Non-photorealistic rendering is inspired by a long tradition of illustration. I applied NPR techniques to illustration and visualization problems in medical, technical, and other domains. I also worked on combining NPR methods with other rendering techniques to create hybrid rendering styles for illustration and visualization. For example, I have used non-photorealistic techniques to visualize uncertainty and style elements in archaeological reconstructions as well as for technical and medical illustration and visualization. I also worked on combining pure non-photorealistic techniques with other rendering methods such as shading and volume rendering to produce hybrid visualizations which are very useful, in particular, in medical imaging.
A technical and a medical illustration.
(:neo_flv-player (http:../personal/videos/)Neumann_2007_NLI(.flv) width=320 height=240 startimage="../personal/videos/Neumann_2007_NLI.jpg" -link:)
More recently, I have worked on comparing computer-generated non-photorealistic renditions with professionally created hand-drawn illustrations. The surprising result was that people could, in general, distinguish the two types of images but still liked both categories. They enjoyed the hand-drawn for their character and the computer-generated for their precision and three-dimensional appearance.
Selected Demos, Videos, and Projects:
Exploration of the Brain’s White Matter Structure through Visual Abstraction and Multi-Scale Local Fiber Tract Contraction