Results 261 to 270 of about 81,544 (300)

Technique for the removal of speckle phase in electronic speckle interferometry

Optics Letters, 1995
It is shown that the speckle nature of electronic speckle pattern interferometry images can be reduced in quasireal time with the use of only three consecutive video images. By use of additive-subtractive phase modulation processing the technique is essentially insensitive to environmental noise, and distortion of fringes does not occur.
B F, Pouet, S, Krishnaswamy
openaire   +2 more sources

Optimizing the parameters for measuring laser speckle and speckle contrast

Applied Optics, 2014
Evaluating the contrast in speckle patterns produced by laser projection displays can facilitate the development of methods to suppress such imperfection. Computer simulations were first conducted to characterize the contrast (C(gs)) of fully developed speckle patterns with spatial factor k and power factor r.
Wei-Feng, Hsu, Min-Chun, Chou
openaire   +2 more sources

Effect of the average number of reference speckles in speckle imaging using off-axis speckle holography

Applied Optics, 2019
The propagation of a coherent beam of light through a random scattering medium results in the generation of a speckle pattern. Although the intensity distribution of the speckle pattern is random in nature, the information of the object hidden behind a scattering medium is scrambled into it.
Abhijit Roy, Reajmina Parvin, Maruthi M. Brundavanam   +2 more
openaire   +2 more sources

Speckle and Dynamic Speckle Phenomena

2008
Antônio Tavares da Costa Júnior, María Fernanda Ruiz Gale, Hector Jorge Rabal, Néstor Gustavo Gaggioli, Elsa Noemí Hogert   +4 more
openaire   +1 more source

Speckle and Dynamic Speckle Phenomena

2018
María Fernanda Ruiz Gale, Elsa Noemí Hogert, Néstor Gustavo Gaggioli, Hector Jorge Rabal, Antônio Tavares da Costa Júnior   +4 more
openaire   +1 more source

Detrimental effects of speckle-pixel size matching in laser speckle contrast imaging

Optics Letters, 2008
Sean Kirkpatrick, Donald D Duncan
exaly  

Some fundamental properties of speckle*

Journal of the Optical Society of America, 1976
J W Goodman
exaly  

Speckle

Optical Engineering, 1986
Henri H. Arsenault, Joseph W. Goodman
openaire   +1 more source

Assessment of speckle-pattern quality in digital image correlation based on gray intensity and speckle morphology

Optics and Lasers in Engineering, 2017
Kyoungsoo Park, Sungsik Yoon
exaly  

Phase-shifting speckle interferometry

Applied Optics, 1985
Katherine Creath
exaly