ISO/IEC JTC 1/SC 24 was formed in 1987 from ISO/TC 97 as a result of Resolution 21 at the ISO/IEC JTC 1 plenary. The group's origins began in computer graphics, the standardization of which was originally under ISO/IEC JTC 1/SC 21/WG 2. However, when ISO/IEC JTC 1/SC 24 was created, the standardization activity of ISO/IEC JTC 1/SC 21/WG 2 was carried over to the new subcommittee.[3] The initial five working groups of ISO/IEC JTC 1/SC 24 were titled, “Architecture,” “Application programming interfaces,” “Metafiles and interfaces,” “Language bindings,” and “Validation, testing and registration.” The work of ISO/IEC JTC 1/SC 24 began with the Graphical Kernel System (GKS), which was adopted from ISO/IEC JTC 1/SC 21/WG 2. However, since GKS only addressed 2D functionality, attention turned to the standardization of 3D functionality. This resulted in two standards being published: GKS-3D in 1988 and PHIGS in 1989, both of which addressed 3D functionality.[4] Since 1991, ISO/IEC JTC 1/SC 24 has held plenaries in a number of countries, including the Netherlands, Germany, United States, France, Canada, Japan, Sweden, Korea, United Kingdom, Australia, and Czech Republic.[4]
Scope
The scope of ISO/IEC JTC 1/SC 24 is the “Standardization of interfaces for information technology based applications relating to”:[2][5][6][7]
Computer graphics
Image processing
Environmental data representation
Support for the Mixed and Augmented Reality (MAR)
Interaction with, and visual representation of, information
Included are the following related areas:
Modeling and simulation and related reference models
Virtual reality with accompanying augmented reality/augmented virtuality aspects and related reference models
Application program interfaces
Functional specifications
Representation models
Interchange formats, encodings and their specifications, including metafiles
Device interfaces
Testing methods
Registration procedures
Presentation and support for creation of multimedia, hypermedia, and mixed reality documents
Excluded are the following areas:
Character and image coding
Coding of multimedia, hypermedia, and mixed reality document interchange formats
JTC 1 work in user system interfaces and document presentation
ISO/TC 207 work on ISO 14000 environment management, ISO/TC 211 work on geographic information and geomatics
Software environments as described by ISO/IEC JTC 1/SC 22
Structure
ISO/IEC JTC 1/SC 24 is made up of four active working groups, each of which carries out specific tasks in standards development within the field of computer graphics, image processing and environmental data representation, together with ITU-T Study Group 16. As a response to changing standardization needs, working groups of ISO/IEC JTC 1/SC 24 can be disbanded if their area of work is no longer applicable, or established if new working areas arise. The focus of each working group is described in the group's terms of reference. Active working groups of ISO/IEC JTC 1/SC 24 are:[2][5][8][9]
Working Group
Working Area
ISO/IEC JTC 1/SC 24/WG 6
Augmented reality continuum presentation and interchange
ISO/IEC JTC 1/SC 24/WG 7
Image processing and interchange
ISO/IEC JTC 1/SC 24/WG 8
Environmental representation
ISO/IEC JTC 1/SC 24/WG 9
Augmented reality continuum concepts and reference model
ISO/IEC JTC 1/SC 24 works in close collaboration with a number of other organizations or subcommittees, both internal and external to ISO or IEC, in order to avoid conflicting or duplicative work. Organizations internal to ISO or IEC that collaborate with or are in liaison to ISO/IEC JTC 1/SC 24 include:[2][5][11][12][13]
Countries pay a fee to ISO to be members of subcommittees.[14]
The 10 "P" (participating) members of ISO/IEC JTC 1/SC 24 are: Australia, China, Egypt, France, Japan, Republic of Korea, Portugal, Russian Federation, United Kingdom, and United States.[1]
The 23 "O" (observer) members of ISO/IEC JTC 1/SC 24 are: Argentina, Austria, Belgium, Bosnia and Herzegovina, Bulgaria, Canada, Cuba, Czech Republic, Finland, Ghana, Hungary, Iceland, India, Indonesia, Islamic Republic of Iran, Italy, Kazakhstan, Malaysia, Poland, Romania, Serbia, Slovakia, Switzerland, and Thailand.[15]
Published standards
ISO/IEC JTC 1/SC 24 currently has 80 published standards under their direct responsibility within the field of computer graphics, image processing, and environmental data representation, including:[2][5][16][17][18][19]
Information technology – Computer graphics – Computer Graphics Reference Model
Published (1992)
Defines a set of concepts and their inter-relationships, which should be applicable to the complete range of future computer graphics standards[20]
ISO/IEC 7942-1
Information technology – Computer graphics and image processing – Graphical Kernel System (GKS) – Part 1: Functional description
Published (1994)
“Specifies a set of functions for computer graphics programming, Graphical Kernel System. Provides functions for two dimensional graphical output, the storage and dynamic modification of pictures, and operator input.”[21][9]
Information technology – Computer graphics and image processing – Programmer's Hierarchical Interactive Graphics System (PHIGS) – Part 1: Functional description[23]
Published (1997)
Specifies a set of functions for computer graphics programming, PHIGS, which is a graphics system for application programs that produce computer generated pictures on output devices[9][24][25]
Information technology – Computer graphics – Metafile for the storage and transfer of picture description information – Part 1: Functional specification
Published (1999)
