Smear correction of highly variable, frame-Transfer CCD images with application to polarimetry

IGLESIAS, FRANCISCO A.; FELLER, ALEX; NAGARAJU, KRISHNAPPA

Applied Optics

OSA - The Optical Society

Año: 2015 vol. 54 p. 5970 - 5975

1559-128X

Image smear, produced by the shutterless operation of frame-Transfer CCD detectors, can be detrimental for many imaging applications. Existing algorithms used to numerically remove smear do not contemplate cases where intensity levels change considerably between consecutive frame exposures. In this report, we reformulate the smearing model to include specific variations of the sensor illumination. The corresponding desmearing expression and its noise properties are also presented and demonstrated in the context of fast imaging polarimetry.