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Published 20 hours ago • verified publisher icon SimonRit

Implementation of variance reconstruction

Open jannisdickmann opened this issue 3 years ago • 2 comments

Implementation of variance reconstruction with a new FFTVarianceRampImageFilter and modifications to FFTRampImageFilter and FDKWeightProjectionFilter.

jannisdickmann avatar Mar 01 '21 13:03 jannisdickmann

Thanks Jannis. I would like to add a test and I can try to implement a functional one. If I want to reconstruct the variance, should I compute variance projections, then FDKWeightProjectionFilter (VarianceMode) -> FFTVarianceRampImageFilter -> FDKBackProjectionImageFilter ?

SimonRit avatar Mar 02 '21 13:03 SimonRit

Hi Simon. Yes that's correct. In the FFTVarianceRampImageFilter we should probably also test for the correct calculation of finterp, which should be 0.46 without Hann filter, and I can provide expected values for other Hann values. The HannY option is currently not considered and I was just printing an error message, which probably is not ideal.

jannisdickmann avatar Mar 02 '21 16:03 jannisdickmann