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GeoTIFF encoding profile for CIS 1.1 GeneralGridCoverage #22

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jerstlouis opened this issue Nov 12, 2021 · 3 comments
Open

GeoTIFF encoding profile for CIS 1.1 GeneralGridCoverage #22

jerstlouis opened this issue Nov 12, 2021 · 3 comments

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@jerstlouis
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jerstlouis commented Nov 12, 2021

The OGC® GML Application Schema - Coverages - GeoTIFF Coverage Encoding Profile specifies the use of CIS 1.0 coverage types to be deprecated. We should define a new profile based on CIS 1.1 GeneralGridCoverage.

The GeoTIFF encoding profile notes about PixelIsArea also suffer from moving origin at different resolutions and mismatched envelope / extent / domain, and do not match the proposal in #6 to properly distinguish between ValueIsPoint / ValueIsArea in CIS 1.1. In particular, the proposal solves clashes and inconsistencies from not being able to describe the actual extent of the data, and being able to retrieve both a map and a coverage from the same OGC API - Common - Part 2 "collection".
Since this is defined for the GMLCOV coverage classes that may be deprecated, perhaps that is not a major issue. We probably need a new version of the GeoTIFF encoding profile for CIS 1.1 because this profile requires one of the types to be deprecated anyways.

@ghobona
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ghobona commented Nov 12, 2021

@jerstlouis @cmheazel @EmDevys

It would also be great if the next version of the CIS GeoTIFF Profile references the OGC GeoTIFF 1.1 standard, if possible.

@EmDevys
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EmDevys commented Nov 12, 2021 via email

@jerstlouis
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jerstlouis commented Nov 16, 2021

A new GeoTIFF CIS 1.1 profile could possibly rely on extended TIFF tags to directly encode the CIS DomainSet / RangeType information inside the file and properly associate GeoTIFF bands with range value fields and/or a temporal axis without relying on a separate GML or JSON encoded file that can get dissociated and lost.

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