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geotiff_standard.html
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<!DOCTYPE html>
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<title>OGC GeoTIFF Standard</title>
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<body class="book">
<div id="header">
<h1>OGC GeoTIFF Standard</h1>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div style="page-break-after: always;"></div>
<table class="tableblock frame-none grid-none stretch">
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<td class="tableblock halign-right valign-top" style="background-color: #FFFFFF;"><p class="tableblock"><strong class="big">Open Geospatial Consortium</strong></p></td>
</tr>
<tr>
<td class="tableblock halign-right valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Submission Date: <yyyy-mm-dd></p></td>
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<tr>
<td class="tableblock halign-right valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Approval Date: <yyyy-mm-dd></p></td>
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<td class="tableblock halign-right valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Publication Date: <2018-12-16></p></td>
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<td class="tableblock halign-right valign-top" style="background-color: #FFFFFF;"><p class="tableblock">External identifier of this OGC® document: <a href="http://www.opengis.net/doc/{doc-type}/{standard}/{m.n}" class="bare">http://www.opengis.net/doc/{doc-type}/{standard}/{m.n}</a></p></td>
</tr>
<tr>
<td class="tableblock halign-right valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Internal reference number of this OGC® document: YY-nnnrx</p></td>
</tr>
<tr>
<td class="tableblock halign-right valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Version: 0.3</p></td>
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<tr>
<td class="tableblock halign-right valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Category: OGC® <Implementation></p></td>
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<td class="tableblock halign-right valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Editor: Ted Habermann</p></td>
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<td class="tableblock halign-center valign-top" style="background-color: #FFFFFF;"><p class="tableblock"><strong class="big">OGC GeoTIFF Standard</strong></p></td>
</tr>
</tbody>
</table>
<table class="tableblock frame-none grid-none stretch">
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<col style="width: 100%;">
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<td class="tableblock halign-center valign-top" style="background-color: #FFFFFF;"><p class="tableblock"><strong>Copyright notice</strong></p></td>
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<td class="tableblock halign-center valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Copyright © 2018 Open Geospatial Consortium</p></td>
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<td class="tableblock halign-center valign-top" style="background-color: #FFFFFF;"><p class="tableblock">To obtain additional rights of use, visit <a href="http://www.opengeospatial.org/legal/" class="bare">http://www.opengeospatial.org/legal/</a></p></td>
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<td class="tableblock halign-center valign-top" style="background-color: #FFFFFF;"><p class="tableblock"><strong>Warning</strong></p></td>
</tr>
</tbody>
</table>
<div class="paragraph">
<p>This document is not an OGC Standard. This document is distributed for review and comment. This document is subject to change without notice and may not be referred to as an OGC Standard.</p>
</div>
<div class="paragraph">
<p>Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation.</p>
</div>
<table class="tableblock frame-all grid-none" style="width: 50%;">
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<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Document type: OGC® Standard</p></td>
</tr>
