Model Post-processing

Map after repairing iReal 2E scanned model

iReal 3D & Gom Inspect / Geomagic Wrap

Preparation:

Scan the color model and save it as a Mesh Project file.

Process:

1. Open File Explorer and import the stl files from the Mesh Project folder into Warp or Gom.

2. Some common steps to simply repair the model: Fill All, Mesh Doctor, Remove Spikes, and Defeature.

3. Replace the .stl(Binary) with your repaired one. Also you can copy the original .stl file in case of needs.

4. Open iReal 3D ，import >> Mesh Project.

5. In the Mesh interface, you click Map icon. After mapping, it will be a new model with texture.

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Replace the laser scanned model

iReal 3D & Gom Inspect / Geomagic Warp

Preparation:

.stl file

Process:

Similar with Map after repairing iReal 2E scanned model

Replace the original .stl model with a better model (such as the ZBrush carved model and the laser-scanned model) and then map it.

It should be noted that the new model and the old model should be completely aligned. Only in this way, the position will not be disordered when mapping. The alignment methods vary from software to software. You can use software such as Wrap / Gom to align. The old model is set to fixed , and the new model is set to floating. 1

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Human Body Model Repair

iReal 3D & ZBrush & Geomagic Wrap & Blender

Model Result Requirement:

No holes, flat soles, no non-manifold 2 Mesh, clear facial features, accurate color

Process:

1. In human body scanning, the floor will stick together on the bottom of the foot. We use Wrap to delete it: Wrap >> Polygons >> Trim with plane > Definition: three points >select three points on the floor>> Apply > OK

2. Hole repair is relatively simple: Wrap > Polygons >> Fill single >>The sole plate uses flat to fill the hole, and the rest parts use curvature to fill the hole

3. Use the Mesh Doctor to analyze the model as a whole, including non-manifold edges.

4. Save the .stl file and import it into the ZBrush software. The steps are as follows: Tools >> Import >>Select the .stl file>>Drag and drop it in the 3D view with the left button>> T >> Tools >> Geometry Editing > Dynamesh >>Select the resolution and click again>>Sculpt the five features and body>>Blank position ctrl+Left click and drag fast Dynamesh>>Export the stl again

5. Map after repairing iReal 2E scanned model

6. After Texture Adjustment, save the .obj file.

7. Use Blender to repair the texture, the steps are: File >> Import >> Wavefront(.obj) >> Select the obj file >> Select the model >> Texture drawing >> Clone tool >> Save the texture separately when finished

Hint

Learn more about Geomagic Wrap crop patching and Blender texture drawing on the Internet.

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1

Alignment is to overlap two different models (A&B) under the same ` spatial coordinate system ‘. which means A&B are overlapped based on B’s / A’s coordinate. Because the mapping coordinates in the scanning project are based on the old model before replacement, when the new and old models are aligned, it must be based on the old model’s coordinate.

2

In triangular mesh surfaces, most algorithms are based on manifold mesh, which is defined as follows:

1. Each edge is incident to only one or two faces;

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2. The faces incident to a vertex form a closed or an open fan.

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All triangular mesh surfaces that do not meet the above definition are non-manifold mesh. Here are some examples of non-manifold mesh: