Moving Features SWG

1.    Moving Features

Applications using moving feature data, typically on vehicles and pedestrians, have recently been rapidly increasing. Innovative applications are expected to require the overlay and integration of moving feature data from different sources to create more social and business values. Efforts in this direction should be encouraged by ensuring smoother data exchange because handling and integrating moving feature data will broaden the market for geo-spatial information such as Geospatial Big Data Analysis.

2.    Purpose of this Standards Working Group

The purpose of this Moving Features Standard Working Group is to develop a candidate  standard for moving features and progress the document to the state of an adopted OGC standard. The goal of this candidate standard is to establish an encoding format for handling moving feature data. This SWG will start from the discussion paper (OGC 12-117r1, OGC Standard for Moving Features; Requirements). This document summarizes the requirements for and basic idea of a standard for applications using moving feature data.

3.    Business Value Proposition

Market demand is rapidly increasing recently for better integration of moving feature data with GIS and other geospatial technologies. Example applications using moving feature data include traffic congestion information services using probe cars or taxis equipped with GPS to measure the travel time of each road link, tracking systems on auto-trucks for logistics management, and agent-based road traffic simulation systems for forecasting traffic situations. Systems relying on single-source moving feature data are now evolving into more integrated systems. Integration of moving feature data from different sources is a key to developing more innovative and advanced applications. This SWG aims to provide a standard for handling and sharing moving features data.

4.    Scope of Work

The scope of work for this SWG is to develop a candidate standard for moving features and progress it to the state of an adopted standard by using OGC RFC process as follows;

  • development a candidate of OGC standard for moving feature: this candidate standard, called tentatively “OGC Moving Features Encoding Standard” will provide an encoding format for exchanging moving feature data,
  • gathering comments from SWG member on the draft of candidate standard and reflecting them to the candidate standard,
  • submitting the candidate standard to OAB for review and subsequent release for the 30-day public comment,
  • resolving the comments from OGC members, and
  • submitting the final version of candidate standard to the OGC TC for voting.

The requirements for standards on moving features are summarized below;

  1. “ISO19141:2008 Schema for Moving Features” should be referred to as the conceptual framework for this development. A standard data model should describe the movement of zero to three-dimensional geometric features including changes in attitude or rotation along with the movement. The target of this specification is rigid features mentioned in ISO 19141:2008.
  2. The implementation specifications on moving features should be prioritized, which more directly contributes to the system development because moving feature data is becoming more popular with the very rapid growth of smart phone users worldwide, and this is strongly pushing system developers towards the integration of moving feature data rather than using the moving feature data from a single source. Implementation specifications of general framework to handle movements of features and its derivation for 2D geometries are starting point. The scope of the standardization should be expanded incrementally through communication and discussions with system developers and potential users.
  3. Methods specific to moving feature data handling, such as the detection of collisions, could be standardized after data model development arrives at certain level of maturity, based on further analysis of the technology and market trends.
  4. Visualization and spatio-temporal interpolation of geometric features are already supported by popular standards such as X3D ( Unnecessary overlaps should be avoided, while popular standards should be referred to in developing a new specification on the moving features.

The use cases for standards on moving features are summarized below;

  1. Integrated simulation for disaster risk management: Moving feature data is collected/integrated from different simulation systems such as people evacuation simulations, road vehicle simulations including emergency vehicles, and tsunami simulations. Many of them, except the tsunami simulations, are agent-based simulation systems that explicitly output the trajectories of individual agents, i.e., pedestrians and vehicles. The trajectories are described in this specification.
  2. Traffic information services: Traffic congestion and the trafficability of roads can be estimated to provide guidance information to road users from real-time vehicle trajectory data collected from probe cars. Sources are becoming diversified from a fleet of taxis with GPS belonging to a single company to the mixture of auto-trucks, buses, and navigation system users. This trend makes it more necessary to integrate data using different models and formats. Integrated data have recently been used to identify traffic accident hot spots by analyzing a large amount of data on vehicle trajectories and velocity/acceleration changes.
  3. Security services: This service requires the generation and sharing of situational information as a common picture by integrating and visualizing data on pedestrian and vehicle movements collected from heterogeneous sensors like surveillance cameras, GPSs, and mobile phones.
  4. Navigation for Robots: Robots are expected to guide and help in the movement of elderly or handicapped people in public spaces like shopping malls. Since robots can identify only near-by obstacles and moving features with laser range and/or vision sensors, they may require situational information on a larger scale, and this requires integration of the trajectory data from the moving features collected through sensor networks.
  5. Aviation, maritime traffic monitoring: Track information should be shared among organizations for air traffic control, ocean monitoring, etc. This specification is applicable to such track information and systems including vessel tracking systems and emergency management systems for oil spill monitoring.

