Headline, Title, Event XMP fields and their correlation, use in PSU

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endre
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Headline, Title, Event XMP fields and their correlation, use in PSU

Post by endre » 07 May 18 19:08

There are 3 very similar XMP fields and want to ask how others use them within PSU

%xmp:photoshop:headline - this is in the description section and this supposed for a Headline / Title
%xmp:dc:title - this is also under the description section and I have seen recommendations to just duplicate the headline with macro variable

%xmp:Iptc4xmpExt:Event - this is under the IPTC Ext section and PSU ask for input upon importing as well as it saves the content as a Category:Events, so you want to keep this field simple or empty, right?

Any hints are welcomed.

Larry56
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Re: Headline, Title, Event XMP fields and their correlation, use in PSU

Post by Larry56 » 08 May 18 6:17

I may be doing it wrong although I've never seen any definitive way to handle these fields. A number of people I've talked to about IPTC standards frequently do their own thing based on personal preferences and needs.

I use Headline for a short description of the image and Description for more detailed information. It should be noted, to make things even more confusing, not all DAM or photo software use the same names for these field. As an example Lightroom CC calls Headline "User Comment" (IPTC) and Description it calls "Caption" (EXIF).

I leave Title at the PSU default. However, some will want to see the Headline info in the Title field. Smugmug for one, so If I upload to Smugmug outside PSU I have to remember to copy Headline to Title. Thankfully, PSU sends the Headline as Title when it sends to Smugmug (without actually changing the Title field).

I can't comment on Event. I've never used it.

Hert
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Re: Headline, Title, Event XMP fields and their correlation, use in PSU

Post by Hert » 08 May 18 8:10

If you hover the mouse over the field caption you'll get the documentation for that field as defined in the specifications.
hints.png
hints.png (44.45 KiB) Viewed 333 times
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Hert
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Re: Headline, Title, Event XMP fields and their correlation, use in PSU

Post by Hert » 08 May 18 10:37

%xmp:Iptc4xmpExt:Event - this is under the IPTC Ext section and PSU ask for input upon importing as well as it saves the content as a Category:Events, so you want to keep this field simple or empty, right?
PSU manages the Event tag for you. When you assign a catalog label from the Events top category then PSU will write that to Iptc4xmpExt:Event. I get the impression that you think from "metadata to catalog" and not so much from "catalog to metadata" yet. As a typical PSU user you'd never enter the Iptc4xmpExt:Event manually. Simply assign an Event catalog label and you've got that metadata field covered. The same applies for People. Try to think from catalog to metadata. After all, PSU is there to help make metadata management a lot easier.
Once you get the concept of Catalog Labels (they are more than just keywords) you can even start using more advanced techniques. For instance; you can enter metadata details in the details of a catalog label. And then when you assign that catalog label to a photo and sync then your metadata will be enriched automatically. E.g. You have catalog panel "People::Photographers::John Doe". In the details of that catalog label you enable the Metadata setting "Apply detail profile" and enter the person's address details in the "Creator Contact Info". Now, as you assign catalog label "John Doe" and sync, you'll be sure that the Creator Contact Info is fully enriched with the correct metadata.
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fbungarz
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Re: Headline, Title, Event XMP fields and their correlation, use in PSU

Post by fbungarz » 09 May 18 0:57

You have catalog panel "People::Photographers::John Doe".
Sorry to disagree here!
I used to have all my photographers under PSu's catagory People, but that was a big mistake!
As you suggest, PSU automatically writes all People entries into the "IPTC4xmpExt:PersonInImage". Well, the photographer is NOT the person shown in an image, but the creator of that photo. So, if "John Doe" was the person who took the photo, his name should be written (= mapped to) the "dc:creator" field and NOT to the "IPTC4xmpExt:PersonInImage".

