書誌事項
- タイトル別名
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- MEASUREMENT OF THE ALL SKY SPECTRAL RADIANCE DISTRIBUTION USING A DIGITAL CAMERA WITH A FISHEYE LENS
- ギョガン レンズ ツキ デジタルカメラ ニ ヨル ゼン テンクウ ブンコウ ホウシャ キド ブンプ ノ ソクテイホウ
この論文をさがす
抄録
We developed a method of measuring the spectral radiance of all sky elements using a general purpose digital camera and a circular fisheye lens. The accuracy of the fisheye camera is adequate for practical daylight design. The instrument is portable for field measurements. The digital camera with the fisheye lens is colorimetrically calibrated to obtain the calibration functions which transfer the video signal values RGB on a digital color image into the absolute values of CIE 1931 tristimulus values XYZ pixel by pixel. The calibrated fisheye digital camera measures the all sky distribution of the XYZ tristimulus values. The XYZ tristimulus values are transferred into the all sky spectral radiance distribution in two ways: (1) by using the CIE daylight illuminant and (2) by using the eigenvectors obtained by principal component analysis of measured spectral radiances of the sky elements by a spectroradiometer. The accuracy of the all sky spectral radiance distribution is validated by comparison with the spectral radiance measured by the spectroradiometer.
収録刊行物
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- 日本建築学会環境系論文集
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日本建築学会環境系論文集 78 (690), 623-629, 2013
日本建築学会
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詳細情報 詳細情報について
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- CRID
- 1390282680177106944
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- NII論文ID
- 130004937086
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- NII書誌ID
- AA11830377
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- ISSN
- 1881817X
- 13480685
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- NDL書誌ID
- 024828295
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可