Meta Raster Format

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|subcat=Geospatial
 
|subcat=Geospatial
 
|extensions={{ext|mrf}}, {{ext|ppg}}, {{ext|pjg}}, {{ext|idx}}
 
|extensions={{ext|mrf}}, {{ext|ppg}}, {{ext|pjg}}, {{ext|idx}}
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|released=≤2014 (draft), 2016 (v1.0)
 
}}
 
}}
'''Meta Raster Format''' is an image and data storage format designed for fast access to imagery within a georeferenced tile pyramid at discrete resolutions. It was originally developed at NASA's Jet Propulsion Laboratory.
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'''Meta Raster Format''' ('''MRF''') is an image and data storage format designed for fast access to imagery within a georeferenced tile pyramid at discrete resolutions. It was originally developed at NASA's Jet Propulsion Laboratory.
  
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== Format details ==
 
It is a composite format, with an image consisting of 3 components:
 
It is a composite format, with an image consisting of 3 components:
  
# MRF metadata file in XML format (file extension: .mrf)
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# MRF metadata file in [[XML]] format (file extension: .mrf)
# MRF data file. This is either a "Pile of PNGs" (file extension: .ppg) or a "Pile of JPEGS" (file extension: pjg). The data file contains blocks of concatenated images in [[PNG]] or [[JPEG]] format.
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# MRF data file. This can be a "Pile of PNGs" (file extension: .ppg) or a "Pile of JPEGS" (file extension: .pjg), in which case the data file contains blocks of concatenated images in [[PNG]] or [[JPEG]] format. Other possible formats include [[LERC]].
 
# MRF index file (file extension: .idx)
 
# MRF index file (file extension: .idx)
 
In addition, recent versions of the format are reported to support [https://github.com/Esri/lerc Limited Error Raster Compression] (LERC), which was developed at ESRI. However, the current (January 2015) version of the filespec does not mention LERC yet.
 
  
 
== Specification ==
 
== Specification ==
  
* [https://github.com/nasa-gibs/mrf/blob/master/spec/mrf_spec.md Meta Raster Format Specification v0.3.0 (Draft)]
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* [https://github.com/nasa-gibs/mrf/blob/master/spec/mrf_spec.md Meta Raster Format Specification]
  
 
== Software ==
 
== Software ==
  
* [https://github.com/nasa-gibs/mrf Meta Raster Format driver for GDAL]
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* [https://github.com/OSGeo/gdal/tree/master/gdal/frmts/mrf Meta Raster Format driver for GDAL]
  
 
== Links ==
 
== Links ==
  
* [https://github.com/nasa-gibs/mrf/blob/master/src/gdal_mrf/frmts/mrf/docs/MUG.docx?raw=true Meta Raster Format User Guide]
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* [https://github.com/nasa-gibs/mrf MRF documentation and utilities]
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** [https://github.com/nasa-gibs/mrf/blob/master/doc/MUG.md MRF User Guide]
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* [https://gdal.org/drivers/raster/marfa.html GDAL documentation: MRF]
 
* [https://gcn.com/blogs/emerging-tech/2016/01/nasa-esri-image-storage.aspx NASA, Esri speed delivery of cloud-based imagery data]
 
* [https://gcn.com/blogs/emerging-tech/2016/01/nasa-esri-image-storage.aspx NASA, Esri speed delivery of cloud-based imagery data]
 
* [https://fileformats.wordpress.com/2016/01/21/mrf-for-large-images/ MRF for large images]
 
* [https://fileformats.wordpress.com/2016/01/21/mrf-for-large-images/ MRF for large images]
 
* [https://geonet.esri.com/servlet/JiveServlet/downloadBody/7473-102-1-9153/MRF_CloudOptimizedImageFormat_LERC_Compression.pdf MRF as a Cloud Optimized Raster Format and LERC Compression]
 
* [https://geonet.esri.com/servlet/JiveServlet/downloadBody/7473-102-1-9153/MRF_CloudOptimizedImageFormat_LERC_Compression.pdf MRF as a Cloud Optimized Raster Format and LERC Compression]
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[[Category:XML based file formats]]
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[[Category:Multi-file formats]]

Latest revision as of 16:07, 16 November 2020

File Format
Name Meta Raster Format
Ontology
Extension(s) .mrf, .ppg, .pjg, .idx
Released ≤2014 (draft), 2016 (v1.0)

Meta Raster Format (MRF) is an image and data storage format designed for fast access to imagery within a georeferenced tile pyramid at discrete resolutions. It was originally developed at NASA's Jet Propulsion Laboratory.

Contents

[edit] Format details

It is a composite format, with an image consisting of 3 components:

  1. MRF metadata file in XML format (file extension: .mrf)
  2. MRF data file. This can be a "Pile of PNGs" (file extension: .ppg) or a "Pile of JPEGS" (file extension: .pjg), in which case the data file contains blocks of concatenated images in PNG or JPEG format. Other possible formats include LERC.
  3. MRF index file (file extension: .idx)

[edit] Specification

[edit] Software

[edit] Links

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