Store people names in XMP inside image: Page 2

Jacko · 2022-10-15T23:30:14+00:00

Why keep developing .ini function over saving metadata to file? https://community.tonfotos.com/d/51-jpeg-metadata/6 If you did this, then you don’t need to...

Store people names in XMP inside image

Akin

One more vote for XMP embedding in pictures. Face recognition and user interface are really great compared to many other apps I tried. It would be great if it also embeds the info in pictures.

gosimon

I do like the .ini file as its an all in one without so many little files every where.

But in saying that you could implement .XMP files for video files as the first point of call as you cant dates and locations of MP4 files.

Here an example of an MP4 XMP file that another app created on my machine.

<x:xmpmeta xmlns:x="adobe:ns:meta/" x:xmptk="XMP Core 6.0.0"> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"> <rdf:Description rdf:about="" xmlns:exif="http://ns.adobe.com/exif/1.0/" xmlns:xmp="http://ns.adobe.com/xap/1.0/" xmlns:MY="http://ns.mylollc.com/MyloEdit/" xmlns:photoshop="http://ns.adobe.com/photoshop/1.0/" xmlns:xmpMM="http://ns.adobe.com/xap/1.0/mm/" xmlns:Iptc4xmpExt="http://iptc.org/std/Iptc4xmpExt/2008-02-29/" exif:DateTimeOriginal="2023-08-19T09:55:45.000" exif:SubSecTime="0" exif:SubSecTimeOriginal="0" exif:SubSecTimeDigitized="0" exif:GPSVersionID="2.2.0.0" exif:GPSLatitude="35,9.3885S" exif:GPSLongitude="138,30.1373E" xmp:CreateDate="2023-08-19T09:55:45.000" xmp:ModifyDate="2023-08-19T09:55:45.000" xmp:MetadataDate="2023-08-19T00:30:20.261Z" MY:DateRangeStart="2002-12-27T00:00:00.000" MY:DateRangeEnd="2002-12-27T23:59:59.999" MY:DateRangeScope="" MY:Undated="false" MY:Season="0" MY:Year="0" MY:flag="false" MY:processVersion="1" MY:MetadataDate="2023-08-19T00:30:20.261Z" photoshop:DateCreated="2002-12-27" xmpMM:DocumentID="B564B914-0BE9-4F7B-A2D3-BB96525442D8" xmpMM:OriginalDocumentID="B564B914-0BE9-4F7B-A2D3-BB96525442D8" xmpMM:InstanceID="xmp.iid:CEFDF130-43DB-40C0-81B5-C73C4A47E4D5"> <Iptc4xmpExt:PersonInImage> <rdf:Seq> <rdf:li>Alisha Harvey</rdf:li> <rdf:li>Gavin Saunders</rdf:li> <rdf:li>Simon Saunders</rdf:li> </rdf:Seq> </Iptc4xmpExt:PersonInImage> </rdf:Description> </rdf:RDF> </x:xmpmeta>

Andrey

gosimon Thank you for sharing this XMP sample. As I can see, the creators of that application took the route of creting thier own XMP extension that no other application supports. Actually, this particluar XMP includes two non-standard extensions - MY and Iptc4xmpExt. I don’t see how this approach any better than .ini files, to be honest.

gosimon

Andrey thanks for the feedback on that i agree with you and happy how you have it implemented.

dikle

Hi
digikam.org can store data in the jpg files. I did not yet find out where.
It would also be helpful to just list the names of the people found in an iptc field. For me the exact location of face and name would not be so relevant.

I found this in perplexity.ai:
Based on the search results, digiKam writes person names (face tags) into image metadata in the following way:

Face tags, including the names of people and the areas marking their faces in images, are typically stored in XMP metadata[1].
Specifically, digiKam allows writing “Face Tags (including face areas)” to metadata, which stores “the face tag paths and the rectangles corresponding to the zones around faces”[1].
The face tag information is usually stored in XMP format[1].
To ensure compatibility with other software and proper synchronization, digiKam can be configured to write face tag data to specific XMP namespaces:
- Xmp.dc.subject
- Xmp.lr.hierarchicalSubject
  
  These namespaces are used to store tag hierarchies, which can include face tags[5].
It’s important to enable the “Set Tags Path” option for these XMP namespaces to ensure proper handling of hierarchical tags, including face tags[5].

