Abstract
We have previously shown1 that multivariate moment-generating functions provide a facile method for analyzing the influence of stochastic amplifying and scattering mechanisms on the transfer of signal and noise through multistage imaging systems. The method is general in that it can be applied to stationary as well as nonstationary processes. In the special case of stationary processes, relationships between the input and output noise power spectra (NPS) can be derived. For the case of photon-limited inputs, one can also readily express the detective quantum efficiency. We have extended application of the method to five cases of amplifying and scattering mechanisms in which the parameters are themselves stochastic variables and in which random variables are correlated between stages. Expressions for the NPS and DQE are derived for each case, and a physical example drawn from the study of radio-graphic intensifying screens is given. In several of these examples, previously published theoretical results have been shown to follow as special cases of these more general results.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
