optical point spread function
Effect of the Illuminating Point Spread Function and Roughness on the Speckle Correlation Field
... statistical optical properties of fully developed speckle ...any point of the observation plane is large enough [1] [8] [9] [10] [11] ...the optical statistical proper- ties of the speckle fields at ...
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Point Spread Function Estimation for a Terahertz Imaging System
... ideal point source, but it is, in practical terms, as close as we could get to it; attemps to use metal balls of smaller sizes in our experiments have resulted in response signals too weak for any reliable ...
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Studies on three dimensional point spread function energy distribution of biological microscopic imaging system
... radial spread degree of energy is reduced; and the bright area in the central area of 3D-PSF spreads towards the left and right sides in the axial direction, the energy of 3D-PSF also spreads along both sides of ...
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A Review on Point Spread Function Estimation TechniquesRitesh Pawar, Dr. Maitreyee Dutta
... blur function can be assumed which give the results whoes does not match with the real imaging model of the optical devices which reduce the restoration ...blur function at the same ...blur ...
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Point Spread Functions of Defocused Optical Systems with Hanning Amplitude Filters
... the optical system with generalized Hanning amplitude filter, suppresses fully or partially the optical ...the optical filter ...the point spread function so that first minima is ...
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Optical Performance Analysis Using a Point Spread Function and Modulation Transfer Function for W-Band Pmmw Imaging System Based on Quasi Optics Focused Array of Dielectric Rod Waveguide Antenna
... So far the most practical structure is a dielectric rod antenna due to their low cross polarization, relatively high gain and potential for a very dense packaging. We developed modified tapered dielectric rod waveguide ...
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Colour depth from defocus incorporating experimental point spread function measurements
... Images of a checkerboard pattern perpendicular to the camera's optical aXIs were obtained using the Basler A631 fc colour camera and the 24mm Sigma photographic lens for six equally spac[r] ...
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Educational Alternatives, Volume 12, 2014
... the point spread function (PSF) and the optical transfer function (OTF), which represents the Fourier transform of PSF, are the main characteristics of linear system, consisting of ...
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Estimation of the Microscope Point Spread Function by Using an Adaptive Image Deblurring Method
... the optical properties of biological images. The optical microscope is often used to study and analyze the structures of biological cells and ...the point spread function (PSF) of the ...
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Measurement of the point spread function of a noisy imaging system
... averaged point spread function (PSF) estimation of an image acquisition system is important for many computer vision applications, including edge detection and depth from ...edge spread ...
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Image Restoration without Information of Blur Operator using Blind Deconvolution
... 2D function g(x, y) where x and y are spatial coordinates and the amplitude of function at any pair of coordinates is called intensity or gray level of that image at that ...is spread over several ...
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Point Spread Function and Modulation Transfer Function Engineering
... the optical transfer function will lead to spatial frequencies of the scene that will not be transferred to the image - a complete loss of information at that spatial ...
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Image Restoration Using Lucy Richardson Algorithm For X-Ray Images
... effectively when no information about the distortion (blurring and noise) is known. The algorithm restores the image and the point-spread function (PSF) simultaneously. The accelerated, damped ...
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Evaluation of spatial dependence of point spread function-based PET reconstruction using a traceable point-like 22Na source
... the point source in air might have caused PSF over-correction of resolution because of un- acceptable noise properties, which is a clinically unrealistic ...detector-response function was determined by ...
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Vortex knots in light
... within optical wave ...space optical modes with the same frequency, so are temporally ...space optical fields; only a few special cases are known (the knots and links studied here [9, 10], which have ...
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Information Content in Inverse Source with Symmetry and Support Priors
... Abstract—This paper illustrates how inverse source problems are affected by certain symmetry and support priors concerning the source space. The study is developed for a prototype configuration where the field radiated by ...
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Blind deconvolution with an application to speckle imaging
... 7.5 The object error, the point spread function error, the convolution error and the total error achieved by the conjugate gradient algorithm for different number of frames at 1000 itera[r] ...
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Beamforming Scheme for 2D Displacement Estimation in Ultrasound Imaging
... The apodization matrix is calculated using (9), that is, the inverse discrete Fourier transform of the desired pressure profile given in (33). This apodization function is shown in Figure 2. The inverse Fourier ...
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Algorithm for MTF estimation by histogram modeling of an edge
... Figures 5 and 6 demonstrate how the histograms of a sharp and a smooth edge must differ. The gray levels increase in the histogram from left to right. This also represents a monotonic spatial motion across the edge in ...
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Point-spread function reconstructed PET images of sub-centimeter lesions are not quantitative
... as function of iterations (we stopped at 6 iterations 21 subsets, which is more than commonly ...a function of lesion size (SUV curve) up to 12 mm ...
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