The e-ILV provides free access to all the terms and definitions contained in the international standard CIE S 017:2020 ILV: International Lighting Vocabulary, 2nd edition.

To search for another term please use  "Back to the list" to return to the main page or the e-ILV.

For the complete set of terms and definitions CIE S 017:2020 can be purchased from the CIE Webshop. Members of a CIE National Committee or Associate National Committee have access to a 66,7 % discount on the purchase price of the standard.

For advice on CIE Publications contact Note the CIE Helpdesk cannot assist with technical enquiries.


colour space encoding

digital encoding of a colour space, including the specification of a digital encoding method, and an encoding range

Note 1 to entry: Multiple colour space encodings can be defined based on a single colour space where the different colour space encodings have different digital encoding methods and/or encoding ranges. (For example, 8-bit sRGB in accordance with IEC 61966-2-1 Multimedia systems and equipment – Colour measurement and management – Part 2‑1: Colour management – Default RGB colour space – sRGB and 16-bit scRGB in accordance with IEC 61966-2-2 Multimedia systems and equipment - Colour measurement and management – Part 2-2: Colour management – Extended RGB colour space – scRGB are different colour space encodings based on a particular RGB colour space.)

Note 2 to entry: A colour space encoding is defined with a number of colour channels, each channel corresponding to one dimension of the colour space. Encoded colour channel data values indicate a position along the corresponding dimension in the geometric colour space representation.

Note 3 to entry: This entry was numbered 17-227 in CIE S 017:2011.

Publication date: 2020-12
Copyright © CIE 2020. All Rights Reserverd.