Real-time Curvature Estimation on Deformable Models

Surface curvature and its derivative are used in a number of applications including non-photorealistic line drawing techniques. CPU algorithms for estimating curvature are a reasonable choice for static models, but curvature estimates for deformable models must be recomputed every frame. For many deformable models, for example those using vertex blending, the deformed model is only ever present in the GPU. We introduce a GPU algorithm for estimating curvature on any model using the programmable geometry shader. CR Categories: I.3.3 [Computer Graphics]: Picture/Image Generation—Line and curve generation;