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GeoTIFF-SWG_Charter.html
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GeoTIFF-SWG_Charter.html
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<title>GeoTIFF Standards Working Group Charter</title>
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</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">
<colgroup>
<col style="width: 100%;">
</colgroup>
<tbody>
<tr>
<td class="tableblock halign-right valign-top" style="background-color: #FFFFFF;"></td>
</tr>
<tr>
<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: 2020-12-17</p></td>
</tr>
<tr>
<td class="tableblock halign-right valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Approval Date: <yyyy-mm-dd></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: 14-018r5</p></td>
</tr>
<tr>
<td class="tableblock halign-right valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Category: OGC® Standards Working Group Charter</p></td>
</tr>
<tr>
<td class="tableblock halign-right valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Authors: Emmanuel Devys, Scott Simmons, Chuck Heazel</p></td>
</tr>
</tbody>
</table>
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<col style="width: 100%;">
</colgroup>
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<tr>
<td class="tableblock halign-center valign-top" style="background-color: #FFFFFF;"><p class="tableblock"><strong class="big">GeoTIFF Standards Working Group Charter</strong></p></td>
</tr>
</tbody>
</table>
<table class="tableblock frame-none grid-none stretch">
<colgroup>
<col style="width: 100%;">
</colgroup>
<tbody>
<tr>
<td class="tableblock halign-center valign-top" style="background-color: #FFFFFF;"><p class="tableblock"><strong>Copyright notice</strong></p></td>
</tr>
<tr>
<td class="tableblock halign-center valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Copyright © 2020 Open Geospatial Consortium</p></td>
</tr>
<tr>
<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>
</tr>
</tbody>
</table>
<div style="page-break-after: always;"></div>
<div class="paragraph">
<p>To: OGC members & interested parties</p>
</div>
<div class="paragraph">
<p>The OGC members listed below have proposed the OGC GeoTIFF SWG be re-chartered with an expanded scope as described below. The SWG proposal provided in this document meets the requirements of the OGC Technical Committee (TC) Policies and Procedures.</p>
</div>
<div class="paragraph">
<p>The SWG name, statement of purpose, scope, list of deliverables, audience, and language specified in the proposal will constitute the SWG’s official charter.</p>
</div>
<div class="paragraph">
<p>This SWG will operate under the OGC IPR Policy. The eligibility requirements for becoming a participant in the SWG are that:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>You must be an employee of an OGC member organization or an individual
member of OGC;</p>
</li>
<li>
<p>The OGC member must have signed the OGC Membership agreement;</p>
</li>
<li>
<p>You must notify the SWG chair of your intent to participate. Members may do so by logging onto the OGC Portal and navigating to the Observer page and clicking on the link for the SWG they wish to join and;</p>
</li>
<li>
<p>You must attend meetings of the SWG. Attendance may be by teleconference.</p>
</li>
</ul>
</div>
<div class="paragraph">
<p>Of course, participants also may join the SWG at any time. The OGC and the SWG welcomes all interested parties.</p>
</div>
<div class="paragraph">
<p>Non-OGC members who wish to participate may contact us about joining the OGC. In addition, the public may access some of the resources maintained for each SWG: the SWG public description, the SWG Charter, Change Requests, and public comments, which will be linked from the SWG’s page.</p>
</div>
<div class="paragraph">
<p>Please feel free to forward this announcement to any other appropriate lists. The OGC is an open standards organization; we encourage your feedback.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_purpose_of_the_standards_working_group"><a class="anchor" href="#_purpose_of_the_standards_working_group"></a>1. Purpose of the Standards Working Group</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The GeoTIFF specification as an extension to the TIFF format has been used for sharing coverage data successfully for years across many platforms and software environments. It is an important de facto standard used primarily for geolocated images. The legacy GeoTIFF specification (Version 1.8.2) was developed during the 1990’s by a group of interested individuals and has served the community very well since then.</p>
</div>
<div class="paragraph">
<p>The initial scope of this SWG was to incorporate the GeoTIFF specification into the OGC standards suite by updating the specification to bring it into conformance with current OGC practices. The resulting Standard was approved by the OGC Technical Committee in September 2019.</p>
</div>
<div class="paragraph">
<p>The original scope also specified that the SWG would:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>"provide a forum for evolving the standard in the future"</p>
</li>
<li>
<p>"maintain compatibility with existing geoTIFF community implementations and practices" and that</p>
</li>
<li>
<p>"future evolution would be done in close cooperation with the existing geoTIFF community."</p>
</li>
