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 produces a sequence of estimates converging toward a constrained maximum-likelihood estimate of the intensity distribution of an imaged object. An example is given for restoring images from data acquired with the use of the Hubble Space Telescope.
© 1993 Optical Society of America
Original Manuscript: July 15, 1992
Revised Manuscript: October 21, 1992
Manuscript Accepted: October 2, 1992
Published: May 1, 1993
Donald L. Snyder, Richard L. White, and Abed M. Hammoud, "Image recovery from data acquired with a charge-coupled-device camera," J. Opt. Soc. Am. A 10, 1014-1023 (1993)