) has become a very popular and useful tool to linear unmix large hyperspectral datasets without the use of any a priori knowledge of the constituent spectra. Although VCA is fast method, many hyperspectral imagery applications require a response in real time or near-real time. This paper proposes two different optimizations for accelerating the computational performance of VCA: the first one focus a parallel implementation based on graphics computing units (GPUs) to alleviate the VCA computational burden; The second one is focused on the development of a strategy to remove a large proportion of mixed pixels that play no effect on the VCA functioning. Experiments are conducted using simulated and real hyperspectral datasets. These results reveal considerable acceleration factors, which satisfies the real-time constraints given by the data acquisition rate.
Descrição: International Conference with Peer Review 2012 IEEE International Conference in Geoscience and Remote Sensing Symposium (IGARSS), 22-27 July 2012, Munich, Germany
Peer review: yes
URI: http://hdl.handle.net/10400.21/3616
ISBN: 978-1-4673-1158-8
ISSN: 2153-6996
Versão do Editor: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6350513&tag=1
Aparece nas colecções:ISEL - Eng. Elect. Tel. Comp. - Comunicações

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