[Digikam-devel] [Bug 139547] tag hierarchy automatic fill

[Daniel Bauer]

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------- Additional Comments From linux daniel-bauer com  2007-01-04 19:03 -------
Hi Gilles,

Your proposal in Comment #30 is the perfect solution (my opinion).

Laurent: 

<<who wants to do this kind of job all for himself>> Well, sometimes it's not a question of "want to", but of "have to". Although (many) image agencies have specially trained stuff doing the indexing work, the chances to sell material to them are often better if the pictures are already properly "keyworded" (which is even more than keywords, in includes caption, location and so on...), simply because you save them time and money. Some agencies just take the pics, extract the embedded metadata into their database and let their customers search. Good keywords then are just as important as in google, where it makes no sence if your website occurs on bottom of page 2358...

to the discussion:

besides of no-tags, ad-hoc-tags and cloudy-tags there are two main possibilities for tagging (excuse me, if my english is not correct):

a) "controlled vocabulary": we use a list of once pre-defined keywords that we apply consistently. Here we save only keywords (not a tree), thus use it like the "normal" behaviour of digiKam: we select "boy" but not its parent-tags. However, we might like to have a hierarchy so we can find the appropriate keywords easier. We could use this manner e.g.:

-message/emotion
    -happiness
        -laughter
        -reunion
        -love 
    -sadness
        -farewell
        -death
-occasions
    -chrismas
    -birthdays
    -marriage
-main colours of image
    -crazy colours
    -mild colours
    -reddish
    -blueish

Here we tag a picture like "love, mild colours".

b) "taxonomy": this means, we use a tree structure of keywords that becomes more specific as we go down the tree. This is the behaviour we can have from the left side bar or now with the new menu options by Gilles. This method allows us to work by refining the search in steps: people->children->boys->blondes. Of course here we must have the complete tree, because we also have "blondes" in "girls", "women", "men", "cigarettes" and we couldn't find the picture easily using only the last keyword.

So with the current implementation (Gilles Comment #30) I guess both ways are now possible in digiKam and everybody can do as s/he likes (and I didn't even have to wait till next Christmas :-). 

Of course, "fun-tags" in a flickr-way can still be a wish, but I wouldn't mix it with "principal tagging thoughts" and put it in the "design/gadgets"-file.

Daniel