Large Display Light Field Estimation in a Wide Area

• Item type: SIG Technical Reports(1)
• 公開日: 2013-05-23
• タイトル: Large Display Light Field Estimation in a Wide Area
• タイトル / 言語: en
• タイトル: Large Display Light Field Estimation in a Wide Area
• 言語: eng
• キーワード / 主題Scheme: Other
• キーワード / 主題: コメント制度セッション
• 資源タイプ / 資源タイプ識別子: http://purl.org/coar/resource_type/c_18gh
• 資源タイプ: technical report
• 著者所属: Kyoto University
• 著者所属: Kyoto University
• 著者所属: Kyoto University
• 著者所属: Kyoto University
• 著者所属: Kyoto University
• 著者所属(英): en
• 著者所属(英): Kyoto University
• 著者所属(英): en
• 著者所属(英): Kyoto University
• 著者所属(英): en
• 著者所属(英): Kyoto University
• 著者所属(英): en
• 著者所属(英): Kyoto University
• 著者所属(英): en
• 著者所属(英): Kyoto University
• 著者名: PabloRomanHumanes; Shohei, Nobuhara; Tony, Tung; Takeshi, Takai; Takashi, Matsuyama
• 著者名(英): Pablo, RomanHumanes; Shohei, Nobuhara; Tony, Tung; Takeshi, Takai; Takashi, Matsuyama
• 論文抄録 / 内容記述タイプ: Other
• 論文抄録 / 内容記述: 3D reconstruction of a user in an immersive environment presents a set of challenges. In addition to the challenges of working in a low-light environment with dinamically changing illumination, the complexity of modeling a wide area in front of a display with uneven radiant intensity in different directions prevents previous methods from being applicable. We present a general method to model the light environment in front of a large display with the purpose of using it for 3D reconstruction with a single color camera by means of photometric stereo. We indirectly measure the light environment by capturing the appearance of a known object in front of the display with the same camera that will be used for reconstruction. The lighting environment is then modeled using a set of point light sources. Their positions and radiant intensities are fitted to the measurements, as is their directionality function, which accounts for existing screen gain. Our experiments verify our supposition that point light sources that account for screen gain provide a better modeling.
• 論文抄録(英) / 内容記述タイプ: Other
• 論文抄録(英) / 内容記述: 3D reconstruction of a user in an immersive environment presents a set of challenges. In addition to the challenges of working in a low-light environment with dinamically changing illumination, the complexity of modeling a wide area in front of a display with uneven radiant intensity in different directions prevents previous methods from being applicable. We present a general method to model the light environment in front of a large display with the purpose of using it for 3D reconstruction with a single color camera by means of photometric stereo. We indirectly measure the light environment by capturing the appearance of a known object in front of the display with the same camera that will be used for reconstruction. The lighting environment is then modeled using a set of point light sources. Their positions and radiant intensities are fitted to the measurements, as is their directionality function, which accounts for existing screen gain. Our experiments verify our supposition that point light sources that account for screen gain provide a better modeling.
• 書誌レコードID / 収録物識別子タイプ: NCID
• 書誌レコードID / 収録物識別子: AA11131797
• 書誌情報: 研究報告コンピュータビジョンとイメージメディア（CVIM）; 巻 2013-CVIM-187, 号 47, p. 1-7, 発行日 2013-05-23
• Notice: SIG Technical Reports are nonrefereed and hence may later appear in any journals, conferences, symposia, etc.
• 出版者 / 言語: ja
• 出版者: 情報処理学会