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From "Gary Gregory (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IMAGING-112) JpegIptcRewriter.removeIPTC() does not remove all metadata
Date Sat, 25 Apr 2015 07:35:39 GMT

    [ https://issues.apache.org/jira/browse/IMAGING-112?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14512317#comment-14512317
] 

Gary Gregory commented on IMAGING-112:
--------------------------------------

Hopefully Damjan or another SME can take a look at the patch soon...

> JpegIptcRewriter.removeIPTC() does not remove all metadata
> ----------------------------------------------------------
>
>                 Key: IMAGING-112
>                 URL: https://issues.apache.org/jira/browse/IMAGING-112
>             Project: Commons Imaging
>          Issue Type: Improvement
>    Affects Versions: 1.0
>            Reporter: Xavier Dury
>             Fix For: Review Patch
>
>         Attachments: ImageTest.java, patch.txt
>
>
> I'm trying to compute hashes from my images to detect duplicates.
> To do so, I strip every metadata (like keywords I may have added) then compute a CRC32.
> My problem is that JpegIptcRewriter.removeIPTC() does not remove all metadata as there
is always a difference of 18 bytes (containing "Photoshop 3.0").
> So could it be possible to remove those 18 bytes as well in removeIPTC() so that I can
compute hashes?
> Thanks,
> Xavier



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