Deconvolution! It holds out the promise of turning noisy, out-of-focus images into tableaux of sparkling delight! And saving my PhD!

Still haven't worked out if Tschumperlé-Deriche vector-valued regularization PDEs (or, probably, its scalar, ie monochrome, relatives) are any use.

PLAN OF ACTION: get or build implementations of Richardson-Lucy, positive iterative, expectation maximisation and maximum entropy filters, and run them over some sample data.

Back on the trail of MEM ...

PP-TSVD looks like magic.