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Alignment of Clauses 4 terms and 5 Conventions #64

Closed EmDevys closed 5 years ago

EmDevys commented 5 years ago

taking account of comments from Reese Plews

EmDevys commented 5 years ago

Even But the orthorectified grid / orthoimage entry is also using (in its 2nd definition) based on “georectified grid” term, so I guess this is correct.

De : Even Rouault [mailto:notifications@github.com] Envoyé : dimanche 6 janvier 2019 18:16 À : opengeospatial/geotiff Cc : Emmanuel Devys; Author Objet : Re: [opengeospatial/geotiff] Alignment of Clauses 4 terms and 5 Conventions (#64)

@rouault commented on this pull request.

In GeoTIFF_Standard/standard/clause_4_terms_and_definitions.adochttps://github.com/opengeospatial/geotiff/pull/64#discussion_r245515570:

=== rectified grid

+georectified grid

rectified grid / georectified grid are not mentionned elsewhere than in this section. To be deleted ? orthorectified is mentionned in annex-b as can be seen below and we have an entry for it already

$ grep -r "rectified" .

./clause_4_terms_and_definitions.adoc:=== georectified grid

./clause_4_terms_and_definitions.adoc:rectified grid

./clause_4_terms_and_definitions.adoc:Note 1 to entry: If the coordinate reference system is related to the earth by a datum, the grid is a georectified grid.

./clause_4_terms_and_definitions.adoc:=== orthorectified grid

./clause_4_terms_and_definitions.adoc:georectified grid created using ground control points and elevation data where constant scale is maintained throughout the grid

./annex-b.adoc: Case 5: The raster data cannot be fit into the model space with a simple affine transformation (rubber-sheeting required). Use only the ModelTiepoint tag, and specify as many tiepoints as your application requires. Note, however, that this is not a Baseline GeoTIFF implementation, and should not be used for interchange; it is recommended that the image be geometrically rectified first, and put into a standard projected coordinate reference system.

./annex-b.adoc:We have an aerial photo which has been orthorectified and resampled to a UTM grid, zone 60, using WGS 84 coordinate reference system; the coordinates of the upper-left corner of the image is are given in easting/northing, as 350807.4m, 5316081.3m. The scanned map pixel scale is 100 meters/pixels (the actual dpi scanning ratio is irrelevant).

./annex-b.adoc:===== Unrectified Aerial photo, known tiepoints, in degrees.

In GeoTIFF_Standard/standard/clause_4_terms_and_definitions.adochttps://github.com/opengeospatial/geotiff/pull/64#discussion_r245515589:

=== referenceable grid

+georeferenceable grid

referenceable grid / georeferenceable grid is not not mentionned elsewhere than in this section. To be deleted ?

$ grep -r referenceable .

./clause_4_terms_and_definitions.adoc:=== referenceable grid

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rouault commented 5 years ago

But the orthorectified grid / orthoimage entry is also using (in its 2nd definition) based on “georectified grid” term, so I guess this is correct.

indeed