On Fri, Jun 12, 2015 at 09:28:27AM +0200, Nicolas Delorme wrote: > The masking procedure do not work since some of the pyramids are in contact.
The waterhsed should fare better. There are actually two completely different watershed algorithms, one denoted ‚Mark by Segmentation‘ but I should still to improve it to make it more useful to topographical data. > One solution would be to derivate the topographic image (but I don't > know if gwyddion can do it) and to count the obtained maxima and > look at their relative height... > Is there a way to obtain a derivative of an image with Gwyddion? Functions in Presentation → Gradient calculate the classical directional gradients (Sobel, Prewitt), the corresponding functions in Presentation → Edge Detection calculate the total gradient. Note these functions create presentations as the output was not intended for further analysis, but you still extract them... Function Integral Transforms → Local Slope transforms the image to the total derviative using the simple symmetrical derivative operator. Regards, Yeti ------------------------------------------------------------------------------ _______________________________________________ Gwyddion-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/gwyddion-users
