ISO IEC 23091-2:2021 pdf download – Information technology — Coding- independent code points — Part 2: Video.
1 Scope This document defines various code points and fields that establish properties of a video (or still image) representation and are independent of the compression encoding and bit rate. These properties can describe the appropriate interpretation of decoded data or can, similarly, describe the characteristics of such a signal before the signal is compressed by an encoder that is suitable for compressing such an input signal. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/CIE 11664-1, Colorimetry — Part 1: CIE standard colorimetric observers 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminology databases for use in standardization at the following addresses: — ISO Online browsing platform: available at https://www.iso .org/obp — IEC Electropedia: available at https://www.electropedia .org/ 3.1 bottom field assembly of the odd-numbered rows of samples of the components (3.3) of a video frame using a numbering of rows that starts with row number 0 as the top row 3.2 chroma sample array or single sample representing one of the two colour difference signals related to the primary colours, represented by the symbols Cb and Cr Note 1 to entry: The term “chroma” is used rather than “chrominance” in order to avoid the implication of the use of linear light transfer characteristics that is often associated with “chrominance”. 3.3 component array or single sample from one of the three arrays [luma (3.4) and two chroma (3.2)] that compose a picture (3.5) in 4:2:0, 4:2:2, or 4:4:4 colour format or the array or a single sample of the array that compose a picture in monochrome format
.3 Externally defined values If the external specification permits values not defined by this document to be identified in the same field that carries values defined by this document, then that other specification shall identify how values defined herein can be distinguished from values not defined herein. 7.4 Reference format References to code points in this document should use only the code point name (i.e. a “Name” from Table 2) and specification title, and not use subclause numbers or any other “fragile” reference such as a table number. For example, for a hypothetical code point named ” ChocolateDensity “, a document can refer to ” ChocolateDensity as defined in ISO/IEC 23091-2″. 7.5 Uniform resource name format ISO/IEC 23091-1 specifies a uniform resource name format that may be used for the code points specified in this document.
ISO IEC 23091-2:2021 pdf download – Information technology — Coding- independent code points — Part 2: Video
