On Wed, Aug 20, 2008 at 08:36:31AM +0200, [EMAIL PROTECTED] wrote: > More important than a > high-order polynomial fit of the whole image is a offset / first order fit > line by line. But to avoid the influence of high features / steps in this > levelling, a mask is necessary.
IMO Path Level offers a nice solution for this case. Instead of selecting areas to exclude, you select lines along which you think the image should be flat. Adding masking to line-levelling methods is in principle also possible, except that it is sometimes hard to define what they exaclty should do in the presence of a mask (that can for instance cover whole rows). > What exactly does "median linecorrection" do? Instead of shifting the rows to match average heights (that are sensitive to occasional high and low values) it matches the median values that are much more stable. Yeti ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Gwyddion-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/gwyddion-users
