Valley wall point cloud mesh

[cini8492]

Hi,

I have several LiDAR scans of a valley wall (steep slope) and I would like to detect geomorphological changes trough time. In order to find both erosion and deposition pattern distribution, I want to convert my reference cloud in a mesh and than use compute point to mesh distance tool. My problem is which type (XY or best fit plane) of Delunay 2.5D triangulation is better to generate my reference mesh.

Thanks all!

[daniel]

If it's terrain data, I guess Z is already the vertical orientation? Then you can stick to the default 'XY plane' mode.

Note that you would get also very interesting results by using the M3C2 distance (plugin) directly on the cloud (see http://www.cloudcompare.org/doc/wiki/in ... 2_(plugin))

[cini8492]

Yes it is a terrain data and Z is the vertical orientation. I will also try with the M3C2 distance for compare the two methods.

Thank you so much for the answer!