Showing papers on "Ordered subset expectation maximization published in 1992"
01 Nov 1992
TL;DR: An approach to temporally filter x-ray image sequences acquired through fluoroscopy systems relies on a joint estimation of the signal and the displacement field through a maximum likelihood approach to facilitate a more tractable solution.
Abstract: Clinical x-ray image sequences acquired through fluoroscopy systems may be corrupted by quantum mottle--a Poisson-distributed, signal-dependent noise that arises with a controlled x- ray dosage reduction in an attempt to lower the exposure to the patient and the medical staff. In this paper, an approach to temporally filter this sequence is presented. It relies on a joint estimation of the signal and the displacement field through a maximum likelihood approach. Implementation is done via a modified EM algorithm to facilitate a more tractable solution.© (1992) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
6 citations