They have adopted a majority of the terms of the Subject Codes but are not subject to its formal constraints. Therefore the Subject Codes design follows rules which are considered as constraint now: the codes use a limiting format, not more than 3 hierarchical levels are supported and this resulted into squeezing in some terms.įor that reason the further development of the Subject Codes was stopped in 2010 and a new and upgraded variant was revealed: the IPTC Media Topics. The first version of the Subject Codes was developed in the 1990s at a time of only first ideas about the Semantic Web and no common structures for taxonomies to be used with the web. The Subject Codes vocabulary is a member of the family of IPTC NewsCodes, read more about the generic features and terms of use. A less formal and more user-friendly tree-like view is also available. ImageType image gives the underlying type of values used for each pixel element in the Image or Image3D object image. The Subject Codes vocabulary can be viewed on the IPTC Controlled Vocabulary server at In addition it can be downloaded as NewsML-G2 Knowledge Item, RDF/XML or RDF/Turtle document, please read the Guidelines. IPTC is not actively maintaining the Subject Codes taxonomy, and would recommend that news organisations adopt its successor, the Media Topics vocabulary. It consists of about 1,400 terms structured into 3 levels. The Subject Codes is the original IPTC subject taxonomy, with a focus on text. Subject Codes News Categories Taxonomy for the Media: IPTC NewsCodes 2023-Q1 update, the biggest update in years 31 March 2023.IPTC publishes metadata guidance for AI-generated “synthetic media”.Google announces use of IPTC metadata for generative AI images.Midjourney and Shutterstock AI sign up to use of IPTC Digital Source Type to signal generated AI content.IPTC Spring Meeting 2023 – Generative AI, AI fact-checking, standards updates.Media Topics – IPTC’s subject vocabulary.IPTC Photo Metadata Interoperability Tests. Software that supports IPTC Photo Metadata The Subject Codes is the original IPTC subject taxonomy, with a focus on text.Quick guide to IPTC Photo Metadata on Google Images.Social Media Sites Photo Metadata Test Results 2019.Google Images and IPTC: Frequently Asked Questions.What is the IPTC Photo Metadata Standard?.Knowledge Graphs and the Semantic Web for Media.Metadata for Accessibility and Diversity.Artificial Intelligence and Machine Learning for the media.
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