Provides a file format that is suitable for the storage and retrieval of picture description information; consists of an ordered set of elements that may be used to describe pictures in a way that is compatible between systems of different architectures, compatible with devices of differing capabilities and design, and meaningful to application constituencies.[27]
6 (Maintenance)
ISO/IEC 14772-1
Information technology – Computer graphics and image processing – The Virtual Reality Modeling Language (VRML) – Part 1: Functional specification and UTF-8 encoding[28]
Published (1997)
Defines a file format that integrates 3D graphics and multimedia[29]
Information technology – Computer graphics and image processing – Humanoid Animation (H-Anim)
Published (2006)
Specifies the structure and parametrization of articulable humanoid characters[31]
6
ISO/IEC 19775-1
Information technology – Computer graphics, image processing and environmental data representation – Extensible 3D (X3D) – Part 1: Architecture and base components
Published (2013)
Specifies the abstract functionality of X3D including base functionality and forty-one components; not only includes functionality, but also specifies support layers for each component and profiles that collect component support layers as needed for specific vertical applications[32]
6
ISO/IEC 19775-2
Information technology – Computer graphics and image processing – Extensible 3D (X3D) – Part 2: Scene access interface (SAI)
Published (2010)
Specifies a set of services that allow internal or external code to interact with an X3D scene graph; internal interactions occur using the X3D Script node, while external applications interact through function calls[33]
6
ISO/IEC 19776-1
Information technology – Computer graphics, image processing and environmental data representation – Extensible 3D (X3D) encodings – Part 1: Extensible Markup Language (XML) encoding
Published (2009)
Specifies XML encoding for the X3D scene graph[34]
6
ISO/IEC 19776-2
Information technology – Computer graphics, image processing and environmental data representation – Extensible 3D (X3D) encodings – Part 2: Classic VRML encoding
Published (2008)
Specifies an encoding of X3D scene graphs that uses the technique used for VRML[35]
6
ISO/IEC 19776-3
Information technology – Computer graphics, image processing and environmental data representation – Extensible 3D (X3D) encodings – Part 3: Compressed binary encoding
Published (2011)
Specifies a FasInfoSet-based binary encoding of the X3D scene graph[36]
6
ISO/IEC 19777-1
Information technology – Computer graphics and image processing – Extensible 3D (X3D) language bindings – Part 1: ECMAScript
Published (2006)
Specifies a language-dependent layer, in which the X3D abstract interfaces are embedded in, for the ECMAScript language[37]
6
ISO/IEC 19777-2
Information technology – Computer graphics and image processing – Extensible 3D (X3D) language bindings – Part 2: Java
Published (2006)
Specifies a language-dependent layer in which the X3D abstract interfaces are embedded in, for the Java language[38]
6
ISO/IEC 12087-1
Information technology – Computer graphics and image processing – Image Processing and Interchange (IPI) – Functional specification – Part 1: Common architecture for imaging
Published (1995)
Defines a generic, unifying imaging architecture and those specializations and delineations of the generic imaging architecture required to support IPI-PIKS and IPI-IIF[39]
7
ISO/IEC 12087-2
Information technology – Computer graphics and image processing – image processing and interchange (IPI) – Functional specification – Part 2: Programmer's imaging kernel system application programme interface
Published (1994)
Programmer's Imaging Kernel System (PIKS) provides a rich set of application program interfaces (APIs) for image processing services on image and image-derived data objects[40]
Information technology – Computer graphics and image processing—Image Processing and Interchange (IPI) – Functional specification – Part 3: Image Interchange Facility (IIF)
Published (1995); Amended (1996)
Defines the image interchanging functions and is used as a reference for imaging applications environments or among imaging devices
7
ISO/IEC 12087-5
Information technology – Computer graphics and image processing – Image Processing and Interchange (IPI) – Functional specification – Part 5: Basic Image Interchange Format (BIIF)[9]
Published (1998)
Provides a foundation for interoperability in the interchange of imagery and imagery-related data among applications such as JPEG 2000 and the CGM format[42]
Information Technology – Computer graphics, image processing and environmental data representation – Procedure for registration of items
Published (1994); Amended (2013)
Specifies the procedures to be followed in preparing, maintaining and publishing a registrar of identifiers and meaning that, under the direction of ISO/IEC JTC 1/SC 24, are assigned to graphical items[44]
Information technology – Environmental Data Coding Specification (EDCS)
Published (2005)
Establishes the mechanisms to ensure that environmental information is:[47]
unambiguously defined
flexibly denoted and encoded, and
easily bound in exchange format and to programming languages
8
ISO/IEC 18026
Information technology – Spatial Reference Model (SRM)
Published (2009)
Supports unambiguous specification of the positions, directions, distances and times associated with spatial information; defines an algorithm for the precise transformation positions, directions and distances among different spatial reference frames[48]
8
ISO/IEC 18041-4
Information technology – Computer graphics, image processing and environmental data representation – Environmental Data Coding Specification (EDCS) language bindings – Part 4: C