Feature lines on a mesh carry the visually most prominent characteristics of the mesh. This paper introduces a way to detect the feature lines on a mesh based on utilizing discrete differential operators on piecewise linear meshes.
- Detect “salient ridges” on meshes
- Compute points with extreme principal curvatures
- Under certain conditions, these form feature curves
- Checking these conditions requires computing 1st and 2nd derivatives of curvatures
- Compute principal curvatures
- Compute discrete extremalities
- Smooth discrete extremalities
- Determine regularity for each triangle
- Trace feature lines in regular triangles
- Process singular triangles
- Libigl
- Direction of principal curvatures on a half cylinder
- Color map of the extramalities on a bumpy cube
- e max (absolute values)
- e min (absolute values)
- e max (absolute values)
- Singular triangles on a hand
- Feature lines
- on a camel head
- on a bumpy cube
- on a bumpy plane
- on a camel head
- Remove small ridges by a threshold