Web 4.0 and virtual worlds

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Information technology - Computer graphics, image processing and environmental data representation - Extensible 3D (X3D) encodings - Part 3: Compressed binary encoding

ISO/IEC 19776-3:2015, Extensible 3D (X3D), defines a system that integrates 3D graphics and multimedia. Conceptually, each X3D file is a 3D time-based space that contains graphic and aural objects that can be dynamically modified through a variety of mechanisms. This part of ISO/IEC 19776 defines a mapping of the abstract objects in X3D to a specific X3D encoding written out in a compact binary form. Each X3D file encoded using the Compressed binary encoding:a. supports all of the purposes of X3D files defined in the X3D abstract specification ISO/IEC 19775; andb. encodes X3D constructs in a compressed binary format, taking advantage of geometric and information-theoretic compression techniques.X3D files encoded using the Compressed binary encoding may be referenced from files using other X3D encodings, and may itself reference other X3D files encoded using other X3D encodings. Sets of X3D files that use multiple encodings can only be processed by browsers that support all of the utilized X3D encodings.

ISO/IEC 19776-3:2015

Information technology - Computer graphics, image processing and environmental data representation - Extensible 3D (X3D) encodings - Part 2: Classic VRML encoding

ISO/IEC 19775-2:2015, Extensible 3D (X3D), defines a system that integrates 3D graphics and multimedia. Conceptually, each X3D file is a 3D time-based space that contains graphic and aural objects that can be dynamically modified through a variety of mechanisms. This part of ISO/IEC 19776 defines a mapping of the abstract objects in X3D to a specific encoding using the technique defined in ISO/IEC 14772 ? Virtual reality modeling language (VRML). Each Classic VRML-encoded X3D file:a. supports all of the purposes of X3D files defined in ISO/IEC 19775; andb. encodes X3D constructs in Classic VRML format.A Classic VRML-encoded X3D file may be referenced from files using other encodings and may itself reference X3D files encoded using other encodings. Such files can only be processed by browsers which conform to all of the utilized encodings.

ISO/IEC 19776-2 2015

Information technology - Computer graphics, image processing and environmental data representation - Extensible 3D (X3D) encodings - Part 1: Extensible Markup Language (XML) encoding

ISO/IEC 19775-1:2015, Extensible 3D (X3D), defines a system that integrates 3D graphics and multimedia. Conceptually, each X3D file is a 3D time-based space that contains graphic and aural objects that can be dynamically modified through a variety of mechanisms. This part of ISO/IEC 19776 defines a mapping of the abstract objects in X3D to a specific X3D encoding using the Extensible Markup Language. Each XML-encoded X3D file:a. supports all of the purposes of X3D files defined in the X3D abstract specification ISO/IEC 19775; andb. encodes X3D constructs in an XML format.An XML-encoded X3D file may be referenced from files using other X3D encodings and may itself reference other X3D files encoded using other X3D encodings. Such files can only be processed by browsers that conform to all of the utilized X3D encodings.

ISO/IEC 19776-1:2015

Information technology - Computer graphics, image processing and environmental data representation - Extensible 3D (X3D) - Part 2: Scene Access Interface

ISO/IEC 19775-2:2015 specifies a standard set of services that are made available by a browser so that an author can access the scene graph while it is running. Such access is designed to support inspection and modification of the scene graph.

ISO/IEC 19775-2:2015

SEDRIS (Synthetic Environment Data Representation and Interchange Specification) language bindings - Part 4: C

ISO/IEC 18024-4:2006 specifies a language-dependent layer for the C programming language. ISO/IEC 18023-1 specifies a language-independent application program interface (API) for SEDRIS. For integration into a programming language, the SEDRIS API is embedded in a language-dependent layer obeying the particular conventions of that language.

ISO/IEC 18023-4:2006

SEDRIS (Synthetic Environment Data Representation and Interchange Specification) - Part 3: Transmittal format binary encoding

ISO/IEC 18023-3:2006 defines a binary encoding for DRM objects specified in ISO/IEC 18023-1 according to the abstract syntax specified in ISO/IEC 18023-2.

ISO/IEC 18023-3:2006

SEDRIS (Synthetic Environment Data Representation and Interchange Specification) - Part 2: Abstract transmittal format

ISO/IEC 18023-2:2006 specifies the abstract syntax of a SEDRIS transmittal. Actual encodings (e.g. binary encoding) are specified in other parts of ISO/IEC 18023.

ISO/IEC 18023-2:2006

Information technology - Computer graphics and image processing - The Virtual Reality Modeling Language (VRML) - Part 2: External authoring interface (EAI)

ISO/IEC 14772-1, the Virtual Reality Modeling Language (VRML), defines a file format that integrates 3D graphics and multimedia. Conceptually, each VRML file is a 3D time-based space that contains graphic and aural objects that can be dynamically modified through a variety of mechanisms. This part of ISO/IEC 14772 defines the interface that applications external to the VRML browser may use to access and manipulate the objects defined in ISO/IEC 14772-1. The interface described here is designed to allow an external environment to access nodes in a VRML scene using the existing VRML event model. In this model, an eventOut of a given node can be routed to an eventIn of another node. When the eventOut generates an event, the eventIn is notified and its node processes that event. Additionally, if a script in a Script node has a reference to a given node it can send events directly to any eventIn of that node and it can read the last value sent from any of its eventOuts. The scope of this standard is to cover all forms of access to a VRML browser from external applications. It is equally valid for a database with a object interface to access a standalone browser in a presentation slide as it is for a Java applet operating within a web browser and the available services do not vary. This standard does not provide a byte level protocol description as there can be many valid ways of expressing an interaction with a browser. Instead, it represents the interface in terms of the services provided and the parameters that are passed to access these services. Individual language and protocol bindings to these services are available as annexes to this part of ISO/IEC 14772.

