MPEG and JPEG as SCs proposal

1.    Proponents

W. Bailer and C, Timmerer (AT); G. Lafruit (BE); B. Zatt (BR); C. Alberti and M. Mattavelli (CH); T. Huang and L. Yu (CN); J. Ostermann (DE); J. Delgado and F. Morán Burgos (ES); M. Preda and F. Prêteux (FR); L. Chiariglione, D. Gibellino and D. Giusto (IT); E.S. Jang and K. Kim (KR); M. Raad (LB); R. Mekuria (NL); M. Domanski (PL); J. Samuelsson (SE); R. Yu (SG); A. Benjelloun Touimi, P. Kudumakis, K. McCann and P. Ribeca (UK); and A. Luthra and X. Wang (US)

2      Design Goals

  1. Revitalise the 27-year old SC 29 structure by taking into account:
  • The major and independent expansion of work and membership of its WGs;
  • The adequacy of the current SC 29 organisation for the two mostly autonomous WGs;
  • The risks involved in restructuring SC 29 with untested organisations;
  • The need to retain the key success factors of SC 29 and of its two working groups;The opportunity to inject market awareness to increase the success of WG 11 standards;

2. Maintain WG 1’s and WG 11’s momentum, ensure their capability to continue serving their individual constituencies’ needs and guarantee continuity of operation of current projects;

3. Better withstand market fragmentation in the area of efficient delivery of moving pictures and audio.

3      Proposal

  1. WG 1 becomes SC 29 with the title “JPEG Coding of digital representations of images” and a scope compatible with the one approved by the SC 29 CIB ballot;
  2. WG 11 becomes a JTC 1 SC (SC 4x) with the title “MPEG compression and delivery of Moving Pictures, Audio and Other Data”, and a scope compatible with the one approved by the SC 29 CIB ballot;
  3. Both SC 29 and SC 4x retain existing collaborations with ITU-T and their collaborative stance with other committees/bodies, e.g. by setting up joint working groups (JWG);
  4. SC 4x may create, in addition to genomics, WGs/JWGs for compression of other types of data than media with relevant committees, building on WG 11’s common tool set;
  5. As required by the ISO/IEC directives, ITNB is willing to take the SC 4x Secretariat. If selected by JTC 1, ITNB is willing to make the following steps to expedite a smooth transition of the large WG 11 work plan to SC 4x:
  • Nominate the WG 11 convenor as SC 4x chair;
  • Nominate an “SC 4x chair elect” from a country other than Italy using criteria of 1) continuity of WG 11’s vision and strategy, 2) full understanding of the scope of SC 4x and 3) record of performance in the currently held position;
  • Call for nominations of convenors of SC 4x working groups (WG). We nominate current subgroup chairs as convenors of the respective WGs;\

6. WG 1 Subgroups (SG) become Advisory Groups (AG) or Working Groups (WG) of SC 29;

7. WG 11 SGs become AGs or WG of SC 4x with the addition of a Market need AG.

4      Benefits of the proposal

  1. It has a positive impact on the heavy load of WG 1 and WG 11 work plans:
    • It supports and enhances WG1 work plan, as SC 29 elevates WG 1 SGs to WGs, ret­aining its proven modus operandi and relationships with client industries in scope;
    • It supports and enhances WG 11 work plan, as WG11 is moved to SC 4x, retaining its proven structure, modus operandi and relationships with client industries in scope;
  2. It preserves and builds upon the established MPEG and JPEG brands;
  3. It retains and improves all features of WG 11 success, in particular its structure and modus operan­di: col­located meetings, joint physical meetings, inter-group synergies, ad hoc groups, teleconf­er­encing, collaborations, IVPs, specific IT support to standards development etc.;
  4. It enhances WG 1’s and WG 11’s collaboration stance with other committees via Joint Working Groups;
  5. It improves WG 11’s supplier-client relationship with its client industries with its new status;
  6. It adds formal governance to the well-honed WG 1 and WG 11 structures;
  7. It balances continuity and renewal of WG 11 leadership at all levels;
  8. It formalises WG 1’s and WG 11’s high-profile standard reference roles for the image and video sectors, respectively;
  9. It uses the precedent of SC 2 releasing WG 8 to become SC 29 for WG 11.

