Point-based rendering methods have proven to be effective for the display of large point cloud surface models, basically replacing global surface reconstruction with local surface estimations, for example, via splats or implicit functions. Crucial to their performance in terms of rendering quality and speed is the representation of the local surface patches. We present an approach that avoids a...

Generating soft shadows in real-time is difficult. Exact methods (such as ray tracing, and multiple light source simulation) are too slow, while approximate methods often over-estimate the umbra regions. In this paper, we introduce a new algorithm based on the shadow map method to quickly and accurately render soft shadows produced by a light source. Our method builds inner and outer translucen...

We present a new real-time shadow rendering approach whose kernel is a hierarchical disk-based approximation to the scene geometry. We show that this approximated representation greatly accelerates the visibility inquiry, facilitating the real-time computation of anisotropic occlusion in GPU. By taking account of anisotropic occlusion, our approach can simulate the shadow cast from not only amb...

The following article formulates the optimization problem for shadow maps without providing any good answer to the problem. For our purpose, a shadow map is a rasterized image of depth information for a scene from a light's perspective. The map is used in rendering to test if a given pixel is visible with respect to a light source. An overview of the method is provided in Algorithm 1.

We demonstrate a real-time interactive system illuminating your shadows cast on the floor. A user occluding the projector light may create undesirable shadow in front-projector-based systems. We overcome and turn this problem to our advantage with an elaborately designed optics including multi-projection techniques. The systems will make you experience an exciting space of interaction performin...