Image-Based Lighting
Image-based lighting (IBL) is the process of illuminating scenes and objects (real or synthetic) with images of light from the real world. It evolved from the reflection-mapping technique in which we use panoramic images as texture maps on computer graphics models to show shiny objects reflecting real and synthetic environments. IBL is analogous to image-based modeling, in which we derive a 3D scene’s geometric structure from images, and to image-based rendering, in which we produce the rendered appearance of a scene from its appearance in images. When used effectively,IBL can produce realistic rendered appearances of objects and can be an effective tool for integrating computer graphics objects into real scenes.
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