5      Full proposal

1. Motivations

  1. For many years WG 1 has provided standards to operate and innovate the imaging industry;
  2. For many years WG 11 has provided standards to operate and innovate the broadcast, broadband, mobile and physical distribution industries, and has become their reference committee;
  3. The needs of the reference industries for more standards continue to evolve and grow causing a sustained increase in WG 11 members attending (currently 600);
  4. WG 1 and WG 11 have a track record of widely deployed standards developed for and in collaboration with other committees that require a more appropriate level of liaison;
  5. WG 1 and WG 11 operate as virtual subcommittees, each with a structure of interacting subgroups covering the required areas of expertise, including a strategic planning function, and universally recognised strong brands that must be preserved unfettered and enhanced;

In conclusion, the breadth of scope, relevance of standards to the industry, size and structure demand that WG 1 become SC 29 and WG 11 be elevated to a JTC 1 Subcommittee (SC 4x).

2. SC 4x title and scope

Upon approval by JTC 1 and ratification by the TMB, SC 4x will assume the following

  1. Title: MPEG compression and delivery of moving pictures, audio and other data;
  2. Scope (equivalent to the scope of WG 11 approved by the SC 29 CIB): Standardisation in the area of efficient delivery of moving pictures and audio, their descriptions and other data
    • Serve as the focus and proponent for JTC 1’s standardisation program for broadcast, broadband, mobile and physical distribution based on analysis, compression, transport and consumption of digital moving pictures and audio, including conventional and immersive, generated or captured by any technology;
    • Serve as the focus and co-proponent for JTC 1’s standardisation program on efficient storage, processing and delivery of genomic and other data, in agreement and collaboration with the relevant committees.

Excluded: subject matter covered under the scope and existing work programs of JTC 1/SC 29 (as effective after creation of SC 4x) and SC 2.

3. Transfer of work and responsibilities

  1. Responsibility for all standards already developed and being developed by WG 11 is transferred to SC 4x;
  2. All projects currently carried out by WG 11 are transferred to SC 4x;
  3. All current WG 11 liaisons are transferred to SC 4x;
  4. Current SC 29 agreements with ITU-T SG16 on video coding (JCT-VC and JVET) are assigned to SC 4x in lieu of SC 29.

4. SC 4x structure

  1. WG 11 subgroups become:
  2. SC 4x Advisory Groups (AG) – do not produce standards;
  3. SC 4x Working Groups (WG) – produce standards;
  4. Minor adjustments to WG 11 subgroup structure made to strengthen productivity:
  • New Market needs AG to enhance alignment of standards with market needs (to be installed at an appropriate time after establishment of SC 4x);
  • Genome Coding moves from a Requirements activity to WG level;
    1. SC 4x retains WG 11’s collaborative stance with other committees/bodies, e.g. Collaborative Teams with ITU-T on Video Coding and Joint Working Groups with ISO/IEC committees to carry out commonly agreed projects;

5. SC 4x organisational chart

Joint Working Groups (JWG) may be established if the need for common standards with other ISO/IEC committees is identified.

SC 4x will constantly monitor the state of standards development and adapt its structure accor­ding­ly, including by establishing new WGs, e.g. on standards for other data types.

6. SC 4x secretariat

  1. As required by the ISO/IEC directives, ITNB is willing to assume the SC 4x Secretariat (see SC 29 N18149);
  2. To expedite a smooth transition of the large WG 11 work plan to SC 4x, ITNB will, if selected by JTC 1:
  3. Nominate the WG 11 convenor as SC 4x chair;
  4. Nominate an “SC 4x chair elect” from a country other than Italy based on criteria of
    • Continuity of WG 11’s vision and strategy;
    • Full mastering of the scope of SC 4x;
    • Record of performance in the currently held position;
  5. Call for nominations of convenors. Proponents of MPEG and JPEG as SCs will nominate the current subgroup rapporteurs, including the leader of the Genomic Coding activity in Requirements;
  6. Call for nominations of convenors for
    • Technical Coordination;
    • Market Needs;
    • One position left open by chair elect;
  7. In the future ITNB will nominate future SC 4x chairs from proposals coming inside SC 4x (e.g. 3 candidates recommended by chair and convenors)

The proponents invite other National Bodies, besides Italy and China, to express their interest in taking the SC 4x secretariat.

