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Vn on the right) were employed.[2] A filter bank may be used to decompose the individual color matching functions if more accuracy is desired.[3]

A camera or colorimeter is said to be colorimetric if it satisfies the Luther condition (de) by Robert Luther (de) (1868-1945) (also called the "Maxwell-Ives criterion"),[4] reducing observer metamerism color errors, if the product of the spectral responsivity of the photoreceptor and the spectral transmittance of the filters is a linear combination of the CMFs.[5]

A colorimeter or a digital camera with a color filter array can, under certain conditions, be used as an alternative to a spectrophotometer.[6][7]

The illuminant and observer conditions should be specified when citing a measurement (e.g. D65/10°).[8]

The quality of a colorimeter may be assessed using the means in CIE publication 179:2007.[9]

There are various calibration methods for tristimulus colorimeters.[10]
References [edit]
^ Schanda, János; George Eppeldauer, Georg Sauter (2007). "Tristimulus Color Measurement of Self-Luminous Sources". In János Schanda. Colorimetry: Understanding the CIE System. Wiley Interscience. doi:10.1002/9780470175637.ch6. ISBN 978-0-470-04904-4.
^ Hunter, Richard Sewall (September 1942). "Photoelectric tristimulus colorimetry with three filters". JOSA 32 (9): 509-538. doi:10.1364/JOSA.32.000509.
^ Eppeldauer, George (Nov/Dec 1998). "Spectral Response Based Calibration Method of Tristimulus Colorimeters" (PDF). Journal of Research of the National Institute of Standards and Technology 103 (6): 615.
^ Luther, Robert T.D. (1927). "Aus dem Gebiet der Farbreizmetrik". Zeitschrift für technische Physik 8: 540-558.
^ Ohta, Noboru; Robertson, Alan R. (2005). "Measurement and Calculation of Colorimetric Values". Colorimetry. John Wiley & Sons, Ltd. p. 154. doi:10.1002/0470094745.ch5. ISBN 978-0-470-09472-3.
^ Imai, Francisco H.; Berns, Roy S. (1999). "Spectral estimation using trichromatic digital cameras" (PDF). Proceedings of the International Symposium on Multispectral Imaging and Color Reproduction for Digital Archives 42. Retrieved 2008-05-06.
^ Solli, Martin (December 16 2004). Filter characterization in digital cameras (PDF). Retrieved 2008-05-06.
^ Sangwine, Stephen J.; Horne; Robin E. N. (1998). Th
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