@article{mattausch-2010-tao,
  title =      "High-Quality Screen-Space Ambient Occlusion using Temporal
               Coherence",
  author =     "Mattausch, Oliver and Scherzer, Daniel and Wimmer, Michael",
  year =       "2010",
​  abstract =   "Ambient occlusion is a cheap but effective approximation of
               global illumination. Recently, screen-space ambient
               occlusion (SSAO) methods, which sample the frame buffer as a 
               discretization of the scene geometry, have become very
               popular for real-time rendering. We present temporal SSAO
               (TSSAO), a new algorithm which exploits temporal coherence
               to produce high-quality ambient occlusion in real time.   
               Compared to conventional SSAO, our method reduces both noise
               as well as blurring artifacts due to strong spatial
               filtering, faithfully representing fine-grained geometric
               structures. Our algorithm caches and reuses previously
               computed SSAO samples, and adaptively applies more samples
               and spatial filtering only in regions that do not yet have
               enough information available from previous frames. The
               method works well for both static and dynamic scenes.",
  pages =      "2492--2503",
  month =      dec,
  number =     "8",
  issn =       "0167-7055",
  journal =    "Computer Graphics Forum",
  volume =     "29",
  keywords =   "temporal coherence, ambient occlusion, real-time rendering",
  URL =        "http://www.cg.tuwien.ac.at/research/publications/2010/mattausch-2010-tao/"
}