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<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Document subtype: Not Applicable</p></td>
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<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Document stage: Draft</p></td>
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<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Document language: English</p></td>
</tr>
</tbody>
</table>
<div style="page-break-after: always;"></div>
<div class="paragraph">
<p> License Agreement</p>
</div>
<div class="paragraph">
<p><span class="small">Permission is hereby granted by the Open Geospatial Consortium, ("Licensor"), free of charge and subject to the terms set forth below, to any person obtaining a copy of this Intellectual Property and any associated documentation, to deal in the Intellectual Property without restriction (except as set forth below), including without limitation the rights to implement, use, copy, modify, merge, publish, distribute, and/or sublicense copies of the Intellectual Property, and to permit persons to whom the Intellectual Property is furnished to do so, provided that all copyright notices on the intellectual property are retained intact and that each person to whom the Intellectual Property is furnished agrees to the terms of this Agreement.</span></p>
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<p><span class="small">If you modify the Intellectual Property, all copies of the modified Intellectual Property must include, in addition to the above copyright notice, a notice that the Intellectual Property includes modifications that have not been approved or adopted by LICENSOR.</span></p>
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<p><span class="small">THIS LICENSE IS A COPYRIGHT LICENSE ONLY, AND DOES NOT CONVEY ANY RIGHTS UNDER ANY PATENTS THAT MAY BE IN FORCE ANYWHERE IN THE WORLD.</span></p>
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<p><span class="small">Except as contained in this notice, the name of LICENSOR or of any other holder of a copyright in all or part of the Intellectual Property shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Intellectual Property without prior written authorization of LICENSOR or such copyright holder. LICENSOR is and shall at all times be the sole entity that may authorize you or any third party to use certification marks, trademarks or other special designations to indicate compliance with any LICENSOR standards or specifications. This Agreement is governed by the laws of the Commonwealth of Massachusetts. The application to this Agreement of the United Nations Convention on Contracts for the International Sale of Goods is hereby expressly excluded. In the event any provision of this Agreement shall be deemed unenforceable, void or invalid, such provision shall be modified so as to make it valid and enforceable, and as so modified the entire Agreement shall remain in full force and effect. No decision, action or inaction by LICENSOR shall be construed to be a waiver of any rights or remedies available to it.</span></p>
</div>
<div style="page-break-after: always;"></div>
<div id="toc" class="toc">
<div id="toctitle" class="title">Table of Contents</div>
<ul class="sectlevel1">
<li><a href="#_scope">1. Scope</a></li>
<li><a href="#_conformance">2. Conformance</a></li>
<li><a href="#_references">3. References</a></li>
<li><a href="#_terms_and_definitions">4. Terms and Definitions</a>
<ul class="sectlevel2">
<li><a href="#_band">4.1. band</a></li>
<li><a href="#_cell">4.2. cell</a></li>
<li><a href="#_code">4.3. code</a></li>
<li><a href="#_coordinate">4.4. coordinate</a></li>
<li><a href="#_coordinate_reference_system">4.5. coordinate reference system</a></li>
<li><a href="#_coordinate_system">4.6. coordinate system</a></li>
<li><a href="#_correspondence_model">4.7. correspondence model</a></li>
<li><a href="#_coverage">4.8. coverage</a></li>
<li><a href="#_datum">4.9. datum</a></li>
<li><a href="#_device_space">4.10. device space</a></li>
<li><a href="#_direct_position">4.11. direct position</a></li>
<li><a href="#_domain">4.12. domain</a></li>
