Dear all, sorry that I was not able to do this up to now, this week is still a bit problematic due to some deadlines, but I promise to do maximum for it at beginning of the next week.
Best regards, Petr On 10/29/2013 03:54 PM, Kostiantyn Nikiforow wrote: > Dear all, > > Let me revive this old thread. After a few long session with watershed > grain analysis in last few days i have more or less the same set of > questions and doubts as Daria had. Unfortunately information on > watershed options in user giude is still brief and kind of enigmatic > as it has been for a long time. Probably Petr didn't find time to > update the manual. Sorry about this, but i would like to kindly ask > you to explain used algorithm and watershed parameters in Gwyddion. > > Thank you and best regards, > Kostia > > On Tue, May 14, 2013 at 10:10 PM, Petr Klapetek <[email protected] > <mailto:[email protected]>> wrote: > > > Dear all, > > tomorrow I will try to explain the algorithm parameters more in detail > in the user guide, > sorry that I hadn't time for that up to now. > > Best regards, > Petr > > > On Mon, May 13, 2013 at 9:50 PM, D.Yu.Khanukaeva <[email protected] > <mailto:[email protected]>> wrote: > > > Dear colleagues, > > my questions are rather simple and I hope, someone will answer. I > looked through the forum archive and found analogous post about > the meaning of the watershed options. There David recommended > reading manual in reply. I've read manual several times, but > misunderstanding remains. > The only option which is clear for me is the Threshold - it cuts > the noise on the chosen level. > More or less Drop size parameter understandable - the higher its > value, the larger lakes on the image. But it is measured in > percents. What are these percents of? > Variations of Number of steps in Segmentation section also result > in the sizes of the lakes. So I've concluded, that it is the > amount of drops put in each chosen grain. > At last, Number of steps in Grain location section gives the most > unexpected results for me, that indicates my absolute > misunderstanding of its meaning. If the initial drops are located > at every point of the image, why do large unmasked regions appear, > when this parameter is high? If this is the length of each drop > path, the result again is very strange: the drops not always > concentrate in the regions which are obvious extremums of the > image, so, some grains remain unmasked... > > I specially wrote my reasoning in hope somebody at least comments > my words, if nobody has time for detailed explanations. > Thank you! > > Daria Khanukaeva, > Gubkin Russian State University of Oil and Gas, > Department of Higher Mathematics. > > > > ------------------------------------------------------------------------------ > AlienVault Unified Security Management (USM) platform delivers > complete > security visibility with the essential security capabilities. > Easily and > efficiently configure, manage, and operate all of your security > controls > from a single console and one unified framework. Download a free > trial. > http://p.sf.net/sfu/alienvault_d2d > _______________________________________________ > Gwyddion-users mailing list > [email protected] > <mailto:[email protected]> > https://lists.sourceforge.net/lists/listinfo/gwyddion-users > > > > ------------------------------------------------------------------------------ > Android is increasing in popularity, but the open development platform that > developers love is also attractive to malware creators. Download this white > paper to learn more about secure code signing practices that can help keep > Android apps secure. > http://pubads.g.doubleclick.net/gampad/clk?id=65839951&iu=/4140/ostg.clktrk > > > _______________________________________________ > Gwyddion-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/gwyddion-users ------------------------------------------------------------------------------ Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951&iu=/4140/ostg.clktrk _______________________________________________ Gwyddion-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/gwyddion-users
