A Hybrid Approach to Real-Time Abstraction

To faithfully represent a scene through non-photorealistic rendering (NPR), it is vital that all available scene data be taken into account. We present an automatic hybrid framework for creating abstractions of 3D scenes in real-time. Our approach uses a combination of object-space and image-space information to produce stylistic and reliable results. Calculations using scene vertex data are combined with image processing abstraction methods to create temporally coherent renderings in real-time. The abstraction approach can be extended to emphasize specific features of a scene by using object-space information to create stylised focus on particular objects within the scene. The hybrid abstraction techniques are evaluated using a short perceptual experiment which shows that the styles created using the framework can improve recognition times. We believe the techniques described could be of use in interactive applications to stylise renderings and better communicate scene information. CR Categories: I.3.7 [Computer Graphics]: Three Dimensional Graphics and Realism—Colour, shading, shadowing and texture;