7. SC 4x meetings

  1. For the time being, to effectively pursue its standardisation goals, SC 4x will continue its practice of quarterly meetings collocated with its AGs and WGs (same time/place) organised as an “SC 4x week” as follows
Day Time Meeting Chaired by
Sunday 14-16 SC 4x plenary Chair
Monday 09-13 Extended SC 4x plenary to review AhG reports and plan for the week Chair elect
Wednesday 09-11 Extended SC 4x plenary to review work done so far by AGs/WGs and plan for the rest of the week Chair elect with Tech. Coord. AG Convenor
Friday 14-17 Extended SC 4x plenary to review and approve recommend­ations produced by AGs/WGs Chair
Friday 17-18 Plenary to act on matters requiring SC 4x intervention Chair

 

It should be noted that the structure of the “MPEG week” remains unchanged. Extended plenaries are joint meetings of all WGs/AGs. SC 4x plenaries are held on the Sunday before and during an hour after the extended plenary on Friday to deal with matters such as liaisons, meeting schedules etc that used to be handled by WG 11 plenaries.

  1. WGs and AGs could have longer meeting durations (i.e. start before first SC 4x meeting);
  2. Carry out a thorough review of all details of meeting sessions, agendas, document regis­tration etc. with the involvement of all affected experts;
  3. Institut Mines Télécom’s unique services offered for the last 15 years would be warmly welcome to preserve and continually improve SC 4x’s operating efficiency with the involvement of all WG/AG members.

9. SC 29 title and scope

(the following is a first attempt at defining the SC 29 title and scope after creation of SC 4x)

Upon approval by JTC 1, SC 29 will change its title and scope as follows:

  1. Title: JPEG coding of digital representations of images
  2. Scope: Development of international standards for
  • Efficient digital representations, processing and interchange of conventional and immersive images
  • Efficient digital representations of image-related sensory and digital data, such as medical and satellite
  • Support to digital image coding applications
  • Maintenance of ISO/IEC 13522

Excluded: subject matter covered under the scope and existing work programs of JTC 1/SC 4x

10. SC 29 structure

WG 11 subgroups become:

  1. SC 4x Advisory Groups (AG) – do not produce standards;
  2. SC 4x Working Groups (WG) – produce standards;
    1. SC 29 may set up Joint Working Groups, e.g. with SC 4x and TC 42, to carry out commonly agreed projects;

11. SC 29 organisational chart

(the following is a first attempt at defining the SC 29 structure after creation of SC 4x, using the current SG structure of WG 1)

  1. SC 29 secretariat: JPNB will continue to hold the SC 29 secretariat (as declared by Committee Manager);
  2. SC 29 meetings: similar organisation as currently done by WG 1.

12. MPEG and JPEG coding

In a moving picture codec such as in MPEG codecs, the still picture coding mode is a mode of the moving picture coding scheme. The tools for the still picture coding mode are a subset of the tools of the moving picture coding scheme.

However, no need or significant benefit has ever been found that justifies the adoption of an image compression standard, such as JPEG, as the still picture coding mode of a moving picture coding scheme, such as MPEG.

6      Analysis of proposal versus common criteria

  1. Brands

How does the proposal leverage and enhance the JPEG and MPEG brands?

The JPEG and MPEG brands have high and independent visibility. By proposing that WG 1 and WG 11 become independent SCs each of the two brands will keep a clear identity associated to independent organ­isational entities, both at Subcommittee level.

The MPEG and JPEG as SCs proposal complies with the following consensus statement of the report:

  • “Having great recognition and reputation, the MPEG and JPEG brands should be preserved and continue to be enhanced”.
  1. Synergies between WG 1 and WG 11

How does the proposal cater for synergies between WG 1 and WG 11?

SC 29/WG 11 has collaborated with WG 1 in two forms

  • By providing basic technologies, e.g. ISO/IEC 14496-12 ISO Based Media File Format and ISO/IEC 15938-12 MPEG Query Format, on top of which SC 29/WG 1 has built/is building new functionalities in its standards;
  • By developing specific amendments to its standards, e.g. ISO/IEC 13818-1 Systems to enable carriage of ISO/IEC 15444 JPEG 2000 and ISO/IEC 21122 JPEG XS image sequences on MPEG-2 transport.

SC 4x will continue supporting SC 29 with its technologies and stan­dards whenever requested.

There have been specific instances where the two WGs have collab­orated on creating a small number of specific standards, as noted above. However, there has not been a need for them to be frequent and recurrent and there is no reason to believe that the situation will chan­ge based on the current roadmaps of WG 1 and WG 11.

