Face Recognition Problem

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Face Recognition Problem

Mick Sulley
Running DK 5.7.0 App Bundle.

I have just run 'Scan collection for faces' with the settings Detect
faces, and albums set to one specific directory.  It has scanned that
directory and continued to scan the whole collection.  Is this a bug or
have I missed something?

Also I have the detection parameter set to 80, I guess the default as I
have not changed it, and it is detecting loads of stuff as faces,
clocks, curtains, bricks, all sorts of things.  I have had the odd thing
in the past but nothing like this.  Do I need to change this setting?

Thanks

Mick

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Re: Face Recognition Problem

Mick Sulley
I seem to have found the answer.  I noticed that in Options under the
Albums tab there is a Tags tab which was set to Whole tags collection. 
I turned that off and now it just scans the specified directory.

What is the purpose of the Tags tab?


On 23/09/17 18:36, Mick Sulley wrote:

> Running DK 5.7.0 App Bundle.
>
> I have just run 'Scan collection for faces' with the settings Detect
> faces, and albums set to one specific directory.  It has scanned that
> directory and continued to scan the whole collection.  Is this a bug
> or have I missed something?
>
> Also I have the detection parameter set to 80, I guess the default as
> I have not changed it, and it is detecting loads of stuff as faces,
> clocks, curtains, bricks, all sorts of things.  I have had the odd
> thing in the past but nothing like this.  Do I need to change this
> setting?
>
> Thanks
>
> Mick
>

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Re: Face Recognition Problem

Mario Frank
Hey Mick,

the purpose of the tags tab is to allow combinations.
Consider you have an album "Family" which is full of family pictures and
some junk album where also family pictures
are located. You could then select the "Family" and junk album but then
would also scan images from the junk album
that are no family pictures. But if the family pictures in the junk
album are tagged with the tag Family or some subtag
of it, you can combine it in the speaking of:
"Scan all pictures in the album Family and also all images with the tag
Family"
On the other hand, you can also just ignore the album tab and just scan
in images having specific tags.

Concerning the low detection quality: During Google Summer of Code,
better algorithms have been introduced in digiKam
but those are not yet integrated in the distributed version of digiKam
as some testing has to be done.
I would propose setting the detection parameter to at least 90 until the
new algorithms are shipped.
This is much slower but has less false positives.

Regards,
Mario

Am 23.09.2017 um 20:07 schrieb Mick Sulley:

> I seem to have found the answer.  I noticed that in Options under the
> Albums tab there is a Tags tab which was set to Whole tags
> collection.  I turned that off and now it just scans the specified
> directory.
>
> What is the purpose of the Tags tab?
>
>
> On 23/09/17 18:36, Mick Sulley wrote:
>> Running DK 5.7.0 App Bundle.
>>
>> I have just run 'Scan collection for faces' with the settings Detect
>> faces, and albums set to one specific directory.  It has scanned that
>> directory and continued to scan the whole collection.  Is this a bug
>> or have I missed something?
>>
>> Also I have the detection parameter set to 80, I guess the default as
>> I have not changed it, and it is detecting loads of stuff as faces,
>> clocks, curtains, bricks, all sorts of things.  I have had the odd
>> thing in the past but nothing like this.  Do I need to change this
>> setting?
>>
>> Thanks
>>
>> Mick
>>
>

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Re: Face Recognition Problem

Mick Sulley
Thanks for your reply Mario, I now understand!


On 25/09/17 14:19, Mario Frank wrote:

> Hey Mick,
>
> the purpose of the tags tab is to allow combinations.
> Consider you have an album "Family" which is full of family pictures and
> some junk album where also family pictures
> are located. You could then select the "Family" and junk album but then
> would also scan images from the junk album
> that are no family pictures. But if the family pictures in the junk
> album are tagged with the tag Family or some subtag
> of it, you can combine it in the speaking of:
> "Scan all pictures in the album Family and also all images with the tag
> Family"
> On the other hand, you can also just ignore the album tab and just scan
> in images having specific tags.
>
> Concerning the low detection quality: During Google Summer of Code,
> better algorithms have been introduced in digiKam
> but those are not yet integrated in the distributed version of digiKam
> as some testing has to be done.
> I would propose setting the detection parameter to at least 90 until the
> new algorithms are shipped.
> This is much slower but has less false positives.
>
> Regards,
> Mario
>
> Am 23.09.2017 um 20:07 schrieb Mick Sulley:
>> I seem to have found the answer.  I noticed that in Options under the
>> Albums tab there is a Tags tab which was set to Whole tags
>> collection.  I turned that off and now it just scans the specified
>> directory.
>>
>> What is the purpose of the Tags tab?
>>
>>
>> On 23/09/17 18:36, Mick Sulley wrote:
>>> Running DK 5.7.0 App Bundle.
>>>
>>> I have just run 'Scan collection for faces' with the settings Detect
>>> faces, and albums set to one specific directory.  It has scanned that
>>> directory and continued to scan the whole collection.  Is this a bug
>>> or have I missed something?
>>>
>>> Also I have the detection parameter set to 80, I guess the default as
>>> I have not changed it, and it is detecting loads of stuff as faces,
>>> clocks, curtains, bricks, all sorts of things.  I have had the odd
>>> thing in the past but nothing like this.  Do I need to change this
>>> setting?
>>>
>>> Thanks
>>>
>>> Mick
>>>

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Re: Face Recognition Problem

jat255
In reply to this post by Mario Frank
Hi Mario,

Is there anyway for an enterprising user to enable those new detection
algorithms? Some sort compilation flag or something? Pardon my naivety, as I
haven't looked at the code at all.

Thanks,
Josh



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