I've finished the first draft of my re-write up.
The DropBox link:
https://www.dropbox.com/s/fxsjvi20qr...l2021.pdf?dl=0
Comments/ feedback welcome.
Summary:
A good choice of "plastic bag" as a flat diffusion filter works well with the FireCapture "Flat" - which is then applied to each video frame. Stacking in AS3! completes the process.