SYSTEMS AND METHODS FOR ROBUST SAMPLING FOR REAL-TIME RELIGHTING OF OBJECTS IN NATURAL LIGHTING ENVIRONMENTS

摘要

The present invention provides a surface mesh (surface mesh) to about PRT (Precomputed Radiance Transfer) signal calculation algorithm used, and the transfer signal of the spatial variation of surface on all the places in enough sea (resolve) that mesh facet (facet ) them to an improved system for details PRT divided by increasing the number of the vertex of the surface (vertices). The method of the system, ensures that the radiance transfer shader Ding (radiance transfer shading) that generate a color of sufficient accuracy over the entire surface. In certain embodiments, the transfer is always calculated only at the surface vertex, this results in a tessellated (tessellation) aliasing and blurring (blurring) to house a certain amount of detail of the surface illumination in these too sparse area. The method also includes the density and space sampling techniques to measure the transfer signal to the appropriate desired resolution while the aliasing to a minimum. Once calculated, the signals are displayed as simple as possible to the storage and calculation execution time requirements to a minimum. ; Signal transfer, the surface vertex, resolution, computer graphics, triangle