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xRobert Richmond Light Field Mapping September 2001 Page Three Contents Page One: Applications of Light Field Mapping Synthetic Imaging Real-World Imaging Technical Analysis Page Four: Triangle Centered Approximation Triangle-Centered Light Field Mapping Analysis of Triangle-Centered Approximation Page Two: Data Acquisition Resampling and Normalization Page Five: Vertex-Centered Approximation Vertex-Centered Light Field Mapping Analysis of Vertex-Centered Approximation Page Three: Surface Light Field Approximation Page Six: Hardware Acceleration Light Field Map Compression Final Thoughts Surface Light Field Approximation Once the radiance data is processed, the derivative surface light map must be correlated to the basic surface primitives.  This method allows the light map to best represent each viewing direction with minimal loss of detail. The earlier described resampling process is utilized to build substituted data elements for each surface primitive. The formula must now be decomposed into a matrix format to best describe lighting variances from multiple viewing directions within a specified time-frame. The formula can now be decomposed and truncated after a variable numbers of terms in-order to form two dimensional textures. Since the textures can now be defined, the corresponding surface light maps can be derived through approximation.  One approximation term is equivalent to the additive manipulation of one surface map plus one view map.  The actual representative process of approximation cab derived through either triangle-centered or vertex-centered operations.   Page Four . . .     Back to Top

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