<li><a href="#_double">4.13. double</a></li>
<li><a href="#_ellipsoid">4.14. ellipsoid</a></li>
<li><a href="#_flattening">4.15. flattening</a></li>
<li><a href="#_geocoding">4.16. geocoding</a></li>
<li><a href="#_geographic_coordinate_system">4.17. geographic coordinate system</a></li>
<li><a href="#_geokey">4.18. geokey</a></li>
<li><a href="#_georectified_grid">4.19. georectified grid</a></li>
<li><a href="#_georeferencing">4.20. georeferencing</a></li>
<li><a href="#_geotiff">4.21. GeoTIFF</a></li>
<li><a href="#_grid">4.22. grid</a></li>
<li><a href="#_grid_2">4.23. grid</a></li>
<li><a href="#_imagery">4.24. imagery</a></li>
<li><a href="#_meridian">4.25. meridian</a></li>
<li><a href="#_metadata">4.26. metadata</a></li>
<li><a href="#_model_space">4.27. model space</a></li>
<li><a href="#_mosaic">4.28. mosaic</a></li>
<li><a href="#_orthorectified_grid">4.29. orthorectified grid</a></li>
<li><a href="#_parallel">4.30. parallel</a></li>
<li><a href="#_pixel">4.31. pixel</a></li>
<li><a href="#_prime_meridian">4.32. prime meridian</a></li>
<li><a href="#_projected_coordinate_system">4.33. projected coordinate system</a></li>
<li><a href="#_projection">4.34. projection</a></li>
<li><a href="#_raster">4.35. raster</a></li>
<li><a href="#_rational_tiff">4.36. rational <TIFF></a></li>
<li><a href="#_rectified_grid">4.37. rectified grid</a></li>
<li><a href="#_referenceable_grid">4.38. referenceable grid</a></li>
<li><a href="#_relative_accuracy_relative_positional_accuracy">4.39. relative accuracy / relative positional accuracy</a></li>
<li><a href="#_short">4.40. short</a></li>
<li><a href="#_tag_tiff">4.41. tag <TIFF></a></li>
</ul>
</li>
<li><a href="#_conventions">5. Conventions</a>
<ul class="sectlevel2">
<li><a href="#_abbreviations">5.1. Abbreviations</a></li>
<li><a href="#_ascii">5.2. ASCII</a></li>
<li><a href="#_epsg">5.3. EPSG</a></li>
<li><a href="#_ieee">5.4. IEEE</a></li>
<li><a href="#_ifd">5.5. IFD</a></li>
<li><a href="#_posc">5.6. POSC</a></li>
<li><a href="#_tiff">5.7. TIFF</a></li>
<li><a href="#_usgs">5.8. USGS</a></li>
<li><a href="#_identifiers">5.9. Identifiers</a></li>
</ul>
</li>
<li><a href="#_clauses_not_containing_normative_material">6. Clauses not Containing Normative Material</a></li>
<li><a href="#_requirements">7. Requirements</a>
<ul class="sectlevel2">
<li><a href="#_underlying_tiff_requirements">7.1. Underlying TIFF Requirements</a>
<ul class="sectlevel3">
<li><a href="#_requirements_class_tiff">7.1.1. Requirements Class TIFF</a></li>
<li><a href="#_requirements_class_geokeydirectorytag">7.1.2. Requirements Class GeoKeyDirectoryTag</a></li>
<li><a href="#_requirements_class_geokeycode">7.1.3. Requirements Class GeoKeyCode</a></li>
<li><a href="#_requirements_class_geoshortparams">7.1.4. Requirements Class GeoShortParams</a></li>
<li><a href="#_requirements_class_geodoubleparamstag">7.1.5. Requirements Class GeoDoubleParamsTag</a></li>
<li><a href="#_requirements_class_geoasciiparamstag">7.1.6. Requirements Class GeoAsciiParamsTag</a></li>
</ul>
</li>
<li><a href="#_coordinate_tranformation_requirements">7.2. Coordinate Tranformation Requirements</a>
<ul class="sectlevel3">
<li><a href="#_requirements_class_modeltiepointtag">7.2.1. Requirements Class ModelTiepointTag</a></li>
<li><a href="#_requirements_class_modelpixelscaletag">7.2.2. Requirements Class ModelPixelScaleTag</a></li>
<li><a href="#_requirements_class_modeltransformationtag">7.2.3. Requirements Class ModelTransformationTag</a></li>
<li><a href="#_requirements_class_intergraphmatrixtag">7.2.4. Requirements Class IntergraphMatrixTag</a></li>
</ul>
</li>
<li><a href="#_geotiff_configuration_geokeys">7.3. GeoTIFF Configuration GeoKeys</a>
<ul class="sectlevel3">
<li><a href="#_requirements_class_gtmodeltypegeokey">7.3.1. Requirements Class GTModelTypeGeoKey</a></li>
<li><a href="#_requirements_class_gtrastertypegeokey">7.3.2. Requirements Class GTRasterTypeGeoKey</a></li>
<li><a href="#_requirements_class_gtcitationgeokey">7.3.3. Requirements Class GTCitationGeoKey</a></li>
</ul>
</li>
<li><a href="#_geographic_cs_parameter_geokeys">7.4. Geographic CS Parameter GeoKeys</a>
<ul class="sectlevel3">
