| Project/Area Number |
24700093
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Media informatics/Database
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| Research Institution | Wakayama University |
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Principal Investigator |
IWASAKI Kei 和歌山大学, システム工学部, 准教授 (90379610)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | レンダリング / イメージベーストライティング / BRDF / 球面ガウス関数 / グラフィクス / 環境照明 / リアルタイムレンダリング |
|---|
| Outline of Final Research Achievements |
We propose a real-time rendering method for dynamic scenes under all-frequency environmental lighting. To render the object surfaces illuminated by distant environmental lighting, our method represents the environmental lighting and the BRDFs with spherical Gaussians and represents the visibility functions with spherical signed distance functions (SSDFs). Although these representations enable us to render scenes under all-frequency lighting in real-time, the previous method is limited to static scenes since the computational costs of SSDFs are quite high. To address this problem, we propose an efficient calculation method of SSDFs by approximating the object geometries with a set of spheres. Moreover, to accelerate the SSDF calculation, our method employs the hierarchical representation of spheres. This makes it possible to render fully dynamic scenes where the viewpoints, lighting, and BRDFs can be changed at run-time and objects can move, rotate and be deformed in real-time.
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