Dynamic laser speckle angiography achieved by eigen-decomposition filtering.
Sign Up to like & getrecommendations! Published in 2017 at "Journal of biophotonics"
DOI: 10.1002/jbio.201600237
Abstract: A new approach is proposed for statistically analysis of laser speckle signals emerged from a living biological tissue based on eigen-decomposition to separate the dynamic speckle signals due to moving blood cells from the static… read more here.
Keywords: laser speckle; speckle; tissue; eigen decomposition ... See more keywords
Measurements of blood flow and blood concentration change using laser speckle in fiber illumination and its application to estimation of stress condition
Sign Up to like & getrecommendations! Published in 2017 at "Optical Review"
DOI: 10.1007/s10043-016-0287-6
Abstract: Speckle imaging method is useful for monitoring of blood flow in living bodies. We have proposed so far the method for simultaneous imaging of blood flow and blood concentration change using laser speckle patterns at… read more here.
Keywords: blood flow; concentration change; blood concentration; speckle ... See more keywords
A New Method of Creating High-Temperature Speckle Patterns and Its Application in the Determination of the High-Temperature Mechanical Properties of Metals
Sign Up to like & getrecommendations! Published in 2018 at "Experimental Techniques"
DOI: 10.1007/s40799-018-0256-z
Abstract: Speckle techniques, such as DIC (Digital Image Correlation) and DSP (Digital Speckle Photography), are frequently used to determine the high-temperature mechanical properties of materials. Speckle techniques require the creation of a random speckle pattern on… read more here.
Keywords: temperature; creating high; speckle; high temperature ... See more keywords
Full-field displacement measurement of corneoscleral shells by combining multi-camera speckle interferometry with 3D shape reconstruction.
Sign Up to like & getrecommendations! Published in 2020 at "Journal of the mechanical behavior of biomedical materials"
DOI: 10.1016/j.jmbbm.2019.103560
Abstract: Changes in the biomechanical properties of the connective tissue of the eye occur with age and underlie the development of several ocular diseases, such as glaucoma, myopia, and keratoconus. The biomechanical dynamics of ocular connective… read more here.
Keywords: shape reconstruction; shape; full field; speckle ... See more keywords
Application of optical flow algorithms to laser speckle imaging.
Sign Up to like & getrecommendations! Published in 2019 at "Microvascular research"
DOI: 10.1016/j.mvr.2018.11.001
Abstract: Since of its introduction in 1980s, laser speckle imaging has become a powerful tool in flow imaging. Its high performance and low cost made it one of the preferable imaging methods. Initially, speckle contrast measurements… read more here.
Keywords: speckle; flow algorithms; laser speckle; speckle imaging ... See more keywords
Speckle noise removal using a two-step weighted robust regression
Sign Up to like & getrecommendations! Published in 2019 at "Optics Communications"
DOI: 10.1016/j.optcom.2019.07.027
Abstract: Abstract The speckle usually degrades the signal quality for coherent detection or imaging. In this paper, under the single-image constraint, we propose a two-step weighted robust regression method for speckle removal, where the first step… read more here.
Keywords: robust regression; removal; weighted robust; step ... See more keywords
A novel method for repeatedly generating speckle patterns used in digital image correlation
Sign Up to like & getrecommendations! Published in 2018 at "Optics and Lasers in Engineering"
DOI: 10.1016/j.optlaseng.2017.09.012
Abstract: Abstract Speckle patterns play a key role in Digital Image Correlation (DIC) measurement, and generating an optimal speckle pattern has been the goal for decades now. The usual method of generating a speckle pattern is… read more here.
Keywords: generating speckle; speckle; method; speckle patterns ... See more keywords
Motion correction of laser speckle imaging of blood flow by simultaneous imaging of tissue structure and non-rigid registration
Sign Up to like & getrecommendations! Published in 2021 at "Optics and Lasers in Engineering"
DOI: 10.1016/j.optlaseng.2020.106526
Abstract: Abstract Laser speckle contrast imaging (LSCI) has been widely used for mapping blood flow. LSCI is well known to be highly sensitive to movement artifacts. Previous studies attempted to register the global misalignment by using… read more here.
Keywords: blood flow; motion; speckle; laser speckle ... See more keywords
Wavelength-dependent speckle multiplexing for imaging through opacity
Sign Up to like & getrecommendations! Published in 2021 at "Optics and Lasers in Engineering"
DOI: 10.1016/j.optlaseng.2021.106567
Abstract: Abstract Memory-effect-based speckle-correlated imaging through opacity has been exploited widely in recent years. Generally, spatially incoherent light sources are required to provide effective illumination that can eliminate the interference noise. Here, the wavelength-dependent speckle multiplexing… read more here.
Keywords: imaging opacity; speckle multiplexing; dependent speckle; wavelength dependent ... See more keywords
Illumination dependency in dynamic laser speckle analysis
Sign Up to like & getrecommendations! Published in 2020 at "Optics and Laser Technology"
DOI: 10.1016/j.optlastec.2020.106221
Abstract: Abstract We analyse how the frequency bands influence the independence of speckle index values from the level of illumination in a dynamic laser speckle analysis. Specifically, we study how the temporal speckle deviation index is… read more here.
Keywords: illumination; speckle analysis; speckle; laser speckle ... See more keywords
Laser-light speckle formation for deflection-shape identification using digital image correlation
Sign Up to like & getrecommendations! Published in 2021 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2021.107899
Abstract: Abstract The application of a speckle pattern to the surface of a structure is usually required for Digital Image Correlation (DIC)-based displacement identification. A speckle pattern generally requires the modification (e.g., painting) of the structure’s… read more here.
Keywords: surface; laser light; digital image; laser ... See more keywords