The justifications of the new candidate OGC standard are summarized below:

  1. ISO 19141:2008 compliant implementation standard
  2. Massive data handling

The relation between this new candidate OGC standard and other existing standards are summarized below;

  1. Harmonized with: ISO19141:2008 Schema for Moving Features (trajectory and prism model)

The RoadMap plan of the activities for this SWG is;

  1. 2013/01 Discussion paper v 0.2, Ad-hoc meeting
  2. 2013/03 SWG charter post & review & approved
  3. 2013/03 SWG Kickoff meeting
  4. 2013/06 Moving Feature v 0.1
  5. 2013/09 Moving Feature v 0.2
  6. 2013/12 Moving Feature v 0.3
  7. 2014/01 SWG voting for 30 days public comment period
  8. 2014/02 Public comment period
  9. 2014/05 Reflection of public comments and revision for Moving Feature v 0.4
  10. 2014/06 SWG internal voting for formal submission to OGC TC
  11. 2014/07 In case of approval for the formal submission to OGC TC, the final candidate standard will be sent to OGC TC for voting

4.1        What is Out of Scope?
The following activities are out of scope for the initial OGC Moving Features specification, but may be in scope for future versions of the OGC Moving Features specification, or other related specifications as indicated.
l  Non-rigid features (future or related)
l  Moving Features data service interfaces (related)
l  Coverage data (i.e. water movement) (related)
l  Sensor measurements data (related)
4.2        Specific Contribution of Existing Work as a Starting Point
The work of this SWG will start from a discussion paper; OGC 12-117r1, OGC Standard for Moving Features; Requirements.
4.3        Determination of SWG Completion
The Moving Features SWG will dissolve after the following three milestones have been achieved:

  1. The SWG has completed evaluation and incorporation into the candidate standard of all comments received during the public comment period.
  2. Approval by the SWG membership of a recommendation to submit the document to the TC for consideration as an OGC Adopted Standard.
  3. The candidate standard has been approved by the OGC Technical and Planning Committees as an Adopted OGC standard.

5.    Description of Deliverables

The following deliverables will result from the work of this SWG;

  • A final version of Moving Features standard documents for the submission to the TC, and
  • Corresponding schemas associated with Moving Features.

6.    IPR Policy for this SWG

R RAND-Royalty Free.    RAND for fee

7.    Anticipated Participants

Those involved in the design, development, implementation, or use of elements listed above in "Scope of the Work". This includes search service providers, prospective users of search services exposed as XML, information architects and bibliographic, metadata, and content provider.

8.    Other Informative Remarks about this SWG

a. Similar or Applicable Standards Work (OGC and Elsewhere). The following standards and projects may be relevant to the SWG's planned work, although none currently provide the functionality anticipated by this committee's deliverables:

  • ISO 19141:2008 Geographic information -- Schema for moving features
  • OGC Simple Features Specification for SQL
  • Web3D X3D

b. Details of the First Meeting
The first meeting of the SWG will be held at the OGC TC in Abu Dhabi on March 17-21 2013. Call-in information will be provided to the SWG's e-mail list and on the portal calendar in advance of the meeting.
c. Projected On-going Meeting Schedule
The work of the SWG will be carried out primarily by email and conference calls, possibly every month, with face-to-face meetings perhaps at each of the OGC TC meetings.
d. Supporters of the Proposal
The following people support this proposal and are committed to the Charter and projected meeting schedule. These members are known as SWG Founding or Charter members. Once the SWG is officially activated, this group is immediately “opted-into” the SWG and have voting rights from the first day the SWG is officially formed. Extend the table as necessary.



Ryosuke Shibasaki

The University of Tokyo

Akinori Asahara

Central Research Laboratory, Hitachi, Ltd.

Thomas H. Kolbe

Technische Universität München

Ki-Joune Li

Pusan National University

Kuo-Yu slayer Chuang

Industrial Technology Research Institute

Carl Stephen Smyth


Jiyeong Lee

University of Seoul

Mike Botts

Botts Innovative Research

Steve Liang

University of Calgary

John Herring


Christine Perey

PEREY Research & Consulting

Toshiaki Iwata

National Institute of Advanced Industrial Science & Technology (AIST)

David Burggraf

Galdos Systems Inc

e. Convener(s) Ryosuke Shibasaki (Center for Spatial Information Science, The University of Tokyo)