1993
DOI: 10.1364/josaa.10.001014
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Image recovery from data acquired with a charge-coupled-device camera

Abstract: A model for data acquired with the use of a charge-coupled-device camera is given and is then used for developing a new iterative method for restoring intensities of objects observed with such a camera. The model includes the effects of point spread, photoconversion noise, readout noise, nonuniform flat-field response, nonuniform spectral response, and extraneous charge carriers resulting from bias, dark current, and both internal and external background radiation. An iterative algorithm is identified that pro… Show more

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Cited by 296 publications
(255 citation statements)
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“…Both in the object box and in the PSF box we use the Richardson-Lucy (RL) algorithm to perform the reconstruction. To briefly formalize the problem we use bold letters to denote N × N arrays, whose pixels Article published by EDP Sciences are indexed by a multi-index n = {n 1 , n 2 }, and we consider the following model of image formation (Snyder et al 1993):…”
Section: Ibd Structure and Limitationsmentioning
confidence: 99%
“…Both in the object box and in the PSF box we use the Richardson-Lucy (RL) algorithm to perform the reconstruction. To briefly formalize the problem we use bold letters to denote N × N arrays, whose pixels Article published by EDP Sciences are indexed by a multi-index n = {n 1 , n 2 }, and we consider the following model of image formation (Snyder et al 1993):…”
Section: Ibd Structure and Limitationsmentioning
confidence: 99%
“…In particular, we use the model described in [91,92] (see also [6,102]) for CCD arrays, in which each pixel is assumed to be the sum of realizations from three random variables • Poisson(β) is a Poisson random variable with parameter (i.e., mean and variance) equal to β. This term represents the number of background photoelectrons, arising from both natural and artificial sources, measured at the i-th pixel of the CCD array.…”
Section: A General Noise Modelmentioning
confidence: 99%
“…While μ and σ 2 may be measured by running separate calibration experiments [6], α may not be equivalent to the gain factor that is typically provided in microscopes and therefore must be estimated from the given data. For this, we devise a simple mechanism to estimate α and (σ 2 − αμ) based on the following identities:…”
Section: Parameters Estimationmentioning
confidence: 99%