Physics – Optics
Scientific paper
Feb 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995josaa..12..272s&link_type=abstract
Journal of the Optical Society of America A: Optics, Image Science, and Vision, Volume 12, Issue 2, February 1995, pp.272-283
Physics
Optics
20
Image Restoration, Charge-Coupled Devices, Cameras, Image Reconstruction
Scientific paper
Data acquired with a CCD camera are modeled as an additive Poisson-Gaussian mixture, with the Poisson component representing cumulative counts of object-dependent photoelectrons, object-independent photoelectrons, bias electrons, and thermoelectrons and the Gaussian component representing readout noise. Two methods are examined for compensating for readout noise. One method relies on approximating the Gaussian readout noise by a Poisson noise and then using a modified Richardson-Lucy algorithm to effect the compensation. This method has been used for restoring images acquired with CCD's in the original Wide-Field / Planetary Camera aboard the Hubble Space Telescope. The second method directly uses the expectation-maximization algorithm derived for the Poisson-Gaussian mixture data. This requires the determination of the conditional-mean estimate of the Poisson component of the mixture, which is accomplished by the evaluation of a nonlinear function of the data. The second method requires more computation than the first but is more accurate
Faisal Mohammad
Helstrom Carl W.
Lanterman Aaron D.
Snyder Donald L.
White Richard L.
No associations
LandOfFree
Compensation for readout noise in CCD images does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Compensation for readout noise in CCD images, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compensation for readout noise in CCD images will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1635452