Abstract
A new instrument to measure the in situ bidirectional reflectance distribution function (BRDF) of surfaces is described. This instrument measures the BRDF for eight illumination angles from 0 to 65 deg, three colors (475, 570, and 658 nm), and at over 100 selected viewing angles. The viewing zenith angles range from 5 to 65 deg, and the azimuth angles, relative to the illumination direction, range from 0 to ± 180 deg. Many tests of the system have been run and show that for flat surfaces the BRDF of a sample surface can be measured with a precision of 1-5% and an accuracy of 10% of the measured reflectance. The BRDF for a dry and wet sand sample is presented as a demonstration of the instrument.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 6197-6206 |
| Number of pages | 10 |
| Journal | Applied Optics |
| Volume | 39 |
| Issue number | 33 |
| State | Published - Nov 20 2000 |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Instrument to measure the bidirectional reflectance distribution function of surfaces. / Voss, Kenneth; Chapin, Albert; Monti, Marco; Zhang, Hao.
In: Applied Optics, Vol. 39, No. 33, 20.11.2000, p. 6197-6206.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Instrument to measure the bidirectional reflectance distribution function of surfaces
AU - Voss, Kenneth
AU - Chapin, Albert
AU - Monti, Marco
AU - Zhang, Hao
PY - 2000/11/20
Y1 - 2000/11/20
N2 - A new instrument to measure the in situ bidirectional reflectance distribution function (BRDF) of surfaces is described. This instrument measures the BRDF for eight illumination angles from 0 to 65 deg, three colors (475, 570, and 658 nm), and at over 100 selected viewing angles. The viewing zenith angles range from 5 to 65 deg, and the azimuth angles, relative to the illumination direction, range from 0 to ± 180 deg. Many tests of the system have been run and show that for flat surfaces the BRDF of a sample surface can be measured with a precision of 1-5% and an accuracy of 10% of the measured reflectance. The BRDF for a dry and wet sand sample is presented as a demonstration of the instrument.
AB - A new instrument to measure the in situ bidirectional reflectance distribution function (BRDF) of surfaces is described. This instrument measures the BRDF for eight illumination angles from 0 to 65 deg, three colors (475, 570, and 658 nm), and at over 100 selected viewing angles. The viewing zenith angles range from 5 to 65 deg, and the azimuth angles, relative to the illumination direction, range from 0 to ± 180 deg. Many tests of the system have been run and show that for flat surfaces the BRDF of a sample surface can be measured with a precision of 1-5% and an accuracy of 10% of the measured reflectance. The BRDF for a dry and wet sand sample is presented as a demonstration of the instrument.
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UR - http://www.scopus.com/inward/citedby.url?scp=0000807309&partnerID=8YFLogxK
M3 - Article
VL - 39
SP - 6197
EP - 6206
JO - Applied Optics
JF - Applied Optics
SN - 1559-128X
IS - 33
ER -