[jira] [Updated] (IMAGING-112) JpegIptcRewriter.removeIPTC() does not remove all metadata

["Xavier Dury (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMAGING-112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xavier Dury updated IMAGING-112:
--------------------------------
    Attachment: imaging-112.patch

patch with license header

> 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, imaging-112.patch, 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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