Some tools like ZBrush can quickly create a high polygon count, making it easy to exceed our upload limits. We currently support up to 1 million polygons and/or 64 MB files. Otherwise Meshlab has a fairly efficient implementation of vertex attribute transfer (transferring the color information from one model to another). Polygon reduction with MeshLab There's a limit to the complexity of objects that you can upload to Shapeways. When using the poisson recon you can just check "keep color" or something like that. faces, MeshLab and MeshLab with planar simplification outperforms OpenMesh. Chances are that your 3D application already has this built-in. Mesh decimation is a common processing step in polygon mesh processing. Using vertex colors on adecimated model usually does not look very good, since the surface of each triangle is just the color interpolation of the three corner vertices. To repair any bad geometry, use the method from the MakerHome article Shrinking and Remeshing the Fidget Cube: from the Filters menu, choose Cleaning and Repairing, and then try some combination of the tools Remove Duplicate Faces, Remove Duplicated Vertex, Remove Faces From Non Manifold Edges, and/or Remove T-Vertices by Edge Flip. Fortunately theres a solution known as polygon reduction (also known as mesh decimation). Just make sure, that the decimated mesh is in the same position as the camera poses.Įdit: Of course you could just use the decimation algorithm implemented in photoscan. After decimation just reimport the mesh to photoscan and rebuild the texture. If your model is textured, there is also an option (with texture) that will do a good job at keeping your textures positioned properly. After the model has been reduced press the 'Exit' button to return to the main application.
#MESHLAB POLYGON REDUCTION HOW TO#
Alternatively you could, as been suggested, just remesh the points of the mesh using CC poisson implementation (you don't have to randomly subsample points from mesh, just use a lower octree depth). Did you ever get the dreaded ‘Your model has too many polygons for us to process it’ message after uploading your model Then check out our new tutorial in which we explain how to reduce the polygon count of your design using the free open source tool MeshLab. Polygon reduction with MeshLab Install sudo apt install meshlab or Download MeshLab From the menu, select Filters > Remeshing, simplification and construction > Quadratic Edge Collapse Detection. To reduce the number of polygons in a model set you will typically change the 'Polygon Reduction Amount' slider to select the desired percentage of reduction, then press the 'Reduce' button. The Reduce feature also attempts to retain the original shape as part of the reduction process. The required workflow depends a bit on whether you are talking about vertex-colors or proper texture maps.įor texture mapping, you could decimate your mesh using either Meshlabs "Quadric Edge Collapse Decimation", which usually creates quite good results. The Reduce feature lets you automatically reduce the number of polygons in a mesh by a percentage of the overall polygon count, a target number of vertices, or a target number of triangles that you specify.
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