Therefore I would definitely recommend crating the labels for all photographers under a category separate from People! In my case I created a custom label category named "copyright" and nested all the photographer there. Then I manually configured these names to be written to the "dc:creator" field. PSu's little known secret its enormously powerful capability of "label mapping". Right-click on any label, open "Details" and look under "Metadata Settings" to customize how labels can be mapped to particular XMP fields...

Cheers,
Frank

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fbungarz
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Re: Headline, Title, Event XMP fields and their correlation, use in PSU

Post by fbungarz » 09 May 18 1:03

FYI - only three default label categories will affect your XMP metadata in PSU:
  • Names in the category "people" will be written into "IPTC4xmpExt:PersonInImage".
  • Place names: if in "Preferences - Sync Settings - Read - Geo Location processing" is enabled, then entering data into the Geo-Panel will second-guess the geography and automatically create the corresponding label(s) under "Places".
  • Events - labels under events will be written into "xmp:Iptc4xmpExt:Event"

Hert
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Re: Headline, Title, Event XMP fields and their correlation, use in PSU

Post by Hert » 09 May 18 8:39

Great addition. Thank you Frank
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endre
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Re: Headline, Title, Event XMP fields and their correlation, use in PSU

Post by endre » 09 May 18 16:46

Thanks to everyone for the clarification.

Other question is face detection.

-What is the real life use of face detection/face area tagging?

If I tag / keyword a person in a photo then run face detection I should still need to link faces with names?

Is it cross application compatible or just for PSU?

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fbungarz
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Re: Headline, Title, Event XMP fields and their correlation, use in PSU

Post by fbungarz » 09 May 18 17:16

What is the real life use of face detection/face area tagging?
I guess the idea is to easily see, how the names of a person or a particular subject relate to a person/object in an image. So, you wouldn't want to tag every chair in your images, but if you are in the furniture business and are creating a database of images of different brands of chairs, say, then it might be helpful to tag the photos so that customers can see immediately which chair corresponds to which particular brand (via area-tagging).
For persons in the image the use is more obvious: in a group photo you can tag each face separately. Say you are a teacher and each year some school photographers takes pictures of your class. How long will you be able to remember the face of each student in your class? Tagging the images thus may be quite helpful...
If I tag / keyword a person in a photo then run face detection I should still need to link faces with names?
I believe that is how PSu currently still works, AFAIK even version 4 has no automatic face recognition built in yet. But perhaps I am wrong...
It is one of the reason why in the past I personally have not used the feature much. I already find it fairly time-consuming just adding labels to all these images, adding area- and face-areas is yet an additional step, and then linking those back to the person's tags yet another one.
I guess it depends on your priorities. How important is it to you to be able to identify exactly each face/area in a particular photo? Perhaps you do not need to do it on your very best friends and family, but the people you might know less well and in a few years might have difficulties to remember their names/faces? It depends on what you use that database for.
Is it cross application compatible or just for PSU?
I believe the area/face tags are written into the files as XMP. Theoretically that would mean other software could read these tags as well. Any software that is, which uses the same tagging standard. I seem to remember that people here on the forum once discussed that PSu's area/face tags were not the same as the ones used in Lightroom, but I am not certain about this. I also heard that Lightroom does a fairly good job at face recognition and (unlike PSu?) will learn to create labels automatically based on these previously recognized faces. Personalyl I have not tested this yet and I do not know if the face/area tags created in Lightroom can actually be read by PSu.

Cheers,
Frank

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fbungarz
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Re: Headline, Title, Event XMP fields and their correlation, use in PSU

Post by fbungarz » 09 May 18 17:23

PS: one thing I forgot - remember that there may be privacy issues involved, if you are sharing photos with anyone. Not every family member, friend, or customer might be entirely happy if you share images of them that are face-tagged...

endre
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Re: Headline, Title, Event XMP fields and their correlation, use in PSU

Post by endre » 09 May 18 19:17

Wow, very exhaustive and timely reply Frank
Most appreciated,
Cheers,
Endre

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