One of the advantages of separate XMP sidecar files is that, if you lose or don't have the digikam database, you can just open all the files in a new install of digikam, and it will automatically read in all the metadata from the sidecar files, and Voila!, your database is repopulated. On top of that, it is open source and free. Digikam is one of the vanishingly rare programs which actually can do that, though you have to set it up in the configuration file.
#Digikam face metadata update
So one of my requirements for a DAM (Digital Asset Manager) is that it reliably create and update external XMP files. I doubt the built in data (EXIF, etc) will have as good a chance of being readable. I think having metadata in a separate XML-based XMP file, which is a simple ASCII text file, will have a good chance of being readable 100 years from now. I can look at a real photo 100 years old. Without a hierarchical structure where I can just check the boxes under each category I invite human error and/or feel stressed while assigning tags/labels, essentially having to remember my mandatory information categories and visualise the label tree branches to assign both sub-labels and broader ones.I am interested in preserving photo data in a way that can be read 100 years from now. You can find them efficiently if all that information is provided, and you can filter by those labels.
This may seem somewhat complex, but when building websites you might well find yourself in a situation where you perhaps need an atmospheric image that has already been edited beautifully, and you remember that some great ones were taken during that Grand Canyon exploration. This makes media findable from several "perspectives", and provides necessary meta information, especially when operating a library with many users. So in order to systematically tag all photos with all relevant tags (and not just those that randomly come to mind as I look at it), I have developed a structure similar to the one above that I can just click through, top to bottom. Someone else is looking for a photo of the eggs of a specific species - but perhaps I forgot to label the photo(s) I edited as edited, or I labelled them as "eggs" and "mosquito" but forgot the specific species. All of the four species were photographed as eggs, larvae, pupae, adult. I took photos of several mosquito species in all of their development stages. Some more context in case you wonder "why would you even need that" 😄 I am absolutely open to alternatives to this, but so far I can't think of any other way to systematically, reliably and thoroughly label all media in my library. assign one or more labels from each category.Find files that are not properly labelled yet: Filter your media by "no categorised labels assigned" or even "some categorised labels missing" (meaning not from every category a label has been assigned: Some of the mandatory questions have not been answered for this file).These labels should allow hierarchies, perhaps even automatically assign the parent label if one of its sub-labels is assigned.Under each category you create your custom tags/labels (the answers to the questions, see example tree below).Create custom label categories that serve as different categories of information you want to provide for each file (=questions that need to be answered for each file).PhotoPrism so far does not support hierarchies for labels or keywords - I understand the philosophy behind that with namespaces and everything, however I think hierarchies are extremely useful for properly and comprehensively labelling your media. This is pretty much my situation as well - and a feature I would gladly sponsor.Ĭoming from DigiKam I have developed a hierarchical tag structure to provide different types of information about each file.
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