UBIK - a universal Bayesian imaging toolkit
14:00 - 15:00
Jakob Knollmueller (MPA Garching)
Large Seminar room E.0.11
The abstract problem of recovering signals from data is at the core of any scientific progress. In astrophysics, the signal of interest is the Universe around us. It is varying in space, time and frequency and it is populated by a large variety of phenomena. To capture some of its aspects, large and complex instruments are build. How to combine their information consistently into one picture? UBIK allows to fuse data from multiple instruments within one unifying framework. A joint reconstruction of multiple instruments can provide a deeper picture of the same object, as it becomes far easier to distinguish between the signal and instrumental effects. Underlying to UBIK is variational Bayesian inference, allowing uncertainty quantification for parameters jointly. The first incarnation of UBIK demonstrates the versatility of this approach with a number of examples.