- 3D Printing with RepRap Cookbook
- Richard Salinas
- 464字
- 2021-07-16 11:30:31
Removing scanning artifacts with Meshmixer
Sometimes, we'll find odd distortions in our 3D scanned models. These are digital artifacts that are generated from glares, poorly focused photos, and other degraded information, which the scanning program processes. In this recipe, we'll learn how to remove these artifacts from the model.
Getting ready
You'll need to open a model in Meshmixer that has similar defects as shown in the following image:
How to do it...
We will proceed as follows:
- Zoom in on the artifact. Choose Select. From the pop-up toolbox, we'll use the default brush tool. Adjust its size by using the size slider and then select the end of the artifact. The pop-up toolbox will change and provide more options.
- Go to the toolbox and select Modify. Scroll down the cascaded window and select Expand Ring. The selection will grow slightly larger.
- We can also use the keyboard shortcut (Shift + >). This will also expand the ring. Continue using the keyboard shortcut until the area is selected up to the model. In the following image, we can see the selection illustrated:
- Now, let's get rid of it. Choose Edit from the toolbox. Scroll down the cascaded window and select Discard. You can also use the keyboard shortcut X.
- We've created a hole in the model's mesh by removing the artifact. To repair it, choose Inspector. In the following left-hand side image, the hole becomes outlined in blue with its attached blue globe. Left-click on it to repair it. Now, we've removed the artifact, but as we can see in the image on the right, the area is still distorted. We can fix this with the smooth tool.
- Choose Sculpt from the toolbar. From the pop-up toolbox, choose Brushes. You'll be confronted with a lot of choices. In this recipe, what we're interested in is the ShrinkSmooth brush. The brush can be adjusted for the size and strength in the Properties section.
- Click, hold, and drag the brush across the distorted area as shown in the following left-hand side image:
- As you move over the area, it will become smoother. Experiment with different brush sizes and strengths for each of the artifacts that your model may have.
How it works…
Meshmixer has many different brushes that will perform very specific functions. Most of these functions are better understood by experimentation on a model. One of the best methods for doing this is by using a sphere. This can be found by going to File in the menu and selecting Import Sphere. Dragging each brush across its surface will give you a good idea of its capabilities.
These brushes are more useful when the functions of each brush are inverted. This is accomplished by holding Shift on the keyboard as you drag the brush.
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