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

[frederic chaume]

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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