<li><a href="#_requirements_class_geographictypegeokey">7.4.1. Requirements Class GeographicTypeGeoKey</a></li>
<li><a href="#_requirements_class_geogcitationgeokey">7.4.2. Requirements Class GeogCitationGeoKey</a></li>
<li><a href="#_requirements_class_geoggeodeticdatumgeokey">7.4.3. Requirements Class GeogGeodeticDatumGeoKey</a></li>
<li><a href="#_requirements_class_geogprimemeridiangeokey">7.4.4. Requirements Class GeogPrimeMeridianGeoKey</a></li>
<li><a href="#_requirements_class_geogprimemeridianlonggeokey">7.4.5. Requirements Class GeogPrimeMeridianLongGeoKey</a></li>
<li><a href="#_requirements_class_geoglinearunitsgeokey">7.4.6. Requirements Class GeogLinearUnitsGeoKey</a></li>
<li><a href="#_requirements_class_geoglinearunitsizegeokey">7.4.7. Requirements Class GeogLinearUnitSizeGeoKey</a></li>
<li><a href="#_requirements_class_geogangularunitsgeokey">7.4.8. Requirements Class GeogAngularUnitsGeoKey</a></li>
<li><a href="#_requirements_class_geogangularunitsizegeokey">7.4.9. Requirements Class GeogAngularUnitSizeGeoKey</a></li>
<li><a href="#_requirements_class_geogellipsoidgeokey">7.4.10. Requirements Class GeogEllipsoidGeoKey</a></li>
<li><a href="#_requirements_class_geogsemimajoraxisgeokey">7.4.11. Requirements Class GeogSemiMajorAxisGeoKey</a></li>
<li><a href="#_requirements_class_geogsemiminoraxisgeokey">7.4.12. Requirements Class GeogSemiMinorAxisGeoKey</a></li>
<li><a href="#_requirements_class_geoginvflatteninggeokey">7.4.13. Requirements Class GeogInvFlatteningGeoKey</a></li>
<li><a href="#_requirements_class_geogazimuthunitsgeokey">7.4.14. Requirements Class GeogAzimuthUnitsGeoKey</a></li>
</ul>
</li>
<li><a href="#_projected_cs_parameter_geokeys">7.5. Projected CS Parameter GeoKeys</a>
<ul class="sectlevel3">
<li><a href="#_requirements_class_projectedcstypegeokey">7.5.1. Requirements Class ProjectedCSTypeGeoKey</a></li>
<li><a href="#_requirements_class_pcscitationgeokey">7.5.2. Requirements Class PCSCitationGeoKey</a></li>
</ul>
</li>
<li><a href="#_projection_definition_geokeys">7.6. Projection Definition GeoKeys</a>
<ul class="sectlevel3">
<li><a href="#_requirements_class_projectiongeokey">7.6.1. Requirements Class ProjectionGeoKey</a></li>
<li><a href="#_requirements_class_projcoordtransgeokey">7.6.2. Requirements Class ProjCoordTransGeoKey</a></li>
<li><a href="#_requirements_class_projlinearunitsgeokey">7.6.3. Requirements Class ProjLinearUnitsGeoKey</a></li>
<li><a href="#_requirements_class_projlinearunitsizegeokey">7.6.4. Requirements Class ProjLinearUnitSizeGeoKey</a></li>
<li><a href="#_requirements_class_projstdparallel1geokey">7.6.5. Requirements Class ProjStdParallel1GeoKey</a></li>
<li><a href="#_requirements_class_projstdparallel2geokey">7.6.6. Requirements Class ProjStdParallel2GeoKey</a></li>
<li><a href="#_requirements_class_projnatoriginlonggeokey">7.6.7. Requirements Class ProjNatOriginLongGeoKey</a></li>
<li><a href="#_requirements_class_projnatoriginlatgeokey">7.6.8. Requirements Class ProjNatOriginLatGeoKey</a></li>
<li><a href="#_requirements_class_projfalseeastinggeokey">7.6.9. Requirements Class ProjFalseEastingGeoKey</a></li>
<li><a href="#_requirements_class_projfalsenorthinggeokey">7.6.10. Requirements Class ProjFalseNorthingGeoKey</a></li>
<li><a href="#_requirements_class_projfalseoriginlonggeokey">7.6.11. Requirements Class ProjFalseOriginLongGeoKey</a></li>
<li><a href="#_requirements_class_projfalseoriginlatgeokey">7.6.12. Requirements Class ProjFalseOriginLatGeoKey</a></li>
<li><a href="#_requirements_class_projfalseorigineastinggeokey">7.6.13. Requirements Class ProjFalseOriginEastingGeoKey</a></li>
<li><a href="#_requirements_class_projfalseoriginnorthinggeokey">7.6.14. Requirements Class ProjFalseOriginNorthingGeoKey</a></li>
<li><a href="#_requirements_class_projcenterlonggeokey">7.6.15. Requirements Class ProjCenterLongGeoKey</a></li>
<li><a href="#_requirements_class_projcenterlatgeokey">7.6.16. Requirements Class ProjCenterLatGeoKey</a></li>
<li><a href="#_requirements_class_projcentereastinggeokey">7.6.17. Requirements Class ProjCenterEastingGeoKey</a></li>
