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Real-Time Depth-of-Field Rendering Using Anisotropically Filtered Mipmap Interpolation

Authors
Lee, SungkilKim, Gerard JounghyunChoi, Seungmoon
Issue Date
May-2009
Publisher
IEEE COMPUTER SOC
Keywords
Depth of field; mipmap interpolation; anisotropic filtering; virtual reality
Citation
IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS, v.15, no.3, pp 453 - 464
Pages
12
Indexed
SCIE
SCOPUS
Journal Title
IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS
Volume
15
Number
3
Start Page
453
End Page
464
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/120104
DOI
10.1109/TVCG.2008.106
ISSN
1077-2626
1941-0506
Abstract
This article presents a real-time GPU-based postfiltering method for rendering acceptable depth-of-field effects suited for virtual reality. Blurring is achieved by nonlinearly interpolating mipmap images generated from a pinhole image. Major artifacts common in the postfiltering techniques such as a bilinear magnification artifact, intensity leakage, and blurring discontinuity are practically eliminated via magnification with a circular filter, anisotropic mipmapping, and smoothing of blurring degrees. The whole framework is accelerated using GPU programs for constant and scalable real-time performance required for virtual reality. We also compare our method to recent GPU-based methods in terms of image quality and rendering performance.
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