Utilize este identificador para referenciar este registo: http://hdl.handle.net/10198/9998
Título: A selective phase filter based on speckle decorrelation
Autor: Lopes, H.
Ribeiro, J.E.
Santos, J.
Vaz, M.A.P.
Palavras-chave: Phase filter
speckle decorrelation
Phase-shifting
Speckle interferometry
Data: 2013
Citação: Lopes, H.; Ribeiro, J.E.; Santos, J.; Vaz, M.A.P.(2013) - A selective phase filter based on speckle decorrelation. In 4th International Conference on Integrity, Reliability and Failure – IRF2013. Funchal - Madeira.
Resumo: A new phase filter technique based on the speckle decorrelation analysis is proposed on this paper to remove the noise from the phase maps. The phase maps are extracted from speckle interferometry static measurements using the four phase shifted intensities, with the constant phase step of π/2. The speckle descorrelation points are then selected based on the average phase step of the reference and deformation states phase maps. The recursive average phase filter technique is applied to the phase maps and only the speckle decorrelation points are updated in each iteration, preserving the correct phase information. The results of the present method are compared with the well-known phase filters. It was found that the proposed method presents higher performance, particularly when dealing with phase maps which have low signal-to-noise ratio.
Peer review: yes
URI: http://hdl.handle.net/10198/9998
Aparece nas colecções:DTM - Resumos em Proceedings Não Indexados ao ISI/Scopus

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