<li><a href="#_requirements_class_projcenternorthinggeokey">7.6.18. Requirements Class ProjCenterNorthingGeoKey</a></li>
<li><a href="#_requirements_class_projscaleatnatorigingeokey">7.6.19. Requirements Class ProjScaleAtNatOriginGeoKey</a></li>
<li><a href="#_requirements_class_projscaleatcentergeokey">7.6.20. Requirements Class ProjScaleAtCenterGeoKey</a></li>
<li><a href="#_requirements_class_projazimuthanglegeokey">7.6.21. Requirements Class ProjAzimuthAngleGeoKey</a></li>
<li><a href="#_requirements_class_projstraightvertpolelonggeokey">7.6.22. Requirements Class ProjStraightVertPoleLongGeoKey</a></li>
</ul>
</li>
<li><a href="#_vertical_cs_parameter_keys">7.7. Vertical CS Parameter Keys</a>
<ul class="sectlevel3">
<li><a href="#_requirements_class_verticalcstypegeokey">7.7.1. Requirements Class VerticalCSTypeGeoKey</a></li>
<li><a href="#_requirements_class_verticalcitationgeokey">7.7.2. Requirements Class VerticalCitationGeoKey</a></li>
<li><a href="#_requirements_class_verticaldatumgeokey">7.7.3. Requirements Class VerticalDatumGeoKey</a></li>
<li><a href="#_requirements_class_verticalunitsgeokey">7.7.4. Requirements Class VerticalUnitsGeoKey</a></li>
</ul>
</li>
</ul>
</li>
<li><a href="#_media_types_for_any_data_encodings">8. Media Types for any data encoding(s)</a></li>
<li><a href="#_conformance_class_abstract_test_suite_normative">Annex A: Conformance Class Abstract Test Suite (Normative)</a>
<ul class="sectlevel2">
<li><a href="#_conformance_class_a">A.1. Conformance Class A</a>
<ul class="sectlevel3">
<li><a href="#_requirement_1">A.1.1. Requirement 1</a></li>
<li><a href="#_requirement_2">A.1.2. Requirement 2</a></li>
</ul>
</li>
</ul>
</li>
<li><a href="#_the_geotiff_file_structure_informative">Annex B: The GeoTIFF File Structure (Informative)</a>
<ul class="sectlevel2">
<li><a href="#_introduction">B.1. Introduction</a></li>
<li><a href="#_geotiff_design_considerations">B.2. GeoTIFF Design Considerations</a></li>
<li><a href="#_geotiff_software_requirements">B.3. GeoTIFF Software Requirements</a></li>
<li><a href="#_geotiff_file_and_key_structure">B.4. GeoTIFF File and "Key" Structure</a></li>
<li><a href="#_coordinate_reference_systems_in_geotiff">B.5. Coordinate Reference Systems in GeoTIFF</a>
<ul class="sectlevel3">
<li><a href="#_device_space_and_geotiff">B.5.1. Device Space and GeoTIFF</a></li>
<li><a href="#_raster_coordinate_systems">B.5.2. Raster Coordinate Systems</a></li>
<li><a href="#_model_coordinate_reference_systems">B.5.3. Model Coordinate Reference Systems</a></li>
<li><a href="#_reference_parameters">B.5.4. Reference Parameters</a></li>
</ul>
</li>
<li><a href="#_coordinate_transformations">B.6. Coordinate Transformations</a>
<ul class="sectlevel3">
<li><a href="#_geotiff_tags_for_coordinate_transformations">B.6.1. GeoTIFF Tags for Coordinate Transformations</a></li>
<li><a href="#_coordinate_transformation_data_flow">B.6.2. Coordinate Transformation Data Flow</a></li>
<li><a href="#_cookbook_for_defining_transformations">B.6.3. Cookbook for Defining Transformations</a></li>
</ul>
</li>
<li><a href="#_geocoding_raster_data">B.7. Geocoding Raster Data</a>
<ul class="sectlevel3">
<li><a href="#_general_approach">B.7.1. General Approach</a></li>
</ul>
</li>
<li><a href="#_examples">B.8. Examples</a>
<ul class="sectlevel3">
<li><a href="#_common_examples">B.8.1. Common Examples</a></li>
<li><a href="#_less_common_examples">B.8.2. Less Common Examples</a></li>
</ul>
</li>
</ul>
</li>
<li><a href="#_revision_history">Annex C: Revision History</a></li>
<li><a href="#Bibliography">Annex D: Bibliography</a></li>
</ul>
</div>
<div style="page-break-after: always;"></div>
<div class="paragraph">
<p><strong class="big">i. Abstract</strong></p>
</div>
<div class="paragraph">
<p>This profile specifies the requirements and encoding rules for using the Tagged Image File Format (TIFF) for the exchange of georeferenced imagery. It formalizes the existing community standard for the
Geographic Tagged Image File Format (GeoTIFF) file format.</p>
</div>
<div class="paragraph">
<p><strong class="big">ii. Keywords</strong></p>
</div>
<div class="paragraph">
