The CIE 1931 chromaticity diagram with the spectral colors and purple line along the rim. The corners of the triangle are the primary colors of the DCI-P3 color space. DCI-P3 D65 uses Illuminant D65 for the white point.

DCI-P3, or DCI/P3, is a common RGB color space for digital movie projection from the US-American film industry.[1] In the CIE 1931 xy chromaticity diagram the DCI-P3 color space covers 45.5% of all chromaticities and 86.9% of Pointer’s gamut. In the CIE 1976 u’v’ chromaticity diagram the coverage is 41.7% and 85.5% respectively.[2] The blue primary color is the same as sRGB and Adobe RGB;[1] the red primary color is a monochromatic light source and has a wavelength of 615 nm. DCI-P3 was defined by the Digital Cinema Initiatives (DCI) organization and published by the Society of Motion Picture and Television Engineers (SMPTE) in SMPTE EG 432-1 and SMPTE RP 431-2.[3] As a step towards the implementation of the significantly wider Rec. 2020 it is expected to see adoption in television systems and in the home cinema domain.[4]

HistoryEdit

On November 10, 2010, SMPTE published SMPTE EG 432-1:2010.[5]

On April 6, 2011, SMPTE published SMPTE RP 431-2:2011.[6]

On January 4, 2016, the UHD Alliance announced their specifications for Ultra HD Premium which requires devices to display at least 90% of the DCI P3 color space.[7][8]

In September 2015, Apple's iMac desktop became the first consumer computer with a built-in wide-gamut display, supporting the P3 color space.

In September 2016, Apple's 9.7-inch iPad Pro shipped with a display supporting P3 color.

In August 2016, the Phablet Samsung Galaxy Note 7 shipped with a wide-gamut display with P3 color gamut, but the device was discontinued in October 2016.

In September 2016, Apple's iPhone 7 shipped with a wide-gamut display, supporting P3.[9]

In October 2016, Microsoft's new Surface Studio desktop computer.

Also in October, Apple's new MacBook Pro notebook computer were released with P3 displays.

System colorimetryEdit

RGB color space parameters[10][11]
Color space White point Primary colors
xW yW xR yR xG yG xB yB
DCI-P3 D65 0.3127 0.3290 0.680 0.320 0.265 0.690 0.150 0.060
DCI-P3 Theater 0.314 0.351 0.680 0.320 0.265 0.690 0.150 0.060

DCI-P3 has a 25% larger Color Gamut than sRGB.[12]

ReferencesEdit

  1. ^ a b "Color spaces". Technicolor SA. Retrieved 2016-02-01. 
  2. ^ Kid Jansen (2014-02-19). "The Pointer's Gamut". tftcentral. Retrieved 2017-01-06. 
  3. ^ The Society of Motion Picture and Television Engineers, 2011, New York: RP 431-2, D-Cinema Quality – Reference Projector and Environment for the Display of DCDM in Review Rooms and Theaters
  4. ^ Geoffrey Morrison (2015-04-12). "Ultra HD 4K TV color, part II: The (near) future". CNET. Retrieved 2016-02-01. 
  5. ^ "EG 432-1:2010 - Digital Source Processing — Color Processing for D-Cinema". Institute of Electrical and Electronics Engineers. 2010-11-10. Retrieved 2016-02-01. 
  6. ^ "RP 431-2:2011 - D-Cinema Quality — Reference Projector and Environment". Institute of Electrical and Electronics Engineers. 2011-04-06. Retrieved 2016-02-01. 
  7. ^ "UHD Alliance Defines Premium Home Entertainment Experience". Business Wire. 2016-01-04. Retrieved 2016-02-01. 
  8. ^ Andy Vandervell (2016-01-06). "What is Ultra HD Premium? New HDR standard explained". TrustedReviews. Time Inc. UK. Retrieved 2016-09-19. 
  9. ^ Mike Wuerthele (2016-09-09). "Apple's Wide Color screen on the iPhone 7 will lead to more faithful color reproduction". AppleInsider. Retrieved 2016-09-19. 
  10. ^ Kid Jansen. "The Pointer's Gamut". TFT Central. Retrieved 2016-01-30. 
  11. ^ Rajan Joshi; Shan Liu; Gary Sullivan; Gerhard Tech; Ye-Kui Wang; Jizheng Xu; Yan Ye (2016-01-31). "HEVC Screen Content Coding Draft Text 5". JCT-VC. Retrieved 2016-01-31. 
  12. ^ Dean Jackson (2016-07-01). "Improving Color on the Web". WebKit. Retrieved 2016-09-19.