If such needs arise, however, it will be possible to set up focussed collaboration on standards of common interest via Joint Working Groups. WG 11 has successfully applied the following preliminary steps in its collaboration with SC 24 that led to the common ISO/IEC 18039 Mixed and Augmented Reality Reference Model standard:

  • Verify the joint industrial interest in a common work area
  • Define requirements of a potential common standard
  • Agree on a work plan and timeline of the JWG
  • Draft the JWG Terms of Reference for common area.

We believe that the same steps should be adopted in the creation of a JWG of SC 4x with other SCs, such as SC 29.

  1. Synergies within WG 1 and WG 11

How does the proposal preserve existing synergies within each of WG 1 and WG 11?

Existing synergies within each of WG 1 and WG 11 will be fully pres­er­ved by

  • Independently elevating the two WGs to SC status, WG 1 inside SC 29 and WG 11 as a separate SC 4x;
  • Retaining their existing informal structures and modi operandi;
  • Continuing their current work plans with no changes.
  1. Strategic planning

How does the proposal address the identification of opportunities for developing standards needed by the constituency?

Since their establishment, WG 1 and WG 11 have autonomously developed and implemented their own strategic plans for their own constituencies with extremely positive responses from the market.

MPEG and JPEG as SCs proposes that the two WGs

  • Be independently elevated to SC status, WG 1 inside SC 29 and WG 11 as a separate SC 4x;
  • Retain their existing informal structures and modi operandi;
  • Continue unchanged their current work plans;

so that SC 29 and SC 4x will have full freedom to implement their strategies using their own specific internal processes for the benefit of their constituencies.

MPEG and JPEG as SCs notes that SC 4x should not only leverage WG 11’s track record of extremely successful standards, but also target an increased level of adoption. The proposed Market needs AG in SC 4x will identify and quantify prospective usages of new standards or tech­nol­ogy areas, while the Technical requirements AG will continue to iden­tify their technology potential. Joint meetings of the two AGs will integrate the two views for inclusion in the SC’s strategic plan.

The MPEG and JPEG as SCs proposal complies with the following consensus statement of the report:

  • “In the interest of industry, it is important that the current projects of both WG1 and WG11 are not disrupted”.
  1. Joint work with other organizations

What is the impact of the proposal on work with other organizations, including with ITU-T with whom there is common text agreement?

MPEG and JPEG as SCs proposes that both SC 29 and SC 4x con­tinue their current collabor­ations with ITUT-T in the field of image and video coding, respectively, according to their own specific modal­ities. Further it proposes that collaboration with other ISO/IEC committees and exter­nal groups be intensified.

SC 4x will continue WG 11’s practice of collaborating with other committees in the develop­ment of new standards. In particular it will continue its collaboration with

  • JTC 1/SC 24 with which WG 11 has jointly developed ISO/IEC 18039 Mixed and Augmented Reality Reference Model standard;
  • TC 276 with which WG 11 has developed 3 ISO/IEC 23092 stan­dards and has 3 more are under development;
  • 3GPP (via liaison) to which WG 11 has provided two major standards: ISO/IEC 14496-12 ISO Based Media File Format and ISO/IEC 23009 DASH.

SC 4x will pursue collaboration opportunities currently being ex­plor­ed inside JTC 1, e.g. ISO/IEC 23093-1 Internet of Media Things Architecture (SC 41) and ISO/IEC 23090-8 Network based Media Processing (SC 42 on Big Media Data). It will also strengthen the ties with the many organis­ations WG 11 already liaises with (see WG 11 N 18556).

More collaborations will be activated if opportunities to develop standards on compression of other data will be identified in agreement with the relevant committees.

  1. Minimize disruption

How disruptive is the proposal to the work of WG 1 and WG 11, including in the context of continuity of leadership and organization?

JTC 1 has never restructured an SC as large and articulated as SC 29. Therefore, issues affecting disruptions to the SC 29 work plan, mainly structure and leadership should have the highest atten­tion.

It should be noted that WG 1 and WG 11 already operate as virtual SCs. Therefore, the proposal that the two WGs

  • Be independently elevated to SC status, WG 1 inside SC 29 and WG 11 as a separate SC 4x;
  • Retain their existing informal structures and modi operandi;
  • Continue unchanged their current work plans;

will cause minimal disruption. SC 29 and SC 4x will just need to continue to develop their work plans and implement their strategies using their own specific internal processes.

