Hello,

I work @ work with 3d scanners (FARO scanners) pointclouds i merge and fix in program named Scene
Files that i can save out from it are:
.pts
.e57
.wrl
.dxf
.xyz
.xyb
.igs
.pts
.ptx
.pod
.fls

Revit where i can then draw walls etc can open up this pointcloud file and i am able to export out from Revit following files types:
.dwg
.dxf
.dgn
.acis(sat)
.dwf
.dwfx
.fbx
.nwc
.gbxml

My problem with those is that those files are not accurate 3D elements (OBJ files).
Added images as samples.
My goal is to find good workflow when working with pointclouds and creating 3d model from those.

Questions:
1. is there a way to load in Pointcloud file directly to Houdini? (formats that i can save out are:
pts
.e57 (E57 Files)
.wrl (VRML Files)
.dxf (DXF Files)
.xyz (XYZ Ascii Files)
.xyb (XYZ Binary Files)
.igs (IGES Files)
.pts (PTS Files)
.ptx (PTX Files)
.pod (Pointools Files)
.fls (SCENE Scan File)
2. If there is no support for pointcloud files is there some sort of option that i can some how turn those files to proper 3D elements whithout starting to model everything from scratch.
I do not need to use Revit as modeling tool. I use revit as reference tool as inside of revit i have pointcloud and i can rotate it around and start drawing walls and floors and windows by following pointcloud.

3. How to fix topology for FBX format model?

try this (free) open 3D point cloud and mesh processing software that's
Open Source Project CloudCompare

https://www.danielgm.net/cc/ [www.danielgm.net]

export from the program above a .fbx or .obj

file formats it can read and export

http://www.cloudcompare.org/doc/wiki/index.php?title=FILE_I/O [www.cloudcompare.org]

see if does a better job then Revit

Yes, it is entirely possible to import point clouds from Lidar or whatever. I can't remember which way it goes but Houdini imports either a .pts and .ply file. But they are basically the same thing you just change the header. That's what I did when I had to get data in from a Faro. Since that time there have been improvements to this workflow. As well you should look into the Houdini/Reality Capture plug-in that I think is out in beta.

I think that Houdini now has a Lidar Sop that natively handles e57 as well as something else…not in front of Houdini at the moment.

As far as free goes, a lot of work can also be done in cloud compare - http://www.cloudcompare.org [www.cloudcompare.org]

From Revit, I would go.fbx and in some rare cases, I have had to use .iges which Houdini handles well. Most of your listed formats can be read into Houdini without issue.

I was able to import pointcloud to Houdini but is there a way to convert pointcloud to OBJ file / pollygon mesh. ?
End goal is to be able to do uv-d and texture model.

Maybe use http://www.meshlab.net/ [www.meshlab.net]
should do everything what you need :-)