</ul>
</div>
<div class="paragraph">
<p>A number of additional work items have been identified for this SWG since completion of OGC GeoTIFF 1.1. This updated charter brings those work items into the scope of the GeoTIFF Standards Working Group.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_business_value_proposition"><a class="anchor" href="#_business_value_proposition"></a>2. Business Value Proposition</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The GeoTIFF format is ubiquitous in the geospatial community and is currently used and supported in its ad hoc form by many OCG members. The format forms the basis for sharing a large existing collection of geospatial images and coverage data, it clearly benefits those members to have the standard managed by the OGC membership.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_scope_of_work"><a class="anchor" href="#_scope_of_work"></a>3. Scope of Work</h2>
<div class="sectionbody">
<div class="paragraph">
<p>This updated charter brings additional work items into the scope of the GeoTIFF Standards Working Group. The starting point for those work items is the OGC GeoTIFF 1.1 Standard. This standard is available from <a href="https://www.ogc.org/standards/geotiff">https://www.ogc.org/standards/geotiff</a>. The additional work items are described in the <a href="#additional-swg-tasks">Additional SWG Tasks</a> section.</p>
</div>
<div class="sect2">
<h3 id="_statement_of_relationship_of_planned_work_to_the_current_ogc_standards_baseline"><a class="anchor" href="#_statement_of_relationship_of_planned_work_to_the_current_ogc_standards_baseline"></a>3.1. Statement of relationship of planned work to the current OGC Standards baseline</h3>
<div class="paragraph">
<p>The GeoTIFF / TIFF format is currently included in extensions the OGC GML Coverages (GMLCOV) 1.0 Standard to the OGC Web Coverage Service (WCS) 2.0 Standard. Standardization of the format will solidify these existing standards.</p>
</div>
</div>
<div class="sect2">
<h3 id="_what_is_out_of_scope"><a class="anchor" href="#_what_is_out_of_scope"></a>3.2. What is Out of Scope?</h3>
<div class="paragraph">
<p>The SWG will not work on any tasks not explicitly listed in this charter or an ammended version thereof.</p>
</div>
</div>
<div class="sect2">
<h3 id="_specific_existing_work_used_as_starting_point"><a class="anchor" href="#_specific_existing_work_used_as_starting_point"></a>3.3. Specific Existing Work Used as Starting Point</h3>
<div class="paragraph">
<p>The OGC GeoTIFF 1.1 Standard is available from <a href="https://www.ogc.org/standards/geotiff">https://www.ogc.org/standards/geotiff</a>. It will serve as the starting point for any additional work by this SWG.</p>
</div>
</div>
<div class="sect2">
<h3 id="_is_this_a_persistent_swg"><a class="anchor" href="#_is_this_a_persistent_swg"></a>3.4. Is This a Persistent SWG</h3>
<div class="paragraph">
<p>[x] YES</p>
</div>
<div class="paragraph">
<p>[ ] NO</p>
</div>
</div>
<div class="sect2">
<h3 id="_when_can_the_swg_be_inactivated"><a class="anchor" href="#_when_can_the_swg_be_inactivated"></a>3.5. When can the SWG be Inactivated</h3>
<div class="paragraph">
<p>The GeoTIFF SWG charter includes the charge to "provide a forum for evolving the standard in the future". Therefore, the SWG cannot be inactivated while GeoTIFF is an approved OGC standard.</p>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_description_of_deliverables"><a class="anchor" href="#_description_of_deliverables"></a>4. Description of deliverables</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="_initial_deliverables"><a class="anchor" href="#_initial_deliverables"></a>4.1. Initial Deliverables</h3>
<div class="paragraph">
<p>The OGC GeoTIFF 1.1 Standard was approved by the OGC Technical Committee in September 2019. Since then, additional work items have been identified which build on that baseline. The deliveries and schedules for these work items are described by task in the <a href="#additional-swg-tasks">Additional SWG Tasks</a> section.</p>
</div>
</div>
<div class="sect2">
<h3 id="additional-swg-tasks"><a class="anchor" href="#additional-swg-tasks"></a>4.2. Additional SWG Tasks</h3>
<div class="sect3">
<h4 id="_task_1_geotiff_1_2"><a class="anchor" href="#_task_1_geotiff_1_2"></a>4.2.1. Task 1: GeoTIFF 1.2</h4>
<div class="paragraph">
<p>This task will address open issues which were out of scope for version 1.1 but not significant enough for a major revision. GeoTIFF 1.2 shall maintain backward compatibililty with GeoTIFF 1.1.</p>
</div>
</div>
<div class="sect3">
<h4 id="_task_2_bigtiff_support"><a class="anchor" href="#_task_2_bigtiff_support"></a>4.2.2. Task 2: BigTiff support</h4>
<div class="paragraph">
<p>The TIFF file format uses 32 bit offsets. This limits TIFF files to four gigabytes. The BigTIFF format resembles TIFF but uses 64 bit offsets instead. GeoTIFF 1.1 will be extended to enable bigTIFF (in addition to TIFF).</p>
</div>
</div>
<div class="sect3">
<h4 id="_task_3_standardize_cloud_optimized_geotiff_cog"><a class="anchor" href="#_task_3_standardize_cloud_optimized_geotiff_cog"></a>4.2.3. Task 3: Standardize Cloud-Optimized GeoTIFF (COG)</h4>
<div class="paragraph">
<p>The COG community is willing to turn-over management of the COG specification to OGC. OGC shall establish a GeoTIFF/TIFF standard or best practice that fully documents the COG format in the manner of an OGC specification.</p>
