Real-time lens blur effects and focus control

Sungkil Lee, Elmar Eisemann, Hans-Peter Seidel
ACM Transactions on Graphics (Proc. of SIGGRAPH), Volume 29, page 65:1--65:7 - July 2010
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We present a novel rendering system for defocus-blur and lens effects. It supports physically-based rendering and outperforms previous approaches by involving a novel GPU-based tracing method. Our solution achieves more precision than competing real-time solutions and our results are mostly indistinguishable from offline rendering. Our method is also more general and can integrate advanced simulations, such as simple geometric lens models enabling various lens aberration effects. These latter are crucial for realism, but are often employed in artistic contexts too. We show that available artistic lenses can be simulated by our method. In this spirit, our work introduces an intuitive control over depth-of-field effects. The physical basis is crucial as a starting point to enable new artistic renderings based on a generalized focal surface to emphasize particular elements in the scene while retaining a realistic look. Our real-time solution provides realistic, as well as plausible expressive results.

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BibTex references

@Article { LES10a,
  author       = "Lee, Sungkil and Eisemann, Elmar and Seidel, Hans-Peter",
  title        = "Real-time lens blur effects and focus control",
  journal      = "ACM Transactions on Graphics (Proc. of SIGGRAPH)",
  volume       = "29",
  pages        = "65:1--65:7",
  month        = "July",
  year         = "2010",
  note         = "numpages: 7
publisher: ACM
issue_date: July 2010

acmid: 1778802
issue: 4
articleno: 65
address: New York, NY, USA
issn: 0730-0301",
  url          = ""

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