Hi Yeti, thank you, hope i got it now :-).
Regards Lena -----Ursprüngliche Nachricht----- Von: David Nečas (Yeti) [mailto:[email protected]] Gesendet: Dienstag, 19. Juni 2012 09:53 An: Gwyddion use discussion Betreff: Re: [Gwyddion-users] Filtering in roughness and waviness profile On Tue, Jun 19, 2012 at 09:23:14AM +0200, Mandl, Magdalena wrote: > in the Fourier domain (FFT, filtering, inverse FFT) what kind of > filtering is used? There should be two different filters used, one > highpass filter for the roughness and a lowpass filter for the > waviness, which seperates the profiles. As I wrote, a simple splitting by frequency is used: anything above "fc" goes to roughness, anything below goes to waviness. So the filters are Heaviside functions at "fc" in frequency domain, if you wish. Regards, Yeti ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Gwyddion-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/gwyddion-users ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Gwyddion-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/gwyddion-users
