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https://issues.apache.org/jira/browse/TIKA-4781?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18095385#comment-18095385
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ASF GitHub Bot commented on TIKA-4781:
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tballison merged PR #2941:
URL: https://github.com/apache/tika/pull/2941
> Map EXIF GPS altitude to the existing geo:alt property
> ------------------------------------------------------
>
> Key: TIKA-4781
> URL: https://issues.apache.org/jira/browse/TIKA-4781
> Project: Tika
> Issue Type: Improvement
> Reporter: Dominik Schmidt
> Priority: Major
>
> ImageMetadataExtractor's GeotagHandler maps latitude, longitude and the
> GPS timestamp from the EXIF GpsDirectory, but not the altitude, although
> tika-core defines Geographic.ALTITUDE ("geo:alt") and metadata-extractor
> exposes the value in the same directory (TAG_ALTITUDE / TAG_ALTITUDE_REF).
> Consumers currently only get the raw string ("GPS:GPS Altitude" = "227.4
> metres").
> The altitude should be set as a signed value honoring the altitude ref
> (below sea level = negative), analogous to TIKA-4425, which added the
> normalized GPS timestamp from the same GpsDirectory. See also TIKA-2861
> for the corresponding ISO 6709 altitude handling in MP4/QuickTime.
>
> Willing to work on this!
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