Abstract—In line drawings, the line thickness is an important
element for artists to depict shape and express emotion. In this
paper, we proposed an approach for the real-time rendering of
artistic silhouette outlines, based on the inherent aesthetic law
of line thickness. We adopted the triangle shell technique as the
basis of our silhouette outlines rendering method. By shifting
the vertex of the back-facing mesh along its vertex normal
under the aesthetic law, we recovered the variation of line
thickness that artists often use when creating line drawings,
and obtained aesthetically pleasing rendering results. Our
method is implemented on GPU, a