Sentence examples for mean speckle pattern from inspiring English sources

The systematic and random errors of a mean speckle pattern displacement of a rigid body motion calculated by using the OSDCT and the digital speckle displacement measurement technique are compared.

The expected variation in contrast with mean gray levels the mean of the quantized speckle pattern recorded by a CCD in this case is given by the red circles whose positions were calculated using Eq. (9) with C0 from the original unquantized speckle pattern and μ ′ values chosen based on quantized speckle patterns at different intensity, in close agreement with the simulation.

Then Eq. (22) was used to correct the contrast values of the low intensity measurements with I m ′ equal to the mean intensity at how illumination (ND = 1) and I c ′ equal to the mean intensity of the speckle pattern at high intensity (ND = 0.3).

The influence of the mean intensity of the speckle pattern on the contrast comes from the quantization of the intensity, which is digitized with limited bit depth.

The mean intensity of the speckle pattern was approximately five times brighter when using the ND = 0.3 NDF compared to the ND = 1 NDF.

It follows a paper published in this journal, which presented the theory and experimental results of measurement of an object in-plane and normal rotations by means of the theory of speckle pattern decorrelation.

I max / μ was calculated from the maximum intensity and the mean intensity of the simulated unquantized speckle pattern, which gave a result of 23.3.

The contrast values were then corrected according to Eq. (10) with I c′ equal to infinity, and the error figure was recalculated: Finally to examine the four analytic models of the contrast as a function of mean intensity, all four types of speckle pattern were synthesized and analyzed.

The mean intensity of each orthogonal mode will depend on the speckle pattern's coherence area A c at the fiber plane and on the mode's profile.

The theoretical models for the relationship between the contrast and mean intensity presented in this paper are based on the statistical properties of the dynamic laser speckle pattern, which may become inaccurate when it is applied to the areas containing a limited number of speckles.

Equation (2) for discrete intensities, that is gray levels, becomes where µ′ is the mean gray level of the quantized intensity and P(I′) is the PDF of the quantized speckle pattern.