</div>
</div>
<div class="sect3">
<h4 id="_task_4_geotiff_las_harmonization"><a class="anchor" href="#_task_4_geotiff_las_harmonization"></a>4.2.4. Task 4: GeoTIFF / LAS harmonization</h4>
<div class="paragraph">
<p>This task will examine the overlap between GeoTIFF and LAS. The deliverable will be recommendations on how to keep these two standards synchronized.</p>
</div>
</div>
<div class="sect3">
<h4 id="_task_5_data_cubes"><a class="anchor" href="#_task_5_data_cubes"></a>4.2.5. Task 5: Data Cubes</h4>
<div class="paragraph">
<p>This task will explore the potential of GeoTIFF to support analytics including coverages and data cubes.</p>
</div>
</div>
<div class="sect3">
<h4 id="_task_6_geotiff_2_0"><a class="anchor" href="#_task_6_geotiff_2_0"></a>4.2.6. Task 6: GeoTIFF 2.0</h4>
<div class="paragraph">
<p>This task will examine issues which cannot be addressed within the scope of a minor update (GeoTIFF 1.2).</p>
</div>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_ipr_policy_for_this_swg"><a class="anchor" href="#_ipr_policy_for_this_swg"></a>5. IPR Policy for this SWG</h2>
<div class="sectionbody">
<div class="paragraph">
<p>[x] RAND-Royalty Free</p>
</div>
<div class="paragraph">
<p>[ ] RAND for fee</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_anticipated_audience_participants"><a class="anchor" href="#_anticipated_audience_participants"></a>6. Anticipated Audience / Participants</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The NASA, NOAA, USGS, DGIWG, IGN, NGA, TBD after discussion</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_domain_working_group_endorsement"><a class="anchor" href="#_domain_working_group_endorsement"></a>7. Domain Working Group Endorsement</h2>
<div class="sectionbody">
<div class="paragraph">
<p>No applicable at time of chartering.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_other_informative_information_about_the_work_of_this_swg"><a class="anchor" href="#_other_informative_information_about_the_work_of_this_swg"></a>8. Other informative information about the work of this SWG</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="_collaboration"><a class="anchor" href="#_collaboration"></a>8.1. Collaboration</h3>
<div class="paragraph">
<p>The GeoTIFF SWG is using and will continue to use GitHub for management of Standard document and related content.</p>
</div>
</div>
<div class="sect2">
<h3 id="_similar_or_applicable_standards_work_ogc_and_elsewhere"><a class="anchor" href="#_similar_or_applicable_standards_work_ogc_and_elsewhere"></a>8.2. Similar or Applicable Standards Work (OGC and Elsewhere)</h3>
<div class="paragraph">
<p>The GeoTIFF Specification has been developed and maintained on the <a href="http://trac.osgeo.org" class="bare">http://trac.osgeo.org</a> website. This SWG will stay in touch with that group and as this work progresses.</p>
</div>
</div>
<div class="sect2">
<h3 id="_details_of_first_meeting"><a class="anchor" href="#_details_of_first_meeting"></a>8.3. Details of first meeting</h3>
<div class="paragraph">
<p>Not Applicable</p>
</div>
</div>
<div class="sect2">
<h3 id="_projected_on_going_meeting_schedule"><a class="anchor" href="#_projected_on_going_meeting_schedule"></a>8.4. Projected on-going meeting schedule</h3>
<div class="paragraph">
<p>TBD</p>
</div>
</div>
<div class="sect2">
<h3 id="_supporters_of_this_charter"><a class="anchor" href="#_supporters_of_this_charter"></a>8.5. Supporters of this Charter</h3>
<div class="paragraph">
<p>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. The charter members agree to the SoW and IPR terms as defined in this charter. The charter members have voting rights beginning the day the SWG is officially formed. Charter Members are shown on the public SWG page. Extend the table as necessary.</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">Organization</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, France</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Steve Olding</p></td>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">NASA</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Chuck Heazel</p></td>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Heazeltech</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Keith Ryden</p></td>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">ESRI</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Amy Youmans</p></td>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">US Army Geospatial Center</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Pedro Gonçalves</p></td>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Terradue</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Roger Lott</p></td>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">IOGP</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Howard Butler</p></td>
<td class="tableblock halign-left valign-top" style="background-color: #FFFFFF;"><p class="tableblock">Hobu Inc.</p></td>
</tr>
</tbody>
</table>
</div>
<div class="sect2">
<h3 id="_conveners"><a class="anchor" href="#_conveners"></a>8.6. Conveners</h3>
<div class="paragraph">
<p>Emmanuel Devys - IGN,
Chuck Heazel - HeazelTech,
Even Rouault - Spatialys</p>
</div>
</div>
</div>
</div>
</div>
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Last updated 2021-01-14 14:44:59 UTC
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