Efficient Ray Tracing Through Aspheric Lenses and Imperfect Bokeh Synthesis

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dc.contributor.authorJoo, Hyuntaeen_US
dc.contributor.authorKwon, Soonhyeonen_US
dc.contributor.authorLee, Sangminen_US
dc.contributor.authorEisemann, Elmaren_US
dc.contributor.authorLee, Sungkilen_US
dc.contributor.editorElmar Eisemann and Eugene Fiumeen_US
dc.date.accessioned2016-06-17T14:09:38Z
dc.date.available2016-06-17T14:09:38Z
dc.date.issued2016en_US
dc.description.abstractWe present an efficient ray-tracing technique to render bokeh effects produced by parametric aspheric lenses. Contrary to conventional spherical lenses, aspheric lenses do generally not permit a simple closed-form solution of ray-surface intersections. We propose a numerical root-finding approach, which uses tight proxy surfaces to ensure a good initialization and convergence behavior. Additionally, we simulate mechanical imperfections resulting from the lens fabrication via a texture-based approach. Fractional Fourier transform and spectral dispersion add additional realism to the synthesized bokeh effect. Our approach is well-suited for execution on graphics processing units (GPUs) and we demonstrate complex defocus-blur and lens-flare effects.en_US
dc.description.number4en_US
dc.description.sectionheadersLooking Through Surfacesen_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume35en_US
dc.identifier.doi10.1111/cgf.12953en_US
dc.identifier.issn1467-8659en_US
dc.identifier.pages099-105en_US
dc.identifier.urihttps://doi.org/10.1111/cgf.12953en_US
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.subjectI.3.3 [Computer Graphics]en_US
dc.subjectPicture/Image Generationen_US
dc.subjectDisplay Algorithmsen_US
dc.titleEfficient Ray Tracing Through Aspheric Lenses and Imperfect Bokeh Synthesisen_US
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