Quad-Based Fourier Transform for Efficient Diffraction Synthesis

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dc.contributor.authorScandolo, Leonardoen_US
dc.contributor.authorLee, Sungkilen_US
dc.contributor.authorEisemann, Elmaren_US
dc.contributor.editorJakob, Wenzel and Hachisuka, Toshiyaen_US
dc.date.accessioned2018-07-01T07:23:31Z
dc.date.available2018-07-01T07:23:31Z
dc.date.issued2018
dc.description.abstractFar-field diffraction can be evaluated using the Discrete Fourier Transform (DFT) in image space but it is costly due to its dense sampling. We propose a technique based on a closed-form solution of the continuous Fourier transform for simple vector primitives (quads) and propose a hierarchical and progressive evaluation to achieve real-time performance. Our method is able to simulate diffraction effects in optical systems and can handle varying visibility due to dynamic light sources. Furthermore, it seamlessly extends to near-field diffraction. We show the benefit of our solution in various applications, including realistic real-time glare and bloom rendering.en_US
dc.description.number4
dc.description.sectionheadersScreen-space Methods
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume37
dc.identifier.doi10.1111/cgf.13484
dc.identifier.issn1467-8659
dc.identifier.pages167-176
dc.identifier.urihttps://doi.org/10.1111/cgf.13484
dc.identifier.urihttps://diglib.eg.org:443/handle/10.1111/cgf13484
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.titleQuad-Based Fourier Transform for Efficient Diffraction Synthesisen_US
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