Best way manage free form information about the content of an image?

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Best way manage free form information about the content of an image?

Simon Cropper-3
Hi,

Although this is the first time I have posted on this list I have been
using digikam for many years.

I have quite a large collection -- digital images and scanned images.

I am in the process of scanning in quite a lot of historical images.

The intent is to get other people to sit down with me in front of the
computer and tell me who is in the photograph, where the image was
taken, etc.

How is this information best stored - tags, comments, captions, notes?

How safe is the information once captured? If the directory tree is
changed or file moved how can I ensure the data goes with the image?

How can I export this data, with or without image, to an external format
-- a webpage or example?

Any ideas or experiences would be appreciated.

--
Cheers Simon

    Simon Cropper - Open Content Creator / Website Administrator

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Re: Best way manage free form information about the content of an image?

Remco Viëtor
On Tuesday 10 April 2012 12:28:24 Simon Cropper wrote:
> Hi,
(...)
> I am in the process of scanning in quite a lot of historical images.
>
> The intent is to get other people to sit down with me in front of the
> computer and tell me who is in the photograph, where the image was
> taken, etc.
>
> How is this information best stored - tags, comments, captions, notes?

    I'd use a mixture of those: captions/comments to describe the picture, and
use tags for persons, locations, type of events and such (things that can be
captured accurately in 1-2 words).
    As you are going to do it with other people giving you the information,
putting the information in the correct field on the spot might be difficult.
You might want to record (audio) what the others are telling you about a photo
for later reference, and clean up notes and tags in a second pass.

> How safe is the information once captured? If the directory tree is
> changed or file moved how can I ensure the data goes with the image?

    For formats like PJG, PNG, TIFF, Digikam can write tags, captions,
comments etc. to the file as metadata. In that case the data will stay
associated with the image. (and, back up the images before adding the
tags/comments, just in case)

> How can I export this data, with or without image, to an external format
> -- a webpage or example?
    Tools like exiftool or exiv2 can extract metadata (Exif, ITCP, XMP, ...)
in a readable format. After that, there's a lot of possibilities to use those
data (scripting...). A lot will depend on the number of images you're dealing
with, but from your signature, I guess you know how to do that part...

Good luck,

Remco
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Re: Best way manage free form information about the content of an image?

Shrinivasan T
In reply to this post by Simon Cropper-3
> How is this information best stored - tags, comments, captions, notes?

Use IPTC tags for easy entry and access.



>
> How safe is the information once captured? If the directory tree is
> changed or file moved how can I ensure the data goes with the image?

They will be kept safe with the images itself,even if we move the
images across devices.

>
> How can I export this data, with or without image, to an external format
> -- a webpage or example?



https://en.wikipedia.org/wiki/IPTC_Information_Interchange_Model
https://scribblesandsnaps.wordpress.com/2011/02/22/work-with-photo-metadata-in-digikam/

https://code.google.com/p/jbrout/ use it to export iptc data.

If you need any specific requirement on IPTC data export,
I will help you by writing python scripts to do so.

--
Regards,
T.Shrinivasan


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