The file size of a 3D scan can be large. It can be reduced by removing surface details and faking them instead. A normal map is similar to a texture map, but instead of being rendered in color, it is interpreted by the render engine as surface details that catch the light or cast shadows.
ctrl + a > Scale
).mode
to smooth
.Octree Depth
to 8
and lower the Scale
until you find a good spot between preserving the general shape and vertex count. Depending on the complexity of the object you might need to experiment with a different Octree depth.
Reducing the file size of the mesh by remeshing the object.
Mesh > Normals > Recalculate Outside
(shortcut: shift + n).A normal map is essentially an image texture wrapped around a 3D model. Images are flat, so we need to define how we will flatten the 3D object in order to create a reference where the texture will go. Look at the model and find lines where we can cut the model in order to flatten it without too much distortion.
ctrl + left mouse button
.Edge > Mark Seam
(shortcut: ctrl + e
)
Marking the current selection as a seam.
UV > Unwrap
(shortcut: u
)UV Editing
workspace to see how the unwrap turned out.