fixes to jhove module geotiff-GeoTiffStrings

[ghost]

Several Bugs have been found in current GeoTiff-extraction of jhove-module:tiff:geotiff

jhove-modules/src/main/java/edu/harvard/hul/ois/jhove/module/tiff/GeoTiffStrings.java

For example

• double keys (due to copy&paste-error already at the source website)

GeoTiffStrings.java:

...26774, 26774,
26775, 26775, 26776, 26776, 26777, 26777,...

online resource (http://geotiff.maptools.org/spec/geotiff6.html):

PCS_NAD27_BLM_14N_feet = 26774

PCS_NAD27_Indiana_West = 26774

PCS_NAD27_BLM_15N_feet = 26775

PCS_NAD27_Iowa_North = 26775

PCS_NAD27_BLM_16N_feet = 26776

PCS_NAD27_Iowa_South = 26776

PCS_NAD27_BLM_17N_feet = 26777

PCS_NAD27_Kansas_North = 26777

• missing code pair's: 16k-keys in PROJECTION

e.g. 16125 = UTM zone 25S

already missing in online resource: (http://geotiff.maptools.org/spec/geotiff6.html)

but is defined in online resource: (https://sno.phy.queensu.ca/~phil/exiftool/TagNames/GeoTiff.html)

• also differenting array sizes of index and mapped strings, which leads to wrong mapping

---

Work

created a java project that parses the code-pairs from both mentioned websites

• https://sno.phy.queensu.ca/~phil/exiftool/TagNames/GeoTiff.html
• http://geotiff.maptools.org/spec/geotiff6.html

Then

• printout the array-code for GeoTiffStrings.java
• Tests the result of GeoTiffStrings.java for array-sizes and chosen keyvalue-pairs

jhove-modules/src/test/java/edu/harvard/hul/ois/jhove/module/tiff/GeoTiffStringsTest.java

The whole project can be found here:

https://github.com/VinzenzBauer/geotiff_htmlparser4jhove.git

[carlwilson]

Closes #368

[ghost]

In our latest Test of Geotiff we came across a GeoTiff Code 25833.
Which is currently unknown to JHOVE - output:
ProjectedCSType: 25833
This code is within the range of the defined section of Projected CS Type:
[20000, 32760] = EPSG Projection System codes
Therefore it should be added to the internal geotiff-string-database. I'v added a 3rd source for collecting those pairs, because the first 2 obviously where not enough.
Both sources:

• https://sno.phy.queensu.ca/~phil/exiftool/TagNames/GeoTiff.html#VerticalCS
• http://geotiff.maptools.org/spec/geotiff6.html#6.3.3.1

have no information about this specific Code, but:

• https://github.com/ufz/geotiff/blob/master/csv/alias.csv

does contain this information. Also a lot of other pairs which were unknown before.
The only part that i see critical is the fact that there are a lot of pairs outside the predefined ranges of geotiff-spec 1.0. All Codes that are not inside the defined ranges are currently not collected. Which should be open for Discussion.

Anyway the new data-set should improve the mapping of codes for the geotiff-module in jhove even more.