If JTC 1 will select ITNB as SC 4x secretariat and National Bodies will confirm existing WG 11 subgroup rapporteurs, SC 4x and its AGs/WGs will be immediately operational because WG 11 is already operating as a virtual Subcommittee. The same applies to SC 29.

The MPEG and JPEG as SCs proposal complies with the following consensus statement of the report:

  • “It is recommended that at least all WG11’s existing activities should remain in a single SC”.
  1. Scope of WG 11

Does the proposal address the concern that the scope of WG11 has grown too large for a single WG?

The scope of WG 11 is the current endpoint of the natural evolution of WG 11 constituencies’ needs of standards within WG 11’s programme of work. Elevation of WG 11 to SC level retains the consistency of WG 11 scope and adds formal structure and governance, while retaining WG 11’s internal structure and modus operandi.

  1. Relative size of WG 1 and WG 11

Does the proposal address the concern that the size of WG 1 and WG 11 are disproportionate?

The relative size of the two WGs is the result of the needs for stan­dards of the two constitu­en­cies. This is expressed by the consensus statement of this report

  • “The current size of WG11 has brought synergies that should not be lost”.

MPEG and JPEG as SCs simply rec­ognises that both WG 1 and WG 11 have achieved size, structure, operation and programmes of work that justify changing their status to Subcommittee – WG 1 inside SC 29 and WG 11 as a separate SC 4x. The two SCs will have different size, but this is already the reality of different JTC 1 subcommittees today.

  1. Single SC for WG 11

Does the proposal keep all of the existing WG 11 activities in a single SC?

Yes.

  1. Complete scopes

Does the proposal include complete scopes for all proposed SCs?

Yes. MPEG and JPEG as SCs proposes a scope for SC 29 and SC 4x that are compatible with those recently approved by SC 29 CIBs. The scope of SC 4x includes Compression of other data.

The proposal also includes the programmes of work for their AGs/WGs. Essentially, the prog­ram­mes of work are those of the existing subgroups of WG 1 and WG 11.

Additionally, MPEG and JPEG as SCs includes the offer of ITNB to take the secretariat of the proposed SC 4x, as required by the ISO/IEC directives, and provides details on the transfer of work and responsibilities from SC 29 to SC 4x.

  1. Operational efficiency

Does the proposal reduce the level of indirection between the work of each of the WG’s subgroups and the SC?

MPEG and JPEG as SCs proposes that SC 29 and SC 4x have a flat organisation of autonomous and interacting AGs and WGs. In SC 4x interaction is organised by the Technical Coordination AG, a function that has been operating since the early days of WG 11 and is one of the basic elements of WG 11’s modus operandi.

  1. Ongoing incremental effort or benefit

What is the ongoing incremental effort expended, or benefit derived, from implementing the proposal?

Both WG 1 and WG 11 already operate as virtual Subcommittees where convenors delegate to the subgroups a level of autonomy comparable to that of a WG inside a SC. Therefore, implem­en­ting the MPEG and JPEG as SCs proposal does not require incremental efforts.

It is expected that National Bodies will value the proposed continuity of leadership so that no incremental efforts are required.

  1. Initial effort

What is the initial effort needed to implement the proposal?

Steps Effort
1.     SC29 decision SC 29 requests JTC 1 to create a new SC 4x with proposed scope and title[1]
2.     JTC1 approval JTC 1 approves creation of SC 4x including scope (if not process stops)
3.     TMB ratification TMB ratifies JTC 1 resolution (if not process stops)
4.     Secretariat appointment JTC 1 appoints SC 4x secretariat[2]
5.     Chair nomination Secretariat nominates chair[3]
6.     Chair election NBs elect SC29 / SC 4x chair
7.     Call for convenors Secretariat calls for convenors[4]
8.     Convenor election NBs elect SC 29 and SC 4x convenors
9.     Communicate changes SC 29 / SC 4x communicates election of SC 29 / SC 4x chairs and convenors
10.  Convenor installation If proposed chair/convenors elected are those of WG1/WG 11, business as usual

 

[1] It is not required that SC 29 makes this resolution. However, it is desirable. This was done when SC 29 was created

[2] Proposal #1 endorses SC 29 N18149 from ITNB: at least one NB should be ready to hold secretariat

[3] Proposal #1 recommends secretariat to nominate WG 11 Convenor as SC 4x chair for a smooth transition

[4] Proposal #1 recommends that current SG chairs be nominated as WG convenors for a smooth transition. Any member may be nominated if supported by their NB.