<p>The following are keywords to be used by search engines and document catalogues.</p>
</div>
<div class="paragraph">
<p>ogcdoc, OGC document, geotiff, tiff</p>
</div>
<div class="paragraph">
<p><strong class="big">iii. Preface</strong></p>
</div>
<div class="paragraph">
<p>The GeoTIFF format was initially developed during the early 1990’s (N. Ritter & Ruth, 1997) in order to leverage a mature platform independent file format (TIFF) by adding metadata required for describing and using geographic image data. TIFF met the requirements for an underlying format, as it was lossless and extensible. In September 1994, SPOT Image Corp proposed a GeoTIFF structure that was limited to Universal Transverse Mercator (N. Ritter & Ruth, 1997). The proposed GeoTIFF specification has augmented and formalized by Niles and Ruth as Revision 1.0, specification version 1.8.2 in November 1995 (N. Ritter & Ruth,1995). This specification is currently the official GeoTIFF specification (GeoTIFF, n.d).</p>
</div>
<div class="paragraph">
<p>The GeoTIFF format is used throughout the geospatial and earth science communities to share geographic image data. That usage inevitably leads to identification of new requirements and needs for profiles, extensions, and improvements to the original GeoTIFF Specification. The OGC is well established as a forum for standardization in the GeoTIFF producer and user communities and, as such, it provides an inclusive standardization process for those communities. This document is the first step in the process of integration of the GeoTIFF into that standardization process. Once GeoTIFF is ensconced in the OGC, the standard can be evolved using a formal process.</p>
</div>
<div class="paragraph">
<p>Suggested additions, changes, and comments on this standard are welcome and encouraged. Such suggestions may be submitted by email message or by submitting an official OGC Change Request using the online CR application:</p>
</div>
<div class="literalblock">
<div class="content">
<pre>https://portal.opengeospatial.org/public_ogc/change_request.php</pre>
</div>
</div>
<div class="paragraph">
<p>Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The Open Geospatial Consortium shall not be held responsible for identifying any or all such patent rights.</p>
</div>
<div class="paragraph">
<p>Recipients of this document are requested to submit, with their comments, notification of any relevant patent claims or other intellectual property rights of which they may be aware that might be infringed by any implementation of the standard set forth in this document, and to provide supporting documentation.</p>
</div>
<div class="paragraph">
<p><strong class="big">iv. Submitting organizations</strong></p>
</div>
<div class="paragraph">
<p>The following organizations submitted this Document to the Open Geospatial Consortium (OGC):</p>
</div>
<div class="paragraph">
<p>The HDF Group</p>
</div>
<div class="paragraph">
<p><strong class="big">v. Submitters</strong></p>
</div>
<div class="paragraph">
<p>All questions regarding this submission should be directed to the editor or the submitters:</p>
</div>
<table class="tableblock frame-all grid-all stretch">
<colgroup>
<col style="width: 50%;">
<col style="width: 50%;">
</colgroup>
<tbody>
<tr>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Name</p></td>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Affiliation</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Ted Habermann</p></td>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">The HDF Group</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Emmanuel Devys</p></td>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">IGN</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Charles Heazel</p></td>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Heazeltech LLC</p></td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="sect1">
<h2 id="_scope"><a class="anchor" href="#_scope"></a>1. Scope</h2>
<div class="sectionbody">
<div class="paragraph">
