| 講演名 | 2014/1/16 Turbidity-based Aerial Perspective Rendering for Mixed Reality , |
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| PDFダウンロードページ | PDFダウンロードページへ |
| 抄録(和) | |
| 抄録(英) | Achieving realistic results is one of the most important goals in outdoor Mixed Reality (MR) applications that are built by merging virtual objects into real scenes. One kind of these applications consists on viewing a virtual object that is distant from the observer. The objective in such applications is to realistically represent the atmospheric effect over the appearance of the virtual object. This natural effect over objects in open air scenes is known as aerial perspective and causes the color of distant objects to become fainter and shift towards the environmental light color. However, aerial perspective modeling is challenging since outdoor illumination is unpredictable and continually changing. In computer vision (CV) and computer graphics (CG), light scattering phenomena causing the aerial perspective effect are generally modeled by a combination of a directly transmitted light and an airlight. Using such model, several studies have been carried out for aerial perspective rendering in complete-virtual applications, but only Zhao have presented a research applied to MR. His approach employs a straightforward adaption of Preetham's CG-directed aerial perspective model; however, his implementation is a computer-intensive task. In this paper, we propose an improved scattering model for MR applications that is based on both a full visible spectrum of light analysis and an atmospheric turbidity estimation. Our method first estimates the atmospheric turbidity by matching the brightness distributions of a captured omnidirectional image and sky models. Then the estimated turbidity is utilized to render the aerial perspective effect as a summation of the direct transmission and the airlight. |
| キーワード(和) | |
| キーワード(英) | Mixed reality / rendering / aerial perspective / turbidity |
| 資料番号 | Vol.2014-CVIM-190 No.6 |
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| 研究会 | MVE |
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| 開催期間 | 2014/1/16(から1日開催) |
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| 申込み研究会 | Media Experience and Virtual Environment (MVE) |
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| 本文の言語 | ENG |
| タイトル（和） | |
| サブタイトル（和） | |
| タイトル（英） | Turbidity-based Aerial Perspective Rendering for Mixed Reality |
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| キーワード(1)（和/英） | / Mixed reality |
| 第 1 著者 氏名（和/英） | / CARLOS MORALES |
| 第 1 著者 所属（和/英） | The University of Tokyo |
| 発表年月日 | 2014/1/16 |
| 資料番号 | Vol.2014-CVIM-190 No.6 |
| 巻番号（vol） | vol.113 |
| 号番号（no） | 403 |
| ページ範囲 | pp.- |
| ページ数 | 8 |
| 発行日 | |