Steps 5 to 10 are required for SC 29 as SC 29 officers’ terms are about to expire. Steps 5 to 10 are also required for SC 4x. If those steps are implemented, the structure is immediately operational.

An internal change of SC 29 structure and WG leadership would require redesign and adoption of new workflows, and creation of an SC-level technical coordination and strategic planning. Technical coordination and strategic planning are both absent at SC 29 level.

  1. Risks

What are the primary administrative and operational risks associated with implementing the proposal?

Implementation of the MPEG and JPEG as SCs proposal is based on ISO/IEC directives. The steps in workflow 13. Initial effort do not imply risks. There are no operational risks as shown in analysis of criterion 4. Minimize disruption.

7      Programme of work of SC 4x AGs and WGs

The Terms of Reference/Programmes of Work of the SC 29 and SC 4x AGs/WGs are almost verbatim the Terms of Reference/Programmes of Work of the SC 29 and WG 11 subgroups. New Terms of Reference are provided for those AGs/WGs not present or without an organis­ational identity in SC 29/WG 11.

  1. Technical Coordination AG

Terms of reference: To oversee the progress of development of ISO/IEC JTC 1/SC 4x standards according to the work plan, identify needs for interaction between and among working and advisory groups, and take appropriate actions to improve standards development.

Membership: SC 4x Chair, Technical Coordination AG Convenor, and all Advisory and Working Group Convenors.

2. Systems WG

Programme of work: Coded Representation of Encapsulation Formats, Delivery Protocols,

Multimedia Presentation Information; and Schemes for Declaring, and Description of Multimedia Content and Related Information, with the following program of work:

  • Serve as responsible body within ISO/IEC for recommending a set of standards consistent with the scope;
  • Cooperate with other standardisation bodies dealing with similar applications;
  • Develop international standards within the scope of work and integrate external standards with the goal to enable:
    • Carriage of content and related information on SC 4x specific delivery mechanisms, such as carriage in MPEG-2 Systems, ISO Base Media File Format (ISOBMFF including – but not limited to – DASH, CMAF, etc.), MPEG Media Transport (MMT), and jointly with (non-SC 4x specific) delivery mechanisms, such as Internet Protocols, developed by other standards bodies;
    • Presentation of a combination of coded media such as text, images, graphics, audio, moving images, immersive media and related information;
    • API to process and deliver content;
    • Schemes for declaring and describing multimedia content;
    • Common content encryption mechanisms to ensure interoperability of DRMs;
    • Licence and contract-based management of intellectual property rights in the MPEG-21 framework;
    • Digital representations common to all media types that do not belong to other groups;
  • Develop international standards for other content types such as fonts;
  • Test and validate the effective, efficient and extensible operation of the developed standards;
  • Verify the end-to-end operation e.g., with walkthroughs to ensure overall consistency, coherence and completeness;
  • Perform explorations with respect to new technology trend areas within the scope of work.

Membership: experts nominated by JTC 1/SC 4x National Bodies and one representative per Liaison organisation.

3. Video Coding WG

Programme of work: Development of coding and compression of digital representations and descriptions of moving pictures generated or captured by any technology; efficiency evaluation of coding systems and content description methods related to visual information; implementation feasibility analysis of coding systems and content description methods, with the following program of work

  • Serve as responsible body within ISO/IEC for recommending a set of standards consistent with the scope;
  • Cooperate with other standardisation bodies dealing with similar applications;
  • Define and collect test material and information target presentation devices;
  • Establish performance and complexity analysis criteria;
  • Develop methods for subjective assessment in collaboration with the Quality Assessment WG;
  • Carry out performance analysis by core experiments;
  • Perform complexity analysis for representative sets of tools and algorithms;
  • Develop and test efficient coding-decoding algorithms based on responses to Calls for Proposals;
  • Evaluate coding techniques and descriptions based on their performance by subjective testing, efficiency with respect to software and hardware implementation, and feasibility of systems architectures;
  • Develop and propose international standards for coding and compression of digital representations and descriptions of moving pictures captured or generated with any technology;
  • Solicit inputs from and liaise with external bodies;
  • Perform explorations on new technology trend areas within the scope of work.

Membership: experts nominated by SC 4x National Bodies and one representative per Liaison organisation.

