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Munsell colors matt (AOTF measured)The reflectance spectra of 1250 matt Munsell color chips. Each spectrum consists of 61 elements that are raw data got from the output of the 12 bit A/D-converter of the AOTF color measuring equipment. All the element values should be between 0 and 4096. However there can exist some values which are larger than 4096. Those element values should be corrected to the value 4096. Furthermore there exists some noise at the blue end of spectra. This was caused by the low intensity of the illuminator at wavelengths below 420 nm. The illuminator was a standard halogen lamp and 0/0 geometry was used when the samples were measured. Measuring equipment: Acousto Optic Tunable Filter (AOTF). Wavelength interval: 400 nm - 700 nm. Wavelength resolution: 5 nm. File formats: The available formats are ASCII and MATLAB.
Measurer: University of Kuopio, Finland. Further information: haanpalo@lut.fi References:
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| Munsell colors matt (spectrofotometer measured)The reflectance spectra of 1269 matt Munsell color chips. Measuring equipment: Perkin-Elmer lambda 9 UV/VIS/NIR spectrofotometer. Wavelength interval: 380 nm - 800 nm. Wavelength resolution: 1 nm. File formats: The available formats are ASCII and MATLAB.
Measurer: jhiltu@fysnext.joensuu.fi Further information: jhiltu@fysnext.joensuu.fi and haanpalo@lut.fi
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| Munsell colors glossy (spectrofotometer measured)The reflectance spectra of 32 glossy Munsell color chips. The glossy chips contain samples from Munsell hues 5R, 7.5R, 5G and 7.5G with values changing from 5-6 and with chromas from 6-8. The spectrofotometer was calibrated by using a white plastic chip provided by the spectrofotometer manufacturer. Measuring equipment: Minolta CM-2002 spectrofotometer. Wavelength interval: 400 nm - 700 nm. Wavelength resolution: 10 nm. File formats: The available formats are ASCII and MATLAB.
Measurer: haanpalo@lut.fi Further information: haanpalo@lut.fi References:
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| Natural colorsThe reflectance spectra of 218 coloured samples collected from the nature. Samples include flowers and leaves and other colourful plants. Each spectrum consists of 61 elements that are raw data got from the output of the 12 bit A/D-converter of the AOTF color measuring equipment. All the element values should be between 0 and 4096. However there can exist some values which are larger than 4096. Those element values should be corrected to the value 4096. Measuring equipment: Acousto Optic Tunable Filter. (AOTF) Wavelength interval: 400 nm - 700 nm. Wavelength resolution: 5 nm. File formats: The currently available format is ASCII.
Measurer: Esa Koivisto, Department of Physics, University of Kuopio, Finland Further information: haanpalo@lut.fi References:
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| Forest colorsThe reflectance spectra of the needles of young (less than 40 years old) individual Scots pine and Norway spruce and the leaves of a birch. The data were collected in Finland and Sweden. Spectroradiometric measurements were made in clear weather during the growing season in June 1992. Each measurement represents the average spectrum of thousands of leaves of a growing tree. Measuring equipment: PR 713/702 AM spectroradiometer. Wavelength interval: 390 nm - 850 nm. Wavelength resolution: 5 nm. File formats: The available formats are ASCII and MATLAB.
Measurer: Ph.D. Raimo Silvennoinen, Vaisala Laboratory, University of Joensuu, Finland. Further information: haanpalo@lut.fi References:
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| Paper spectraThe reflectance spectra of coloured paper and cardboard samples. The samples were collected from various sources and there should be quite covering set of different colors. The spectra consist of measurements from single sheet of paper with black and white background and opaque pile of paper sample. Measuring equipment: Minolta CM-2002 spectrofotometer. Wavelength interval: 400 nm - 700 nm. Wavelength resolution: 10 nm. File formats: The available formats are ASCII and MATLAB.
Measurer: haanpalo@lut.fi Further information: haanpalo@lut.fi References:
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| Candy colorsThe absorbance spectra of 10 different candy dyes. The candy dyes that are measured are E131, E100, E160a, E160e, E132, E163, E120, E162, E141 and the mixture of E100 and E141. There are two different concentrations from each color. The first concentration is 5 ul/10 ml H2O and the second one is 20 ul/10 ml H2O. The absorbance spectrum of pure solvent H2O was measured first so it is possible to isolate the absorption due to dye alone by dividing the spectrum measured from dye solution by the spectrum measured from the pure solvent. Measuring equipment: Hewlet Packard 8452A Diode Array Spectrofotometer. Wavelength interval: 190 nm - 820 nm. Wavelength resolution: 2 nm. File formats: The available formats are ASCII and MATLAB.
Measurer: haanpalo@lut.fi Further information: haanpalo@lut.fi References:
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| Lumber spectraThe 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: jhiltu@fysnext.joensuu.fi Further information: jhiltu@fysnext.joensuu.fi and haanpalo@lut.fi References:
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| AGFA IT8.7/2 setThe AgfaReference The Agfa ColorReference is designed according to the IT8.7 standard.The standard defines the layout and colorimetric values of an input test target that allows any color scanner to be calibrated with any photographic medium dye set. The IT8 target was designed by the ANSI IT8 subcommittee to be used for both calibration by visual comparison and as a numerical data target. Each ColorReference consist of 288 patches, and has been designed to represent the color space from full saturation to near neutrals at highlight, midtone, and shadows.Hues falling at regular intervals through the color space represent a full spectrum gamut. A linear perception neutral density scale, and CMY and RGB color dye scales provide basic reference points to check for gray balance, tone reproduction, and color correction. Finally, a vendor-optional area containing flesh colors based on the colorimetric measurements of various skin tones plus the colors of nature completes the ColorReference. The spectral reflectance of samples were measured with Minolta spectro- photometer with option SCE (Specular component excluded). The CM-2002 utilizes d/8 (diffuse illumination/8o viewing) geometry which conforms to ISO and DIN standards (and also to CIE d/0 recommendations). Measuring equipment: Minolta spectrofotometer CM-2002. Wavelength interval: 400 nm - 700 nm. Wavelength resolution: 10 nm. File formats: The available formats are ASCII and MATLAB.
Measurer: ela@ee.oulu.fi (University of Oulu, Electrical Eng.Dept) Further information: ela@ee.oulu.fi (University of Oulu, Electrical Eng.Dept) References:
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| Daylight spectraMeasurements in different daylight illuminations. The samples that were measured are the reference white (BaSO4), spruce tree (distance from the measuring equipment about 100 meters) and the sky reflected by the mirror.Measuring equipment: PR 713/702 AM spectroradiometer Wavelength interval: 390 nm - 1070 nm Wavelength resolution: 4 nm File formats: The available formats are ASCII and MATLAB.
Measurers: Jussi Parkkinen and Pertti Silfsten (LUT) References: -
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