<p>This OGC<strong>®</strong> Standard defines a set of TIFF tags provided to describe all "Cartographic" information associated with TIFF imagery that originates from satellite imaging systems, scanned aerial photography, scanned maps, digital elevation models, or as a result of geographic analyses. Its aim is to allow means for tying a raster image to a known model space or map projection, and for describing those projections. This OGC<strong>®</strong> Standard defines the Geographic Tagged Image File Format (GeoTIFF) file format and the requirements to which every GeoTIFF file must adhere. It focuses on updating the current GeoTIFF community specification and aligning it with current OGC standardization practice.</p>
</div>
<div class="paragraph">
<p>The tags documented in this spec are to be considered completely orthogonal to the raster-data descriptions of the TIFF spec, and impose no restrictions on how the standard TIFF tags are to be interpreted, which color spaces or compression types are to be used, etc.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_conformance"><a class="anchor" href="#_conformance"></a>2. Conformance</h2>
<div class="sectionbody">
<div class="paragraph">
<p>This standard defines 120 Requirements grouped into 29 Requirements Classes.</p>
</div>
<div class="paragraph">
<p>These Requirements address five (5) standardization target types:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>Underlying TIFF Requirements</p>
</li>
<li>
<p>GeoTIFF Configuration GeoKeys</p>
</li>
<li>
<p>Geographic CS Parameter GeoKeys</p>
</li>
<li>
<p>Projected CS Parameter GeoKeys</p>
</li>
<li>
<p>Vertical CS Parameter GeoKeys</p>
</li>
</ul>
</div>
<div class="paragraph">
<p>Conformance with this standard shall be checked using all the relevant tests specified in Annex A (normative) of this document. The framework, concepts, and methodology for testing, and the criteria to be achieved to claim conformance are specified in the OGC Compliance Testing Policies and Procedures and the OGC Compliance Testing web site.</p>
</div>
<div class="paragraph">
<p>In order to conform to this OGC® encoding standard, a software implementation shall comply with all of the conformance classes specified in Annex A (normative).</p>
</div>
<div class="paragraph">
<p>This version 1.0 of the OGC® GeoTIFF standard is a formalized version of the GeoTIFF specification currently in common use. Any discrepencies between this specification and the community GeoTIFF standard identified in Chapter 3 should be brought to the attention of the OGC® for resolution.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_references"><a class="anchor" href="#_references"></a>3. References</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The following normative documents contain provisions that, through
reference in this text, constitute provisions of this document. For
dated references, subsequent amendments to, or revisions of, any of
these publications do not apply. For undated references, the latest
edition of the normative document referred to applies.</p>
</div>
<div class="ulist">
<ul>
<li>
<p>Association Adobe Developers, <strong><em>TIFF Specification Revision 6.0</em></strong>, June 3, 1992</p>
</li>
<li>
<p>Ritter, Niles & Ruth, Mike, <strong><em>GeoTIFF Format Specification</em></strong>, October 31, 1995</p>
</li>
</ul>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_terms_and_definitions"><a class="anchor" href="#_terms_and_definitions"></a>4. Terms and Definitions</h2>
<div class="sectionbody">
<div class="paragraph">
<p>This document uses the terms defined in Sub-clause 5.3 of [OGC 06-121r8], which is based on the ISO/IEC Directives, Part 2, Rules for the structure and drafting of International Standards. In particular, the word “shall” (not “must”) is the verb form used to indicate a requirement to be strictly followed to conform to this standard.</p>
</div>
<div class="paragraph">
<p>For the purposes of this document, the following additional terms and definitions apply.</p>
</div>
<div class="sect2">
<h3 id="_band"><a class="anchor" href="#_band"></a>4.1. band</h3>
<div class="paragraph">
<p>well-defined range of wavelengths, frequencies or energies of optical, electric or acoustic radiation</p>
</div>