Summary

This project utilizes the curvature tensor of the 3D mesh to determine the direction of pen hatches used to perform a non-photorealistic rendering of the original 3D mesh. This is image comes from a weighted composite of 4 images, the silhouette , the major curvature streamlines, the minor curvature streamlines, and a tone map based on shading. 

Curvature Tensor?

The curvature tensor is simply a way of defining and storing the information of how the mesh is curving at every vertex. To the right is a visual of the curvature tensor of the Stanford Bunny, with red lines pointing towards major curvature and blue towards minor.