Database - Lumber Spectra

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Munsell colors matt
(AOTF measured)
Munsell colors matt
(Spectrofotometer measured)
Munsell colors glossy
(Spectrofotometer measured)
Munsell colors glossy (all)
(Spectrofotometer measured)

Natural colors
Forest colors
Paper spectra
Candy colors
Lumber spectra
Agfa IT8.7/2 set
Daylight spectra

Autumn Colors

Munsell Book

Programs & Macros

Obtaining & Unpacking

The spectra from sawn timber branches and from pure sawn timber without any branches. All measurements were made by using four-mirror system in sample and reference space where one mirror in sample space was replaced with a sample. Backround corrections were made first by using a mirror instead of a sample in sample space. So reflection from every samples were compared to a reflection from a mirror (which were determined to one hundred percent). Filter were used in front of reference beam to cut out 87.25 % because the specular reflectance from each sample were originally lower than one percent. So every reflectance values are relatively but anyway proportional to each other.

Measuring equipment: Perkin-Elmer lambda 9 UV/VIS/NIR spectrofotometer.

Wavelength interval: 380 nm - 2700 nm.

Wavelength resolution: 1 nm.

File formats: The available formats are ASCII and MATLAB.

Measurer: Jouni Hiltunen

Further information: jouni.hiltunen@joensuu.fi

References:
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Department of Computer Science
Department of Physics
University of Joensuu
Finland