A tristimulus colorimeter, colloquially shortened to colorimeter, is used in digital imaging to profile and calibrate output devices. It takes a limited number of wideband spectral energy readings along the visible spectrum by using filtered photodetectors; e.g. silicon photodiodes. [1]
A colorimeter with the known value of absolute error allows measuring (x,y)-chromaticity coordinates in red, green, blue and white colors. Measured values are used for calculation of LCD profile coefficients. [2]
Originally, three glass filters whose transmittance spectra mimicked the CIE color matching functions (shown below) were employed. [3] A filter bank may be used to decompose the individual color matching functions if more accuracy is desired. [4]
A camera or colorimeter is said to be colorimetric if it satisfies the Luther condition by Robert Luther (1868–1945) (also called the " Maxwell– Ives criterion"), [5] 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. [6]
A colorimeter or a digital camera with a color filter array can, under certain conditions, be used as an alternative to a spectrophotometer. [7] [8]
The illuminant and observer conditions should be specified when citing a measurement (e.g. D65/10°). [9]
The quality of a colorimeter may be assessed using the means in CIE publication 179:2007. [10]
There are various calibration methods for tristimulus colorimeters. [11]
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cite book}}
: CS1 maint: numeric names: authors list (
link)
A tristimulus colorimeter, colloquially shortened to colorimeter, is used in digital imaging to profile and calibrate output devices. It takes a limited number of wideband spectral energy readings along the visible spectrum by using filtered photodetectors; e.g. silicon photodiodes. [1]
A colorimeter with the known value of absolute error allows measuring (x,y)-chromaticity coordinates in red, green, blue and white colors. Measured values are used for calculation of LCD profile coefficients. [2]
Originally, three glass filters whose transmittance spectra mimicked the CIE color matching functions (shown below) were employed. [3] A filter bank may be used to decompose the individual color matching functions if more accuracy is desired. [4]
A camera or colorimeter is said to be colorimetric if it satisfies the Luther condition by Robert Luther (1868–1945) (also called the " Maxwell– Ives criterion"), [5] 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. [6]
A colorimeter or a digital camera with a color filter array can, under certain conditions, be used as an alternative to a spectrophotometer. [7] [8]
The illuminant and observer conditions should be specified when citing a measurement (e.g. D65/10°). [9]
The quality of a colorimeter may be assessed using the means in CIE publication 179:2007. [10]
There are various calibration methods for tristimulus colorimeters. [11]
{{
cite book}}
: CS1 maint: numeric names: authors list (
link)