DCI-P3

Diagram of the CIE 1931 color space that shows the DCI-P3 color space in the triangle and the location of the primary colors. DCI-P3 D65 uses Illuminant D65 for the white point.

DCI-P3, or DCI/P3, is a common color space for digital movie projection from the US-American film industry.[1] It covers most of the range of naturally occurring surface colors (after Michael R. Pointer, 1980;[2] 85.5% in CIE 1931, 86.9% in CIE 1976 u’v’) with the most distinct drawbacks in the green-blue range. The covered area in the range of colors perceptible for humans (CIE 1931: 45.5%, CIE 1976: 41.7%) is equally great in the CIE 1931 color space as with the Adobe RGB color space (45.2%, 38.7%), albeit slightly shifted towards red.[3] 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.[4] 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.[5] On March 31, 2016 Apple Inc. became the first consumer electronics company to produce Prosumer user category.[6]

History

On November 10, 2010, SMPTE published SMPTE EG 432-1:2010.[7]

On April 6, 2011, SMPTE published SMPTE RP 431-2:2011.[8]

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.[9]

On March 31, 2016, Apple Inc. released the 9.7" iPad Pro, the first ever tablet to have dual color gamuts including the DCI-P3 Wide Color Gamut and the sRGB / Rec.709 for most content and needed for accurate color reproduction. This is thought to be the standard for all upcoming releases of Apple Products featuring a Retina Display and the next generation ambient-light sensor that has a second role in detecting the color temperature of the light hitting the screen. This coincided with the integration of the Apple A9X SoC with the Apple M9 Motion Coprocessor on die.[10] DCI-P3 has a 26% larger Color Gamut than that which is used in 4K UHD TVs and in Digital Cinema Projectors.[6]

System colorimetry

RGB color space parameters[11][12]
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

References

  1. 1 2 "Color spaces". Technicolor SA. Retrieved 2016-02-01.
  2. ↑ Michael R. Pointer (1980-09-01). "The Gamut of Real Surface Colours" 5 (3). Color Research & Application: 145–155. doi:10.1002/col.5080050308. ISSN 1520-6378. Retrieved 2016-02-01.
  3. ↑ Jeff Yurek (2013-07-23). "How much color gamut do displays really need? Part 3: Existing color gamut standards". dot color. Retrieved 2016-02-01.
  4. ↑ 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
  5. ↑ Geoffrey Morrison (2015-04-12). "Ultra HD 4K TV color, part II: The (near) future". CNET. Retrieved 2016-02-01.
  6. 1 2 "iPad Pro 9.7" Display Technology Shoot-Out". www.displaymate.com. Retrieved 2016-04-14.
  7. ↑ "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.
  8. ↑ "RP 431-2:2011 - D-Cinema Quality — Reference Projector and Environment". Institute of Electrical and Electronics Engineers. 2011-04-06. Retrieved 2016-02-01.
  9. ↑ "UHD Alliance Defines Premium Home Entertainment Experience". Business Wire. 2016-01-04. Retrieved 2016-02-01.
  10. ↑ "iPad Pro - Technical Specifications". Apple. Retrieved 2016-04-14.
  11. ↑ Kid Jansen. "The Pointer's Gamut". TFT Central. Retrieved 2016-01-30.
  12. ↑ 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.

External links

This article is issued from Wikipedia - version of the Friday, April 15, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.