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Laser speckle decorrelation time-based platelet function testing i…
- https://www.nature.com/articles/s41598-019-52953-5#:~:text=We%20introduce%20a%20novel%20evaluation%20method%20of%20assessing,chip%20provides%20a%20quantitative%20measure%20of%20platelet%20aggregation.
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OSA | Decorrelation functions in laser speckle photography
- https://www.osapublishing.org/abstract.cfm?URI=josaa-3-7-1023
- The recording and filtering processes of speckle photography are analyzed in detail using statistical optics. We show that the Fourier transforms of the autocorrelation and cross-correlation functions of speckle fields result, respectively, in the diffraction halo function and the Young fringe pattern enveloped by the halo function. A generalized decorrelation factor, …
Decorrelation functions in laser speckle photography
- https://opg.optica.org/josaa/abstract.cfm?uri=josaa-3-7-1023
- A generalized decorrelation factor, defined as the ratio of the Weiner spectra of the cross-correlation and autocorrelation functions, is introduced to explain the degradation of Young’s fringes. It is shown that this factor’s magnitude controls the fringe contrast, whereas its phase may distort the fringe shape.
Decorrelation functions in laser speckle photography
- https://www.semanticscholar.org/paper/Decorrelation-functions-in-laser-speckle-Li-Chiang/a1932b7d7384a07aab880d4f70e45f7dbd2b671e
- A generalized decorrelation factor, defined as the ratio of the Weiner spectra of the cross-correlation and autocorrelation functions, is introduced to explain the degradation of Young’s fringes. It is shown that this factor’s magnitude controls the fringe contrast, whereas its phase may distort the fringe shape.
Laser speckle decorrelation time-based platelet function …
- https://www.nature.com/articles/s41598-019-52953-5
- The decorrelation time is calculated between two consecutive images from the time series of speckle pattern images, which were taken as the blood moved through the microchannel. To calculate the...
Decorrelation functions in laser speckle photography
- https://ui.adsabs.harvard.edu/abs/1986JOSAA...3.1023L/abstract
- adshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A
Laser speckle decorrelation in NDT - ScienceDirect
- https://www.sciencedirect.com/science/article/pii/S0143816600000579
- The phenomenon of laser speckle decorrelation, which represents the actual noise in speckle interferometric methods, was numerically analyzed in order to validate a practical field of application. The sensitivity of speckle decorrelation to local deformation was evaluated when simple occlusion patterns were positioned at the plane of the lens aperture.
Laser speckle decorrelation time-based platelet function …
- https://pubmed.ncbi.nlm.nih.gov/31712610/
- We introduce a novel evaluation method of assessing platelet function with laser speckle contrast imaging. The speckle decorrelation time (SDT) of the blood flowing through a microfluidic channel chip provides a quantitative measure of platelet aggregation. We compared SDTs of whole blood and platelet-poor blood, i.e., whole blood stripped of ...
Decorrelation of Laser Speckle Patterns for Crack-Tip …
- https://link.springer.com/chapter/10.1007/978-1-4684-5772-8_224
- The uses of laser speckle photography are widespread in mechanics and metrology [1] [2]. Most, if not all, of the applications of laser speckle involve the comparison of two correlated speckle patterns of a given field before and after some perturbation to the system has occurred.
Speckle Decorrelation: Observed, Explained, and Tackled
- https://link.springer.com/chapter/10.1007/978-3-642-57323-1_2
- Abstract. It is commonly known that speckle decorrelation limits the possibility to measure large deformations by electronic speckle pattern interferometry (ESPI). We present here a method to lift this limitation and show that ESPI can now be used to measure large deformations, even in a hostile environment. An experimental result is shown that clearly demonstrates the problem …
Laser speckle contrast imaging - Wikipedia
- https://en.wikipedia.org/wiki/Laser_speckle_contrast_imaging
- Laser speckle contrast imaging which can also be called laser speckle imaging is an imaging modality based on the analysis of the blurring effect of the speckle pattern. The operation of LSCI is having a wide-field illumination of a rough surface through a coherent light source. Then using photodetectors such as CCD camera or CMOS sensors imaging the resulting laser speckle …
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