eciRGB

Reference Name: eciRGB (2008)

Definition: ISO 22028-4.2

Responsible Organization: International Standard defining this colour encoding published by IEC, Geneva (document available through National Standards Bodies). Characterisation data derived from this was defined by ICC.

Contact Information: ECI Chairman email: Olaf Druemmer

DOCUMENTATION

Documentation source see ISO 22028-4.2

ENCODING CHARACTERISTICS

Color space

Type: Colorimetric RGB color space

Color gamut: Extended

RGB primaries:

        x      y      z
  R   0.67   0.33   0.0
  G   0.21   0.71   0.08
  B   0.14   0.08   0.78

Color component transfer function: Linear

C'=1.16 C^1/3 - 0.16 C ≥ 0.008856 C'=9.033 C C < 0.008856

White point luminance: 160 cd/m²

White point chromaticity: x = 0.3457, y = 0.3585 (D50)

Encoding Range: linear RGB: 0.0 to 1.0

Bit depth per component:

• integer encoding: 8 or 16 bits
• floating point encoding: 32 bits if defined by file format, otherwise according to IEEE 754-1985

Image state: Output-referred

Reference viewing environment

Image background (proximal field): 32 cd/m²

Viewing surround: 2.0 cd/m²

Ambient illuminance: 32 lux

Adapted white point luminance: 160 cd/m²

Adapted white point chromaticity: x = 0.3457, y = 0.3585 (D50)

Reference medium

White point luminance: 160 cd/m²

White point chromaticity: x = 0.3457, y = 0.3585 (D50)

Black point luminance: 0.5 cd/m²

Black point chromaticity: x = 0.3457, y = 0.3585 (D50)

PROFILE

A profile for eciRGB (2008) is available from ECI