4. Audio Coding WG

Programme of work: Development of international standards for coded digital representation of audio and associated metadata with the following program of work

  • Serve as responsible body within ISO/IEC for recommending a set of standards consistent with the scope of work:
  • Cooperate with other standardisation bodies dealing with similar or complementary applications;
  • Define relevant input audio material;
  • Develop efficient audio encoding-decoding algorithms based on responses to Calls for Proposals;
  • Identify metadata to describe properties of audio signals and algorithms to extract this metadata;
  • Develop algorithms for and metadata to facilitate high-quality audio rendering for presentation;
  • Propose standards for the coded representation of audio information;
  • Propose standards for the coded representation of audio metadata;
  • Propose standards for the coded representation of audio metadata and audio rendering information;
  • Assess complexity of audio coding-decoding algorithms;
  • Define, organize and conduct, in collaboration with the Quality Assessment WG, subjective testing to assess the quality of assess the quality of proposed and standardized audio technology;
  • Solicit inputs from and engage in liaison with external bodies;
  • Perform explorations of possible new technology within the scope of work.

Membership: experts nominated by JTC 1/SC 4x National Bodies and one representative per Liaison organisation.

5. 3D Graphics Coding

Programme of work: Coding of primitives for 3D graphics objects and environments and integration of them with natural audio and video information, with the following programme of work:

  • Serve as responsible body within ISO/IEC for recommending a set of standards consistent with the area of work;
  • Cooperate with other standardisation bodies dealing with similar applications;
  • Develop efficient coding-decoding algorithms for internally and externally defined 3D Graphics specifications and associated metadata;
  • Provide source code implementation of proposed standards;
  • Establish performance analysis criteria;
  • Analyse performance by core experimentation procedures;
  • Define, organize and conduct, in collaboration with the Quality Assessment WG, subjective assessment tests that assess the quality of 3D graphics coding-decoding algorithms;
  • Establish complexity analysis criteria;
  • Perform complexity analysis for representative sets of tools and algorithms;
  • Solicit inputs from and engage in liaison with external bodies
  • Technology trend information sources;
  • Perform explorations with respect to new technology trend areas within the scope of work.

Membership: experts nominated by SC 4x National Bodies and one representative per Liaison organisation.

6. Quality Assessment WG

Programme of work: Quality Assessment of Audio-Visual Information Coding, development of best practice, subjective assessment methods and objective quality metrics to assess the quality of coded audio, moving pictures, and moving pictures and audio with the following programme of work

  • Serve as responsible body within ISO/IEC for developing standard test procedures consistent with the area of work;
  • Cooperate with other standardization bodies operating in the relevant areas;
  • Consider requirements for interworking with telecommunication and broadcasting tests procedure;
  • Design and conduct all the subjective and objective assessment tests of any kind of moving pictures and audio in collaboration with the relevant WGs;
  • Design new methods and metrics;
  • Develop standards for subjective and objective assessment of any kind of moving pictures and audio.
  • Provide guidelines and best practices for the “expert viewing” and “visual check” assessment of any kind of moving pictures and audio to support new exploitation activities in preparation of the meetings and during the meetings;
  • Maintain existing subjective methods and quality metrics for the assessment of any kind of audio-visual media;
  • Maintain and improve the library of test material of any kind of moving pictures and audio;

Membership: experts nominated by SC 4x National Bodies and one representative per Liaison organisation.

7. Genomic Coding WG

Programme of work: Development of standards for different types of Genomic Data, with the following programme of work:

  • Serve as responsible body within ISO/IEC for recommending a set of standards consistent with the area of work;
  • Cooperate with other standardisation bodies dealing with similar applications;
  • Consider requirements for inter-working with other genomic data coding approaches defined by other standardisation bodies;
  • Develop and test efficient coding-decoding algorithms for raw data, associated analysis data and associated annotation data;
  • Establish performance analysis criteria;
  • Analyse performance by core experimentation procedures;
  • Establish complexity analysis criteria;
  • Perform complexity analysis for representative sets of tools and algorithms;
  • Provide source code implementation for proposed standards;
  • Propose standards for the coded representation of genomic data and associated metadata;
  • Perform explorations with respect to new technology trend areas within the scope of work;
  • Survey technology trends in sequencing data generation and define relevant input genomic data material.

Membership: experts nominated by SC 4x National Bodies and one representative per Liaison organisation.

