Screen-Space Ambient Occlusion Using Summed-Area Table

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  • Slomp Marcos
    Department of Information Engineering, Graduate School of Engineering, Hiroshima University
  • Mikamo Michihiro
    Department of Information Engineering, Graduate School of Engineering, Hiroshima University
  • Tamaki Toru
    Department of Information Engineering, Graduate School of Engineering, Hiroshima University
  • Kaneda Kazufumi
    Department of Information Engineering, Graduate School of Engineering, Hiroshima University

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Other Title
  • サムドエリアテーブルを用いたスクリーン空間環境遮蔽手法
  • サムドエリアテーブル オ モチイタ スクリーン クウカン カンキョウ シャヘイ シュホウ

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Description

There is an increasing demand for high quality real-time graphics nowadays. Shadows play an important role to the realism of computer-generated images by enhancing depth perception and curvature reception. Due to their global nature, shadows introduce overwhelming complexity to rendering algorithms. Recently, screen-space ambient occlusion techniques started to flourish, and are now the de facto standard for real-time dynamic shadow synthesis. A few issues remain, though, such as the sampling quality and noise artifacts. The contributions of this work are two-folded: a variation of screen-space ambient occlusion that uses Summed-Area Tables, yielding satisfactory results yet performing better than previous attempts, and serving as a new application to the arsenal of Summed-Area Tables.

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