Simplification of triangle meshes with radiance attribute
Presented by K. Vanhoey at the
11th Eurographics Symposium on Geometry Processing, July 3-5 2013, Genova, Italy
View-dependent surface colour of virtual objects can be represented by outgoing radiance. Data resulting from an acquisition process can be very large and computationally intensive to visualise. Mesh simplification can provide a trade-off between efficiency and precision. In this paper we propose a new metric for simplifying meshes with radiance attribute through successive edge collapses. Whereas state-of-the-art simplification methods consider scalar or vectorial attributes, we conversely consider hemispherical functions. Our approach exploits a symmetrised representation of radiance functions. This enables us to define coherently distance measurement, interpolation and improved rendering, as shown by our results. Both synthetic and acquired examples illustrate the benefit and the relevance of this process.