Search found 18 matches

by hjulenissen
2012-10-06T12:36:27-07:00
Forum: Digital Image Processing
Topic: Why EWA/circular scaling operators?
Replies: 36
Views: 113934

Re: Why EWA/circular scaling operators?

The frequency content supported by a uniform grid may not be isotropic, but the frequency content of "nature" is not supported by a uniform grid. I dont follow you on that one. We cant know what the frequency content of "nature" (any given scene) will be before hand. What we do ...
by hjulenissen
2012-10-06T08:33:10-07:00
Forum: Digital Image Processing
Topic: Why EWA/circular scaling operators?
Replies: 36
Views: 113934

Re: Why EWA/circular scaling operators?

Thank you for a lenghty reply. I am still sceptical though. Moire (and dither?) seems like image flaws to me that should be be fixed by targeted image processing rather than generating an infinite list of named scaling functions with complicated differences that may fix one or the other image flaw a...
by hjulenissen
2012-10-05T03:57:24-07:00
Forum: Digital Image Processing
Topic: Why EWA/circular scaling operators?
Replies: 36
Views: 113934

Why EWA/circular scaling operators?

I do understand that non-separable scaling is a superset of separable scaling, so that non-separable should have the potential to be as good, or better than separable scaling. But what is the benefit of a radially symmetric function vs a "carthesian" (tensor?)? It would seem that the sampl...