[digiKam-users] face detection with 7.2RC 1st try

[frederic chaume]

Hi all

one additional problem I'm getting : confirmation of a face is very, 
very slow (getting "doesn't answer" message, when it doesn't crash).

did someone experiment the same ?

For information I have 150K + pictures in my DB




Le 04/02/2021 à 08:30, frederic chaume a écrit :
>
> Hi Maik
>
>
> thanks for the clarification, that makes the process more clear. Below 
> tha last result I got
>
>   * I have run the training database using the option "clear
>     unconfirmed face and analyse again" (translation from french, so
>     may differ from the option name)
>   * I have completed the face detection on all catalogs, now I have
>     ~20K unknown faces (using "ignore pictures already analyzed")
>   * I have run the face recognition again , and got some new
>     unconfirmed faces with a good success rate, but far from the
>     number of faces I should have exepected from the unknown
>
> what should be the options to get a better result on recognitions ?
>
> Thanks and regards
>
>
> frederic
>
>
>
> Le 04/02/2021 à 08:16, Maik Qualmann a écrit :
>
>> Face recognition is carried out on all images with "Unknown" faces. So all
>> faces under the virtual tag "Unknown" in the People view. Album bassierd
>> wouldn't make sense. You probably don't even know which albums the unknown
>> faces come from in order to choose the right albums.
>> The training database rebuild is not album based either. All known faces are
>> used.
>>
>> Maik
>>
>> Am Mittwoch, 3. Februar 2021, 12:16:31 CET schrieb frederic chaume:
>>> Hi Maik
>>>
>>> Thanks a lot
>>>
>>> after running the training dabase, the success rate is close to 100%.
>>> Excellent !
>>>
>>> now still some clarification needed.
>>>
>>>    * on the face detection menu, album selection can only be modified
>>>      when "face detection" is set, no change possible when "face
>>>      recognition is set". So should we run 1st the "face detection" (and
>>>      then select the albums) before runinng "face recognitation" ?
>>>    * still seeing few faces with 1 new , while no unconfirmed is proposed
>>>      (but not systematic)
>>>    * I have run a database training on all collections , then started a
>>>      face recognitation on all collections (just set "all collections" in
>>>      face detection without running it, hope it is ok). still on-going,
>>>      will let you know the result,
>>>
>>> thanks
>>> frederic
>>>
>>> Le 01/02/2021 à 22:23, Maik Qualmann a écrit :
>>>> It is important that you rebuild the training database. This is done in
>>>> the
>>>> maintenance tool under face detection/recognition activate the checkbox
>>>> for
>>>> the rebuild the training database. The settings for the albums to be
>>>> searched are in a tab in the left People sidebar.
>>>>
>>>> Maik
>>>>
>>>> Am Montag, 1. Februar 2021, 09:48:56 CET schrieb frederic chaume:
>>>>> Hi all
>>>>>
>>>>> just installed 7.2 RC on windows and start playing with face tagging ,
>>>>> below a 1st quick feedback
>>>>>
>>>>>     * 1st of all: I like the presentation and the speed. it is much more
>>>>>     
>>>>>       efficient then previous release (ease to find confirmed,
>>>>>       unconfirmed)
>>>>>     
>>>>>     * seems the number of initial tags when I  start using  7.2 is much
>>>>>     
>>>>>       lower than what I have in previous release . Is that normal?
>>>>>     
>>>>>     * some face tag is shown with 1 new , but no new is proposed, only the
>>>>>     
>>>>>       confirmed ones are available/visible
>>>>>     
>>>>>     * with the 1st run , the success rate is very low (<10%), so I have
>>>>>     
>>>>>       unconfirmed most of them (and confirmed the positive ones)
>>>>>     
>>>>>     * 2nd run   very few  new face is proposed for the existing tags (1 or
>>>>>     
>>>>>       2 in some faces tags)
>>>>>       
>>>>>         o I have thousands of "unkonwn" but was thinking they could be
>>>>>         
>>>>>           proposed to the existing faces as "unconfirmed" faces?
>>>>>         
>>>>>         o how to select albums? in the people menu on the left, I see "no
>>>>>         
>>>>>           album selected" and didn't find how to add it (I'm using
>>>>>           recognize face). I tried using the maintenance tool, but no
>>>>>           change
>>>>>         
>>>>>         o do we have to run "detect face" before "recognize face" ? I
>>>>>         
>>>>>           tried also and didn't get more new unconfirmed proposed in the
>>>>>           face tags
>>>>>
>>>>> Did I miss something ?
>>>>>
>>>>> thanks and regards
>>>>>
>>>>> frederic
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