Next: About this document Up: Iterative/Recursive Deconvolution with Application Previous: Comparison With Other . The iterative/recursive algorithm at all but the lowest-level recurrence interrupts each iteration of the BID algorithm, defines a new, related deblurring problem, and then executes the algorithm on the related problem. ... The iterative/recursive restoration algorithm will still encounter numerical problems if the noise is severe enough to persist in the lowest recursion level. ...