University of Konstanz
Graduiertenkolleg / PhD Program
Computer and Information Science

Graduation Talks


Authentic and efficient reproduction of artistic styles in the field of non-photorealistic rendering


Thomas Luft, University Konstanz
Konstanz, Germany

date & place

Wednesday, 28.11.2007, 16:15 h
Room C252


Non-photorealistic rendering (NPR) is a young research field that received an increased attention within the last fifteen years. In contrast to photorealistic computer graphics, which aims at a physically correct simulation of light transport and reflection, NPR produces a personal, artistic, and abstracted interpretation of the content, and thereby, it is able to communicate information in an expressive, focused, and idealized way.
There are various applications that benefit from this form of depiction: Applications that traditionally prefer natural media and style, such as architectural and design sketches, benefit from an abstract and artistic reproduction of 3d content. Other applications benefit from the simplified and focused depiction of information such as technical illustrations and animations.
The reproduction of an artistic style such as watercolor is thereby a challenging problem that aims especially at the efficient and visually convincing reproduction of the medium itself, as well as a controllable temporal coherence for animation. The result allows various new applications ranging from contemporary, animated artwork, interactive design studies to real-time previews within high-quality rendering.
This thesis focuses on methods for the authentic and efficient reproduction of artistic styles in the field of non-photorealistic rendering. In the following two basic techniques are introduced to achieve a visually convincing reproduction of watercolor paintings for realtime contexts. In the first section an algorithm is decribed that resamples the visual appearance of a watercolor wash by image processing techniques. The second section examplifies two stylistic means that artists often apply in paintings to achieve highly a abstracted and expressive depiction of the motive.