Digital BW, The Print

> From: Bob Frost
>
> They do, but as I said using Bicubic simply blurs the bands -
> they are still
> there. Try it yourself, it only takes a few moments.

Yes, it does. What's happening is a form of aliasing. Nearest Neighbor makes
no attempt to bandlimit the data, so the aliasing is horrible. Bicubic does
a reasonable amount of filtering of the high spatial frequencies, but not
enough to eliminate all aliasing. Fortunately, real-world images are rarely
as troublesome as test images constructed from alternating black and white
lines. Such test images are useful for seeing what's going on in various
algorithms, though.

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Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@...