Journal ArticleDOI
Some Effects of Temporal Coherence on the First Order Statistics of Speckle
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In this article, the first order probability density function of the intensity in a speckle pattern is considered as a function of spectral bandwidth of the incident light, and it is shown that the sta...Abstract:
Moments and the first order probability density function of the intensity in a speckle pattern are considered as a function of the spectral bandwidth of the incident light. It is shown that the sta...read more
Citations
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Journal ArticleDOI
Hadamard speckle reduction for millimeter wave imaging
TL;DR: In this paper, a free-space vector network analyzer was used to detect speckles in the W-band of the Hadamard mask and achieved 50% speckle reduction.
Journal ArticleDOI
Contrast dependence of white light image speckles on surface roughness
K. Nakagawa,T. Asakura +1 more
TL;DR: In this paper, an experiment was made for the effect of object surface roughness on the statistical properties of white light image speckles, and the experimental results indicate that the contrast of white-light image specks shows an interesting relation with the surface roughs which has not been found in the past studies.
Journal ArticleDOI
Average Contrast of White-light Image Speckle Patterns
K. Nakagawa,Toshimitsu Asakura +1 more
TL;DR: In this paper, an extensive experimental study on the average contrast of speckle patterns produced by white light at the image plane is reported, which is determined by the complicated relationship between the spatial coherence of illuminating light, the point spread of an imaging system and the roughness properties of the objects.
Journal ArticleDOI
Functional imaging in photorefractive tissue speckle holography
TL;DR: In this article, a motility metric using time autocorrelation was developed to create a 3D motility map of tissue in depth-gated holographic optical coherence imaging.
References
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Book
Principles of Optics
TL;DR: In this paper, the authors discuss various topics about optics, such as geometrical theories, image forming instruments, and optics of metals and crystals, including interference, interferometers, and diffraction.
Principles of Optics
TL;DR: In this article, the authors discuss various topics about optics, such as geometrical theories, image forming instruments, and optics of metals and crystals, including interference, interferometers, and diffraction.
Journal ArticleDOI
On a moment theorem for complex Gaussian processes
TL;DR: A general theorem is provided for the moments of a complex Gaussian video process that states that an n th order central product moment is zero if n is odd and is equal to a sum of products of covariances when n is even.
Journal ArticleDOI
Fluctuations of Photon Beams: The Distribution of the Photo-Electrons
TL;DR: In this article, the probability distribution p(n, T) of the number of counts n from a photoelectric detector illuminated by coherent light for a time T is studied, by associating photons stochastically with Gaussian random waves.
Journal ArticleDOI
Some effects of target-induced scintillation on optical radar performance
TL;DR: In this paper, the statistical performance of pulsed optical radars that use energy detection is considered, and the physical factors influencing the number of observed correlation cells for the cases of partial and total interception of the transmitted beam are examined.