Efficient Image-Based Methods for Rendering Soft Shadows
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Description: Presents two efficient image-based approaches for computation and display of high-quality soft shadows from area light sources: Layered attenuation maps and coherence-based raytracing. Authors: Maneesh Agrawala, Ravi Ramamoorthi, Alan Heirich and Laurent Moll.
Efficient Image-Based Methods for Rendering Soft Shadows Efficient Image-Based Methods for Rendering Soft Shadows We present two efficient image-based approaches for computation and display of high-quality soft shadows from area light sources. Our methods are related to shadow maps and provide the associated benefits. The computation time and memory requirements for adding soft shadows to an image depend on image size and the number of lights, not geometric scene complexity. We also show that because area light sources are localized in space, soft shadow computations are particularly well suited to image-based rendering techniques. Our first approach---
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