multibeam data Help learning what all i can do with it

[youngblood4211]

I have some multibeam data that im looking for debris with in a lake so I made an XYZ of some things I found and just wanted to learn to play with it in cloud compare.

I added what my current xyz looks like in hypack. but I wanted to see what a mesh would look like and see what all other features I can use.

My main issue is not knowing what all filters would be helpful to use and what values to use in the filters.

With this data set my overall goal is to make the bottom color scale to be sand color and the actual target to be some other scale to make it pop.

Any help will be appreciated I mostly struggle with the terminology bc the bulk of my experience is inside hypack.

I also plan on actually reading through the manual to learn what all I can do as well.

[daniel]

Well, I guess the easiest route is to first convert the 'Z' coordinate to a scalar field (https://www.cloudcompare.org/doc/wiki/i ... )_to_SF(s)).

Then you can simply create a custom color scale with absolute values so as to be able to get a 'sandy' color below a give altitude, and something very different above (see https://www.cloudcompare.org/doc/wiki/i ... es_Manager).

And it might be interesting to actually shift this scalar field so that the threshold depth/altitude is zero and your absolute color scale is based on '0' as the color threshold, so as to be more easily re-used on different clouds. You can shift the scalar field values with https://www.cloudcompare.org/doc/wiki/i ... Arithmetic

[youngblood4211]

What about turning it into a tin model? first as well?

[daniel]

Do you want to separate the ground from the rest first? (you could use the CSF plugin maybe).

And if you just want to convert the cloud to a triangular mesh, then you can use the 'Edit > Mesh > Delaunay 2.5D' methods, but it's very sensitive to noise.

Otherwise, the Poisson Reconstruction plugin is much more robust to noise, but it's harder to tame.