International Color Consortium
Members
Getting Started
V4
iccMAX
Making color seamles between devices and documents
ICC Specifications
Technical Notes
ICC Resource Center
ICC Slide Presentation
ICC Logos
Information on Profiles
ICC White Papers
Color Management Links
Member List
ICC Working Groups
FAQ
Forum
Home
Search ICC:
 
Got a question about ICC Profiles or colour management?

BT.709

Reference Name: ITU-R BT.709

Definition: ITU-R BT.709-6: Parameter values for the HDTV standards for production and international programme exchange

Responsible Organization: International Telecommunication Union

Contact Information:
ICC Technical Secretary
email: green@colourspace.demon.co.uk


DOCUMENTATION

Documentation source ITU Recommendation BT.709-6 (06/2015)


ENCODING CHARACTERISTICS

Color space

Type: Colorimetric RGB color space

Color gamut: CRT-based (ITU-R BT.709-3)

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

Color component transfer function: 2.4 gamma

White point luminance: 100 cd/m2

White point chromaticity: x = 0.3127, y = 0.3290 (D65)

Encoding

Range: linear RGB; see ITU-R BT.709-3 for details of black and nominal peak white quantization levels for 8 and 10-bit encodings

Bit depth: 8 or 10

Image state: Output-referred display


PROFILES

A profile for the Rec. 709-5 Reference Display is here


HINTS FOR PROFILE MAKERS

See Transforming via the ICC PCS for details on the derivation and use of D50 adapted data, chromatic adaptation matrix and measurement corrections.