The author discusses the concept of occluding contours in computer graphics and the challenges associated with rendering them in a visually pleasing and accurate manner. They explain that while simple occluding contour renderings are common in animations and films, more complex stylizations are difficult to achieve reliably. The author introduces their papers ConTesse and a method for generating smooth contours based on input meshes, which provide solutions to these challenges. They acknowledge that previous algorithms have failed to produce satisfactory results and highlight the impact of gaps and errors in contour rendering on applications like animation and vectorization. The author concludes by emphasizing the importance of further research and development in this area.
https://aaronhertzmann.com/2023/07/31/occluding-contours-part-1.html