A practical algorithm using virtual point light for the rendering process

Developing robust visual tracking algorithms for real-world is still a major challenge today in many fields such as design, manufacturing, ecommerce and other fields are used to simulate the appearance of objects and scenes. Realistic looking is often critical, and calculating global illumination (GI) is an important contributor to image reliability; in which we take into account all interreflection effects in the scene. GI approximation methods, such as virtual point light (VPL) algorithms, are efficient, but they can produce image artifacts and distortions of object appearance. In this paper we present a practical algorithm for rendering diverse frequency of interreflection effects. Our method builds upon a standard representation of the scene, based on which a new mathematical formulation of the interreflection equation is made. We systematically study simulation of complex effects on image quality and material appearance of global illumination approximations made by VPL algorithms to provide a fast and smoother complex illumination. Efficiently, the computational effort is heavily reduced.