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An Approximation Technique for Real-time Rendering of Phong Reflection Model with Image-based Lighting  

Jeong, Taehong (Digital Media Department, Ajou University)
Shin, Hyun Joon (Digital Media Department, Ajou University)
Publication Information
Journal of the Korea Computer Graphics Society / v.20, no.1, 2014 , pp. 13-19 More about this Journal
Abstract
In this paper, we introduce a real-time method to render a 3D scene using image-based lighting. Previous approaches for image-based lighting focused on diffuse reflection and mirror-like specular reflection. In this paper, we provide a simple preprocessing approach to efficiently approximate Phong reflection model, which has been used for computer graphics applications for several decades. For diffuse reflection, we generate a texture map for diffuse reflection by integrating the source image in preprocessing step, similarly to the previous approaches. We adopt the similar idea to produce a set of specular reflection maps for various material shininess. By doing this, we can render a dynamic scene without high computational complexity or numerous texture map access.
Keywords
Rendering; Image-based lighting; Phong reflection model;
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