- 3D Printing with RepRap Cookbook
- Richard Salinas
- 434字
- 2021-07-16 11:30:36
Cleaning the scans with MeshLab
MeshLab has a variety of methods that can be used to remove the unwanted 3D artifacts that surround the model. We'll take a simple approach to clean our scans by learning how to use a cleaning filter and selection tool.
Getting ready
The first scan of your series should be positioned on your workspace, where the entire scene can be viewed.
How to do it….
We will proceed as follows:
- Go to Menu and select Filters. Scroll down and select Cleaning and Repairing. In the next cascaded window, select Remove isolated pieces (wrt face num).
- In the pop-up window, keep the default values and select Apply. The small isolated pieces around your model should disappear, but it's very likely that there will be more of them. If this is the case, raise the minimum size value in the pop-up window. Try increasing it by 20 percent and select Apply.
- Continue cleaning until most or all of the isolated fragments are deleted. Take note of the last value chosen. You may find it useful as a starting point for the next scan. If you find that a section of your model has been mistakenly deleted, chose the Reload option icon [
]. This will revert your model back to its original state. - Go to the icon bar and choose the Selected Face Rendering icon [
]. - While at the icon bar, choose the Select Faces icon [
] in the rectangular region. An unusual effect of this procedure is that the entire model will initially be selected and turn red. This can be easily changed by selecting an area outside of the model's space. In fact, at any time when a selection is made, it can be deselected by choosing a selection elsewhere. - Left-click and drag out a rectangle on an area that contains unwanted scanned material. The selection will turn red. Go to the icon bar and click on the Delete Selected Faces and Vertices icon [
]. Alternatively, press Del on the keyboard. To return to the orbit mode at any time, simply click on the Select Faces icon once again. - After all the unwanted pieces have been removed, export the model by going to the icon menu and choosing the Export Mesh icon [
]. - Continue cleaning all the scans in the series that you made of your model. Before you load each scan, clear the workspace by selecting File in Menu and New Empty project or Ctrl + N; otherwise, the scans will build up on top of each other.
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