this implements bayer pattern demosaicing following the paper
Demosaicing With Directional Filtering and a posteriori Decision Daniele Menon, Stefano Andriani and Giancarlo Calvagno. IEEE Transactions on Image Processing ( Volume: 16, Issue: 1, January 2007) doi: 10.1109/TIP.2006.884928
it has a particularly smooth colour reconstruction but does not work for xtrans colour filter array (cfa) input.
this module does not feature the builtin resize-features as the
demosaic module does, so you probably want an explicit resize
module in the pipeline after it.