Analysis of laser speckle severity, granularity, and anisotropy using the power spectral density in polar-coordinate representation

Autor:	Sanjeev Solanki, Xinan Liang, Xuewu Xu, Desmond C. Ong
Rok vydání:	2012
Předmět:	Physics business.industry General Engineering Spectral density Speckle noise Atomic and Molecular Physics and Optics Speckle pattern Optics Electronic speckle pattern interferometry Computer vision Spatial frequency Granularity Artificial intelligence Polar coordinate system business Anisotropy
Zdroj:	Optical Engineering. 51:054301
ISSN:	0091-3286
DOI:	10.1117/1.oe.51.5.054301
Popis:	The conventional speckle contrast measures only speckle severity, and is unable to characterize granularity and anisotropy in displayed images, which are easily picked up by human observers. Here, we propose a comprehensive method based on the power spectral density which allows the simultaneous measurement of three components of laser speckle-severity, granularity and anisotropy-as a superior way to evaluate both speckle and speckle reduction techniques.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4e2e2f08dba81080ee9a0bc3c6b2f110 https://doi.org/10.1117/1.oe.51.5.054301 Zobrazit plný text záznamu