You can also set it higher to align faster. Any smaller and you are just wasting time. equal (or slightly under) the specified error floor. This is a function of your scanner and should be approx. Once the initial alignements are complete, drop it down to 1mm to 'fine tune' Target distance - this tells the algorithm when to stop. A value of 5 or 10 (in millimeters) is usually a good start. Typically for a manually aligned object you want this to be large enough to encompass your 'point picking' error. Minimal starting distance - this ignores any samples that are outside of this range. 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. This option is off by default because it is useful only in particular situations, like when you have perfectly flat areas finely tessellated.You will now have three separate layers each with meshes that are not aligned. Like the quality threshold it affects the accuracy/complexity ratio. It can greatly improve the quality of the shape of the final triangles on perfectly planar portions of the mesh. This option is on by default.Īdd additional simplification constraints that try to preserve the current shape of the triangles. ![]() If disabled, the edges are collapsed onto one of the two vertices and the vertices of the final mesh are a subset of the original mesh. When collapsing an edge, the chosen vertex position minimizes the current estimated error. Optimal position of simplified vertices: Yes The value is in the range : 0 accept any kind of face (no penalties), 0.5 penalize faces with quality Normals, Curvature and Orientation > Re-Orient all faces coherently (note that this will only work for manifold objects). To approximate accurately the original shape only with well shaped triangles you require a higher number of faces with respect to allowing more freedom in the final triangle shape. ![]() Quality threshold affects the simplification penalizing bad shaped faces. ![]() Selecting a value of 1 yields great results. Target number of faces - The number of faces you would like your mesh to haveĮnter a value between 0 and 1 here the higher the value, the harder MeshLab tries to stick to your original model's shape.
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