Industry leaders agree to common GML geolocation method for JPEG 2000

-- Berlin, Germany, Sydney and Perth, Australia, Montpellier, France and Strathmore, Ireland May 2004

Leaders in JPEG2000 technology today announced their endorsement of a common way to use GML schema for storing geo-location information for imagery, within the JPEG2000 format. This definition is an open manufacturer agreement, based on the proposal of Algo Vision LuraTech on GML inside JPEG2000, which has already been adopted as a part of the standard.

Geo-location information is used to define the image’s map projection, datum and extents.

Algo Vision LuraTech GmbH, Kakadu Software, Earth Resource Mapping and Morgan Multimedia have been actively involved in JPEG2000 since the very beginning and have a common market share of more than 60%. Ensuring that geo-location information is stored in a unified and non-proprietary way within JPEG2000 using GML (Geography Markup Language) is an important step for the geospatial industry.

The organizations have released a simple 3 page document explaining how to use GML to store geo-location information in JPEG2000 files. The document includes GML examples and a source code example to write JPEG2000 geo-location information. JPEG2000 developers wishing to ensure that geo-location is recorded in a consistent fashion can find the document at http://www.ermapper.com/jpeg2000/standards/JPEG2000_Geolocation.pdf.

The paper will also be introduced to the JPEG2000 ISO committee, as the definition makes GML part of the JPEG2000 file format. The definition was already provided by Algo Vision LuraTech to leading industry organizations including the European Union Satellite Center at the recent ISO conference on JPEG2000 in Madrid, Spain. The industry embraces this agreement between the largest and experienced JPEG2000 manufacturers, as interoperability is one of the major issues.

Dr. Taubman, Author of Kakadu Software and a key contributor to the JPEG2000 standard, said “It is important to use existing standards. The JPEG2000 ISO standard caters for XML formatted metadata. GML in turn is an XML schema. Ensuring geo-location information is stored in a consistent way using GML means that different JPEG2000 libraries can read and write geo-location information regardless of which JPEG2000 library is used.”

Stuart Nixon, CEO and founder of Earth Resource Mapping, added “There has been some recent confusion in the market place about GML and JPEG2000. The reality is simple: JPEG2000 supports GML metadata. This is due to Algo Vision LuraTech’s efforts some time ago. GML uses the standard EPSG definitions for map projection and datum. This combined effort by JPEG2000 leaders simply ensures that the minimal sub-set of GML needed to store map projection and extents information is read and written in a consistent way by all products.”

Guillaume de Bailliencourt, Lead Manager for Morgan-Multimedia, said “We are pleased to be involved in this important process to ensure that JPEG 2000 libraries can all read and write geolocation information in the same way.”
Dr. Ivan Fox of Yakoa said "The advantages in having a single, open and standard approach to geo-location are clear. Yakoa supports this initiative as a positive step forward for both customers and vendors alike".

Carsten Heiermann, Managing Director of Algo Vision LuraTech GmbH, said that “Algo Vision LuraTech has been active in ensuring that JPEG2000 meets the needs of the geospatial community. This definition will ensure interoperability. Therefore we invite all other JPEG2000 vendors to join our initiative instead of making their own proprietary definitions. It is important, that vendors of JPEG2000 work together to achieve customers confidence in interoperability of all geospatial JPEG2000 solutions.”

About Algo Vision LuraTech GmbH
Algo Vision LuraTech GmbH is one of the leading developers of JPEG2000 implementations and technology for the compression of images, data and scanned documents in color. Resulting from the 2002 merger of Algo Vision Mediatec GmbH and LuraTech GmbH, the Berlin-based company became a subsidiary of the Algo Vision Group. Algo Vision LuraTech is intensively involved with international standardization committees such as the International Organization for Standardization (ISO) and played a significant part in establishing JPEG2000 as an international standard for image data compression.

About Earth Resource Mapping
Earth Resource Mapping offers enterprise geospatial imagery solutions. Clients in more than 120 countries use ER Mapper to prepare imagery, ECW JPEG 2000 to compress and use imagery, the Image Web Server to serve imagery over the Internet and RightWebMap for integrated web map solutions. Visit ER Mapper at www.ermapper.com or the Image Web Server web site at www.EarthEtc.com.

About Kakadu Software
The Kakadu software is written by David Taubman, who was also the principle author of the JPEG2000 Verification Model (VM) software. Dr. Taubman holds the position of Associate Professor at the University of New South Wales. He is a key contributor to the JPEG2000 standard and co-author (with Professor Marcellin) of a comprehensive book on image compression and JPEG2000, published by Kluwer Academic Publishers.

About Morgan Multimedia
Morgan Multimedia is a digital imaging technology company created in 1990 by Guillaume de Bailliencourt and based in Montpellier, south of France. After realizations in medical imaging and multimedia language laboratories, it focuses now on new products development, oriented in imaging and digital video processing and compression: JPEG, M-JPEG, JPEG2000, M-JPEG2000� For Morgan Multimedia releases, visit its website at www.morgan-multimedia.com.

About Yakoa
Yakoa was founded in early 2002 by software architect Olivier Lau and image compression specialist Dr. Ivan Fox. Yakoa is a leading JPEG2000 implementer and develops a range of JPEG2000 based software. More information can be found at www.yakoa.com

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