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From Damjan Jovanovic <damjan....@gmail.com>
Subject Re: [IMAGING] TagInfo and distinction between TagName and FieldName
Date Tue, 03 Jul 2012 19:34:52 GMT
On Tue, Jul 3, 2012 at 9:03 PM, Farrukh Najmi
<farrukh@wellfleetsoftware.com> wrote:
> On 07/03/2012 01:56 PM, Damjan Jovanovic wrote:
>>
>> On Tue, Jul 3, 2012 at 3:48 PM, Farrukh Najmi
>> <farrukh@wellfleetsoftware.com> wrote:
>>>
>>> On 07/02/2012 11:22 PM, Damjan Jovanovic wrote:
>>>>
>>>> On Mon, Jul 2, 2012 at 11:33 PM, Farrukh Najmi
>>>> <farrukh@wellfleetsoftware.com> wrote:
>>>>>
>>>>> Hi Guys,
>>>>>
>>>>> I am new to the project so forgive me if the answer is obvious...
>>>>>
>>>>> I am working with latest svn bits and the
>>>>> org.apache.commons.imaging.formats.tiff.taginfos.TagInfo class seems
to
>>>>> only
>>>>> support the TagName column of Table 3 TIFF Rev. 6.0 Attribute
>>>>> Information
>>>>> Used in Exif in the Exif spec <http://www.exif.org/Exif2-2.PDF>.
I need
>>>>> access to FieldName as it seems more suitable as a human-friendly
>>>>> identifier
>>>>> for the tag.
>>>>>
>>>>> I think it would be ideal if TagInfo supports both TagName and
>>>>> FieldName.
>>>>> What does the dev team think? If there are not many -1s then I will
>>>>> file
>>>>> in
>>>>> RFE in JIRA.
>>>>>
>>>>> Thanks for your input.
>>>>>
>>>>> --
>>>>> Regards,
>>>>> Farrukh
>>>>>
>>>>> Web: http://www.wellfleetsoftware.com
>>>>>
>>>> Hi Farrukh
>>>>
>>>> The TIFF6 specification Appendix A only has a "TagName", which is
>>>> similar to Exif 2.2's "FieldName". Other TIFF tag specifications (DNG,
>>>> TIFFPM6, RFC 2301) also only give a name and a description.
>>>>
>>>> Maybe what we need is:
>>>> Use TagInfo's "name" field for the name taken verbatim from those
>>>> specs (eg. use "ImageWidth" instead of "Image Width")
>>>> Add a "description" field to TagInfo with a long description (eg.
>>>> "Image width, the number of columns in the image")
>>>>
>>>> What do you think?
>>>
>>>
>>> Hi Damjan,
>>>
>>> +1 on your proposed solution for using TagInfo.name for the Exif 2.2's
>>> "Field Name" and for adding a TagInfo.description for Exif 2.2's "Tag
>>> Name".
>>> This is what I was thinking as well. That in conjunction with existing
>>> TagInfo.tag (the numeric id) completes the identification, naming and
>>> description of the tag and makes for a clean model.
>>>
>>> What do dev team members
>>> <http://commons.apache.org/imaging/team-list.html>
>>> think about this proposal?
>>>
>>> As an aside, this matches very well with ebXML RegRep's Registry
>>> Information
>>> Model which is what I am trying to map photo metadata to. My eventual
>>> goal
>>> is to define a standard specification to manage image content and
>>> metadata
>>> in an ebXML Registry and Repository.
>>>
>>>
>>> --
>>> Regards,
>>> Farrukh
>>>
>>> Web: http://www.wellfleetsoftware.com
>>>
>> Those dev teams members are no longer around, it's mostly just me :).
>>
>> "description" is going to be difficult, as only EXIF provides it. But
>> I'll start doing the "name".
>>
>
> Hi Damjan,
>
> Please see the patch I submitted for thread:
>
> http://mail-archives.apache.org/mod_mbox/commons-dev/201207.mbox/browser
>
> Above thread seems quite related to this one.
>
> I think IPTC provides description too.
>
> If a metadata format other than EXIF or IPTC (which are others btw?) does
> not support description then we can simply return null for that.

The only other metadata format is XMP, but at the moment it's read by
a separate method and returned as a string of XML.

>
> BTW, ok if I start a JIRA issue (or should it be two?) to track both
> threads' issues?

Of course, go ahead.

>
> --
> Regards,
> Farrukh
>
> Web: http://www.wellfleetsoftware.com
>
>
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>

Regards
Damjan

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