A small sample typically works quiet well. You do not want to make this number too big. Sample Number - this is the number of samples it pulls from each mesh to compare to the other meshes. The default ICP parameter parameters allow you to fine tune how one mesh is aligned to another. If you are happy with the alignment, click the Process button to align them even more accurately and to glue them in place. Again, they will not be exact, but should be extremely close. If the selected points were close, the two meshes should automatically align. They don't have to be exact, but be as accurate as you can. Then, choose 4 or more similar points on each mesh. Try to place them in a position that shows as much overlapping information as you can. Rotate both models around and position them in a similar manner. When the alignment window opens it will display the first glued mesh and the second mesh, both with different colors to assist in the point selection. This feature will use 4 or more user selected points to approximate the alignment of the second mesh in relationship to the first. Next, choose the second mesh and click on Point Based Glueing. This will affix the mesh to a set location and allows the other meshes to be aligned to it. Click on the first mesh file in the menu and choose Glue Mesh Here.
This tool is used to reposition the separate meshes in relation to each other. Close the Layer Dialog menu and click on the Align icon to open the Align tool.
You will now have three separate layers each with meshes that are not aligned.
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