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authors Carpenter, L.
year 1994
title The A-Buffer, an Antialiased Hidden Surface Method
source Proceedings of SIGGRAPH 94: Computer Graphics 18 no. 3: 103-108
summary The A-buffer (anti-aliased, area-averaged, accumulation buffer) is a general hidden surface mechanism suited to medium scale virtual memory computers. It resolves visibility among an arbitrary collection of opaque, transparent, and intersecting objects. Using an easy to compute Fourier window (box filter), it increases the effective image resolution many times over the Z-buffer, with a moderate increase in cost. The A-buffer is incorporated into the REYES 3-D rendering system at Lucasfilm and was used successfully in the "Genesis Demo" sequence in Star Trek II.
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