Movatterモバイル変換

[0]ホーム
URL:

Jump to content
WikipediaThe Free Encyclopedia
Search

Tristimulus colorimeter

From Wikipedia, the free encyclopedia
(Redirected fromScreen calibration tool)
Device to measure color values
For other uses, seeColorimeter.
Color calibration of a monitor using ColorHug2, an open-source colorimeter, placed on the screen

Atristimulus colorimeter, colloquially shortened tocolorimeter orcolourimeter, is used indigital imaging to profile and calibrate output devices.It takes a limited number of wideband spectral energy readings along thevisible spectrum by usingfilteredphotodetectors; 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 whosetransmittance spectra mimicked theCIEcolor matching functions (shown below) were employed.[3] Afilter bank may be used to decompose the individual color matching functions if more accuracy is desired.[4]

A camera or colorimeter is said to becolorimetric if it satisfies theLuther condition [de] byRobert Luther [de] (1868–1945) (also called the "Maxwell–Ives criterion"),[5] reducingobserver metamerism color errors, if the product of the spectral responsivity of the photoreceptor and the spectral transmittance of the filters is alinear combination of the CMFs.[6]

A colorimeter or a digital camera with acolor filter array can, under certain conditions, be used as an alternative to aspectrophotometer.[7][8]

Theilluminant andobserver 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]

  • Color sensor of a colorimeter
    Color sensor of a colorimeter
  • The CIE 1931 XYZ color matching functions
    TheCIE 1931 XYZ color matching functions

References

[edit]
  1. ^Schanda, János; George Eppeldauer; Georg Sauter (2007). "Tristimulus Color Measurement of Self-Luminous Sources". In János Schanda (ed.).Colorimetry: Understanding the CIE System.Wiley Interscience.doi:10.1002/9780470175637.ch6.ISBN 978-0-470-04904-4.
  2. ^Zharinov I.O., Zharinov O.O. (2015)."Method of software-based compensation of technological variation in chromaticity coordinates of LCD panels".Scientific and Technical Journal of Information Technologies, Mechanics and Optics.15 (3):387–397.doi:10.17586/2226-1494-2015-15-3-387-397.
  3. ^Hunter, Richard Sewall (September 1942)."Photoelectric tristimulus colorimetry with three filters".JOSA.32 (9):509–538.doi:10.1364/JOSA.32.000509.hdl:2027/mdp.39015077308396.
  4. ^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):615–619.doi:10.6028/jres.103.040.PMC 4890952.PMID 28009362.
  5. ^Luther, Robert T.D.[in German] (1927). "Aus dem Gebiet der Farbreizmetrik".Zeitschrift für technische Physik.8:540–558.
  6. ^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.
  7. ^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. Retrieved2008-05-06.
  8. ^Solli, Martin (16 December 2004).Filter characterization in digital cameras(PDF) (Thesis). Retrieved2008-05-06.
  9. ^Sangwine, Stephen J.; Horne; Robin E. N. (1998).The Colour Image Processing Handbook.Springer. p. 41.ISBN 0-412-80620-7.
  10. ^CIE TC 2-16 "Characterization of the Performance of Tristimulus Colorimeters" (2007).Methods for characterising tristimulus colorimeters for measuring the colour of light. Publication 179:2007. Vienna: CIE Central Bureau.ISBN 978-3-901906-60-2.{{cite book}}: CS1 maint: numeric names: authors list (link)
  11. ^Gardner, James L. (May–June 2007)."Comparison of Calibration Methods for Tristimulus Colorimeters"(PDF).Journal of Research of the National Institute of Standards and Technology.112 (3):129–138.doi:10.6028/jres.112.010.PMC 4656001.PMID 27110460. Archived fromthe original(PDF) on 2008-05-28.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Tristimulus_colorimeter&oldid=1227136954"
Categories:
Hidden categories:
[8]ページ先頭
©2009-2026 Movatter.jp