By configuring digiKam to write face tags to these XMP namespaces, you can ensure that person names associated with faces in images are properly stored in the file metadata and can be read by other compatible software[5]

The names can be entered under KEYWORDS in IPTC

Andrey

dikle We are discussing here the need and priority of adding specific feature to Tonfotos. I am not sure how your post is contributing to this discussion. And we don’t tolerate spam here, so I am removing all links from your post.

dikle

I was suggesting that storing only the names in an image file could be done an IPTC field.
I cannot see what that has to do with spamming.

Andrey

dikle I was suggesting that storing only the names in an image file could be done an IPTC field.

Thank you for clarification. Please refer to my first answer in the beginning of this thread. The main challenge is that XMP format cannot store all the necessary data to make XMP useful for data syncrhonization between several copies of Photo Management Software, but XMP is perfectly capable of storing not just names, but also face regions. With that in mind, suggestion using IPTC, that can hold even less information about people, does not seem to be better solution to me.

dikle I cannot see what that has to do with spamming.

I guess then you never moderated a forum. The most popular type of spam on forums are posts with backlinks to promoted web sites for SEO purposes. On most forums nowadays you will get banned immediately if your first post after registration contains any link, let alone six of them.

ndfan77

Apparently there is an Xmp metadata field explicitly for the purpose of identifying people in a photo named Xmp.iptcExt.PersonInImage [ref1] [ref2], and at least PhotoPrism recognizes it.

IMHO this is desperately needed (and you’d have my business in a heartbeat), because PhotoPrism’s face recognition is not very good.

Andrey

ndfan77 Interesting, thank you for pointing this out.

Sorry for being that person, but I would still like to comment few points here:

This is not actually IPTC, this is still XMP (even though it refers to IPTC for some reason in XMPtag name)
Again, this is just person name, it has no face coordinates. As your last link shows, PhotoPrism will add it to Subject (which is most likely equivalent of Tag in Tonfotos), not to person field.

With that said, I dont thik I personally encountered photos were people would be marked like that. And if we are going to write people information to XMP, why would use this field instead of traditional faces markup that iPhone and lot of other software is using? It not only contains name, it also contains face region, which is definitley much better option.

Anyway, as I think I said before, saving people data into XMP metadata is in our roadmap already, so please stay tuned.

ndfan77

Andrey Appreciate the response and your interest.

In my use case the only thing that matters is accurate person search results in PhotoPrism. Tonfotos face recognition is significantly better (by several orders) than PhotoPrism. But that fact doesn’t benefit my use case unless I can easily leverage it from PP. (I can’t expose my photo collection to remote users through a web interface with Tonfotos - and even if I could, Tonfotos would have a lot of catching up to do to reach feature parity.)

Being able to leverage the (much) better face recognition provided by Tonfotos from PP is (frankly) the only reason I’d have an interest in using Tonfotos.

If Tonfotos had an option to also update the metadata in each image with names from face recognition, I suspect you would bring serious value to the table for quite a few people (particularly PhotoPrism users).

If you aren’t able to add that functionality directly I may look into putting a Python script together that reads your .ini files (which really aren’t in ini format) and does it with something like ExifTool.

Andrey

ndfan77 Thank you for clarification.

As I said, this is already in our roadmap.

MrBurns

Did I understand this right that writing back the meta information to photos (like Picasa did) is on your roadmap? That’s would be really fine.

Andrey

MrBurns Yep, we are working on it.

E.s.e.

me sumo a la petición !!!

I+

Andrey

E.s.e. Implemented in 1.10.5: https://community.tonfotos.com/d/535-version-1105-saving-person-data-in-xmp

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