8, Joint Working Groups with ITU-T SG 16

  • ITU-T/ISO/IEC Joint Collaborative Team on Video Coding (JCT-VC) (See SC 29/WG 11 N 11112)
  • ITU-T/ISO/IEC Joint Video Experts Team (JVET) for Video Coding Standard Development (JVET) (See SC 29 N 17240)

9, Technical Requirements AG

Scope: Requirements studies for SC 4x standards with the purpose of ensuring that requirements coming from prospective application areas of generic coding algorithms developed by SC 4x are taken into consideration in all phases of work:

  • Collect and organise requirements, generic as well as specifically coming from different application fields;
  • Identify the need for and state of technologies within the scope of but not currently being considered by SC4x;
  • Keep activities, studies and reports coordinated with Market Needs AG;
  • Submit technical studies and technical assessments of proposals to SC 4x for action;
  • Produce a requirement definition document prior to specification phase;
  • Constantly update requirements definitions following needs arising from application areas;
  • Monitor adherence of specifications under development to the corresponding requirements;
  • Develop profiling solutions to address relevant classes of applications for SC 4x standards jointly with the relevant WGs;
  • Liaise with other standard bodies in the field of requirements.

Membership: experts nominated by SC 4x National Bodies and one representative per Liaison organisation.

10, Market needs

Terms of reference: Development of market studies and assessment of market relevance of proposals for MPEG standards:

  • Develop market studies;
  • Assess market relevance of proposals for MPEG standards;
  • Keep activities coordinated with Techical Requirements AG;
  • Submit market studies and market relevance assessments of proposals to SC4x for action.

Membership: experts nominated by SC 4x National Bodies and one representative per Liaison organisation.

11. Liaison and Communication AG

Terms of reference: Liaison and Communication of plans, activities and results to the industry and the standard user community, in collaboration with AGs and WGs:

  • Review the communication aspects of SC 4x standards (e.g. Introduction, Scope, illustrative figures);
  • Develop material that illustrates the motivations, the nature and the benefits from the adoption of SC 4x standards;
  • Produce descriptions of SC 4x standards activities;
  • Identify and organise internal workshops and seminars designed to promote understanding of SC 4x standards;
  • Identify opportunities for and coordinate the production of technical papers related to SC 4x standards for submission to journals and conferences;
  • Review and harmonise proposals for liaisons to external organisation;
  • Assign input liaisons to appropriate WGs/AGs.

Membership: experts nominated by JTC 1/SC 4x National Bodies and one representative per Liaison organisation.

8      Programme of work of SC 29 AGs and WGs

(effective after establishment of SC 4x)

(the following is a first attempt at defining the SC 29 structure after creation of SC 4x)

  1. Requirements AG

Terms of Reference:

  • Analysis and tracking of relevant emerging use cases, functionalities and requirements.
  • Review and assessment of new work item proposals, notably their use cases, and requirements as well as tracking and updating for ongoing work items. Use cases and requirements must reflect current and future market needs.
  • Review needs resulting from widespread adoption of emerging technologies and paradigms.
  • Design and issue calls, notably calls for information, for evidence and proposals.
  • Definition of profiles and levels

2. Systems and Integration WG

Program of Work:

  • The development and maintenance of file structure components common across the JPEG standards.
  • Review and coordination of metadata-related activities, including development and maintenance throughout the life cycle of related standards.
  • Considerations of interoperability between relevant specifications.

3. JPEG Coding, Test and Quality WG

Program of Work:

  • Review and coordination of coding technology in JPEG;
  • Review and coordination of testing and quality assessment activities in JPEG;
  • Specification of coding technology in JPEG;
  • Specification of testing and quality assessment standards in JPEG;
  • Oversight of testing and quality assessment procedures, core experiments and exploration studies.

4. Communications AG

Terms of Reference:

  • Responsible for coordinating communications with external organizations.
  • Collecting and coordinating liaisons received and their responses
  • Support for initiating with organizations
  • Providing guidance on general document handling procedures and issues
  • Help with preparation of appropriate information to be communicated by JPEG Committee.
  • Establishing PR (Public Relations) communications, that consist of providing press releases and informing journalists, news outlets and publishers of JPEG activities.
  • Coordinate maintenance, revisions and regular updates of JPEG website.
  • Communication with SC29 webmaster regarding WG1 activities and updates in SC29 website.