Recent Advances in the User Evaluation Methods and Studies of Non-Photorealistic Visualization and Rendering Techniques

While traditional computer graphics research to this day still focuses on the production and assessment of photorealism, a relatively new field, the one of nonphoto realistic rendering (NPR), has produced results that focus on viewer engagement by the use of stylization, abstraction and expressiveness. In this paper we briefly describe some of the techniques used today and then proceed to identify some the most important evaluation studies associated with NPR by categorizing them and outlining the applications they have been used in, their methods and finally the results and their impact on future work in this area.