ISO/IEC 14772-2:2004

Recommended Practice for Ethical Assessment of Extended Reality (XR) Technologies

This standard establishes a uniform set of definitions, and a methodology to assess the socio-technical considerations and practices regarding (“XR”) Extended Reality (Augmented Reality, Virtual Reality, Immersive Web and Spatial Web technologies) where this methodology shapes the positive design of XR systems. The Standard provides the following:a) a high-level overview of the technical and socio-technical aspects of XR;b) a set of XR definitions and classifications based on existing XR research and application verticals;c) a standardized definition of ethical assessment methodologies of XR products, services and systems; andd) a high-level ethical (where "ethical" is defined as "Supporting the realization of positive values or the reduction of negative values") assessment methodology for the design of XR products, services, or systems.The applied ethical approach utilizes IEEE's Ethically Aligned Design (EAD). “Positive” is defined as the support of improved human flourishing” (or “human wellbeing and environmental flourishing.”)

IEEE P7030

Geographic information - Conceptual schema language

ISO 19103:2015 provides rules and guidelines for the use of a conceptual schema language within the context of geographic information. The chosen conceptual schema language is the Unified Modeling Language (UML). ISO 19103.2015 provides a profile of the Unified Modelling Language (UML). The standardization target type of this standard is UML schemas describing geographic information.

ISO 19103:2015

Torbjörn Lahrin

Description of Activities

Local Digital Twins will be a fundamental building block for CitiVerse. It will also play a crucial role for anyone in the public sector who wants to fully utilize the usage of AI.
Today, cities, regions and countries all over the world are building Local Digital Twins using various tools and approaches. Game engines, CAD tools, GIS, AR/VR/XR tools, Urban Digital Platforms, CIM and other visualisation tools are used. Thus a wide spread of technologies and standards. 
Interoperability for Local Digital Twins (LTD) is crucial. They need to fit horizontally and vertically. Horizontally is to put a LDT of one city next to a LDT of another city and make them align. Vertically, by example, a LDT produced by a city must fit LDT from public transportation and LDT by the energy company for the same geographical area, etc. 

European CitiVerse will be built upon Local Digital Twins. If separate Local Digital Twins in Europe don't fit together it will be impossible to create a seamless CitiVerse. It will also be difficult with interoperability between LDT:s. The LDT also needs interoperability versus dataspaces and IoT. For a LDT:s to be useful for officials and others, LDT:s need interoperability with the business operating systems used by officials on a daily basis. 

In this sense, in the framework of my fellowship, my JWG has sent a survey to many major LDT projects around the world, and we are now gathering the results and statistics.  The result will be a gap analysis and a technical report, which will enable advice to all relevant major SDO:s on how to develop or change their standards to fit better together. 

Fellow's country
Open Call Topics
Impact on SMEs (7th Open Call)
Investing in Local Digital Twins and CitiVerse is today rather challenging. All technologies for creating LDT:s or CitiVerse have their strengths and weaknesses. Any investment made today is therefore associated with a rather high degradation of uncertainty. Still, the SME:s and Europe must invest already now in these technologies to have a chance to be “on the train” and ahead in the competition. However, this also comes with a large risk that European SME:s and, in the broader scope, the European societies to some extent might find themselves investing in the “wrong” direction with techniques and methods that will not be long lasting.
To know what other actors are doing all around the world will help stakeholders to navigate and to invest in “right” directions with long term safer investments. Once we get an international reference architecture for LDT:s in place this will give even more security for those parties following the international standard.
Open Call
Organization
Lahrin i Hajstorp AB
Portrait Picture
picture
Proposal Title (7th Open Call)
GAP Analysis, Reference Architecture and Ontology for Local Digital Twins
Role in SDO
Standards Development Organisation
StandICT.eu Year
2026
Year
Topic (7th Open Call)

Torbjörn Lahrin

Description of Activities

The result of my current fellowship is a gap analysis and technical report including advice to all relevant major SDOs on how to develop or change their standards to fit better together. The JWG will also lay the foundation for producing an international reference architecture for LDT:s aligned with the international reference architectures for Digital Twins, IoT and Smart Cities among others.

Fellow's country
Open Call Topics
Open Call
Organisation type
Organization
Co-convenor representing JTC1, Lahrin i Hajstorp AB
Portrait Picture
lahrin
Proposal Title (3rd Open Call)
JWG between ISO/IEC JTC1 and IEC/SyC Smart Cities on Local Digital Twins
Standards Development Organisation
StandICT.eu Year
2026
Year
Topic (3rd Open Call)