[Digikam-devel] Re: Status of face detection

[Marcel Wiesweg]

> I started playing with face detecting and want to share my results. First I
> struggle about missing haarcascades. No messages about this, only konsole
> debug out catch errors up. Kubuntus opencv packages do not include
> haarcascade files, would'nt it be better to host them inside libkface as a
> independend optimized set? 

I dont want to duplicate these files, they are really part of OpenCV and 
packagers of digikam must then list them as required dependencies. They are 
also pretty large (~1MB each, we use 7 or 8) so not easily included in any 
package.
Nonetheless, I agree that an error message from digikam would be helpful.

> Then I scanned a album, the progress dialog
> only show that moving slider, you don't get a impression how long the hole
> process will take. After finishing this dialog stays while the slider
> moves endless. I think the dialog should close or present a short summary
> about found faces (better).

Believe it or not, for me there is a percentage number and when it's at 100%, 
it's not moving. Sven is also reporting the behavior you are describing. I 
dont know why.
 The dialog stays and you have to click Close, that's at least consistent with 
some other tools in digikam.


> When you set names to face regions and start
> typing a list of tags is presented, but when you click with the mouse on a
> tag item which is not the top one the first in the list is selected
> instead of the clicked one. 

Is this in the thumbnail view or in the preview view? (though the code is very 
similar)


> When a face tag is assigned to a region, it
> was impossible for me to change that tag to another person. Do I miss
> something? I think clicking ore double clicking on the region or face tag
> should open the editor again. 

In the preview view, isnt it?
That's also something I cannot reproduce.
For me, there is a label with the assigned name, and when I click on that 
label, the editor is opened again.


> When I click on on a face tag in the tag
> tree, a page shows up where albums and images are shown. But for me only
> one image per person is shown, although there are more images with tagged
> faces of that person. Should'nt there be a list of all tagged images?

Once confirmed, a face tag is just like any other tag, so in the Tag left side 
bar panel, you will see all images where the name was assigned.
The "People" left side bar widget is different, here you get one thumbnail for 
each face (multiple per image, if necessary), you get unconfirmed results, and 
you get the face as thumbnail, not the whole picture.
That's how it works for me here.

Thanks for you tests.