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Expressive chromatic accumulation buffering for defocus blur

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Abstract

This article presents a novel parametric model to include expressive chromatic aberrations in defocus blur rendering and its effective implementation using the accumulation buffering. Our model modifies the thin-lens model to adopt the axial and lateral chromatic aberrations, which allows us to easily extend them with nonlinear and artistic appearances beyond physical limits. For the dispersion to be continuous, we employ a novel unified 3D sampling scheme, involving both the lens and spectrum. We further propose a spectral equalizer to emphasize particular dispersion ranges. As a consequence, our approach enables more intuitive and explicit control of chromatic aberrations, unlike the previous physically-based rendering methods.

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Acknowledgments

The Penguins, Fading-man, Tree (Downy Oak), (Golden) Bird, and Pegasus models are provided through the courtesy of http://www.domawe.net, Riley Lewand, the Xfrog Inc., http://www.cadnav.com, and the AIM@Shape Repository, respectively. Correspondence concerning this article can be addressed to Sungkil Lee.

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Authors and Affiliations

  1. Sungkyunkwan University, Suwon, Republic of Korea

    Yuna Jeong, Sangmin Lee, Soonhyeon Kwon & Sungkil Lee

Authors
  1. Yuna Jeong
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  2. Sangmin Lee
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  3. Soonhyeon Kwon
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  4. Sungkil Lee
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Corresponding author

Correspondence to Sungkil Lee.

Additional information

This work was supported by the Mid-career and Global Frontier (on Human-centered Interaction for Coexistence) R&D programs through the NRF grants funded by the Korea Government (MSIP) (Nos. 2015R1A2A2A01003783, 2012M3A6A3055695).

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Jeong, Y., Lee, S., Kwon, S. et al. Expressive chromatic accumulation buffering for defocus blur. Vis Comput 32, 1025–1034 (2016). https://doi.org/10.1007/s00371-016-1244-x

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