> ===============
> Upsharp sampler
> ===============

> ...

> Future improvements: ...Finally, current research
> suggests that the co-monotonicity enforcing derivative clamping is
> overkill and that the result would be less aliased without a
> noticeable increase in haloing if it only enforced strong boundedness.

More current research suggests that the standard "three times the
difference" rule (Fritsch and Carlson et al) is just about as good as
it gets, so this future improvement won't be.

Nicolas Robidoux
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