Projection mapping is a technique that involves taking an image of a scene, building very simple geometry that lines up with it, and then projecting the reference image onto the geometry as a texture. This technique is often used to extend a shot when there is no additional footage, or as a high-speed alternative to acurately building and texturing an entire scene. The technique does have its limitations, since moving the camera two far will generally reveal areas with no texture.
Published: October 31, 2008
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