Comments on: OGC approves GMLJP2 http://www.gisblog.net/news/ogc-approves-gmljp2/ Geospatial Information Science - Trends, Tools & Technologies Wed, 19 Nov 2008 02:06:12 +0000 http://wordpress.org/?v=2.5 By: Theodor Foerster http://www.gisblog.net/news/ogc-approves-gmljp2/#comment-89 Theodor Foerster Tue, 14 Feb 2006 12:51:29 +0000 http://www.gisblog.net/news/ogc-approves-gmljp2/#comment-89 Ok, as far as I understood, JPEG2000 is a new file standard which provides sophisticated mechanisms for compression. Another advantage of the format is, that it supports embedded metadata. This fact is utilized in the GMLJP2 standard. So the XML is directly embedded in the file. Softwaresupport seems to be rare until now. But cou can view it with photoshop and also for instance with the JAI API. No browser support yet. The standard will be interesting for search engines like images.google.com (combined with google earth perhaps) or for digital foto cameras, which just embed a GPS footprint into the photo you just made. There are also other applications to think of (map annotations, sematically enriched WMS response). Ok, as far as I understood, JPEG2000 is a new file standard which provides sophisticated mechanisms for compression. Another advantage of the format is, that it supports embedded metadata. This fact is utilized in the GMLJP2 standard. So the XML is directly embedded in the file. Softwaresupport seems to be rare until now. But cou can view it with photoshop and also for instance with the JAI API. No browser support yet.

The standard will be interesting for search engines like images.google.com (combined with google earth perhaps) or for digital foto cameras, which just embed a GPS footprint into the photo you just made. There are also other applications to think of (map annotations, sematically enriched WMS response).

]]> By: Carsten Keßler http://www.gisblog.net/news/ogc-approves-gmljp2/#comment-88 Carsten Keßler Tue, 14 Feb 2006 12:20:05 +0000 http://www.gisblog.net/news/ogc-approves-gmljp2/#comment-88 Are those files still standard JPEGs which can be viewed with any ordinary image viewer? I understand that I need special software to read the GML stuff hidden in the JPEG - but apart from that, can I view the image with standard software? By the way: Is there a difference between JPEG and JPEG 2000? Are those files still standard JPEGs which can be viewed with any ordinary image viewer? I understand that I need special software to read the GML stuff hidden in the JPEG - but apart from that, can I view the image with standard software?

By the way: Is there a difference between JPEG and JPEG 2000?

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