sYCC
Reference Name: sYCCDefinition: Amendment 1 to IEC 61966-2-1:1999 (similar to sYCC in PIMA 7667:2001)
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:
ICC Technical Secretary
email: [email protected]
DOCUMENTATION
Documentation source see Amendment 1 to IEC 61966-2-1:1999 and sYCC.pdf.
ENCODING CHARACTERISTICS
Color space
Type: Colorimetric luma-chroma color space
Color gamut: Extended
RGB primaries:x | y | z | |
R | 0.64 | 0.33 | 0.03 |
G | 0.30 | 0.60 | 0.10 |
B | 0.15 | 0.06 | 0.79 |
C'=-1.055 (-C)1/2.4 + 0.055 | C < -0.0031308 |
C'=12.92 C | -0.0031308 ≤ C ≤ 0.0031308 |
C'=1.055 C1/2.4-0.055 | C > 0.0031308 |
White point luminance: 80 cd/m2
White point chromaticity: x = 0.3127, y = 0.3290 (D65)
Encoding Range: linear Y: 0.0 - 1.0
Bit depth: 8 (others allowed)
Image state: Output-referred (hypothetical extended-gamut CRT)
Reference viewing environment
Image background (proximal field): 16 cd/m2
Viewing surround: 4.1 cd/m2
Ambient illuminance: 64 lux
Adapted white point luminance: Unspecified
Adapted white point chromaticity: Unspecified
Reference medium
White point luminance: 80 cd/m2
White point chromaticity: x = 0.3127, y = 0.3290 (D65)
Black point luminance: 1 cd/m2
Black point chromaticity: x = 0.3127, y = 0.3290 (D65)
HINTS FOR PROFILE MAKERS
ICC extensions: Equations defining transform to ICC PCS in sYCC.pdf
Also see Transforming via the ICC PCS for details on the derivation and use of D50 adapted data, chromatic adaptation matrix and measurement corrections.