[Digikam-devel] People tagging design

[Gilles Caulier]

2010/5/21 Aditya Bhatt <adityabhatt1991 at gmail.com>:
> Hi everyone,
> Since I'm ready to start digiKam+libface integration, I need to discuss how
> the face detection+recognition GUI is to be done in digiKam.
> Detection:
> I'm tweaking the peopletag project at the moment. It draws it's own
> backgound picture and it is possible to draw and move around rectangles on
> it. I'm completely trashing the nepomuk code from this widget.
> iPhoto does it like this
> : http://www.popgadget.net/images/iphoto_1_blurred.jpg . Unrecognized faces
> are tagged with "unknown".
> Question: digiKam draws it's own preview. Would it be possible to have a
> widget in digiKam that draws the little tag boxes over this preview widget?
> I don't find the idea of opening a separate window for region tagging very
> appealing.

I'm agree. All must be done in preview mode (F3). Do not open a new
dialog dedicated for face tagging, as Picasa do if i rememeber (i will
take shot about)


> Recognition:
> Here's how iPhoto does it: http://support.apple.com/kb/HT3427
> I don't think this should be much of an issue, both iPhoto and Picasa do it
> (almost) this way.
> In Picasa, you can identify unnamed people this way
> : http://farm4.static.flickr.com/3442/3947433848_e32996d70b.jpg
> And you can vote yes/no this way
> : http://andywolf.com/wp-content/uploads/2009/10/PicasaFaceFinder.png

yes, it's really suitable

> (All revealed by google search)
> Note the people list in the left pane.
> I think recognition should be implemented as shown above. I find it perfect.
> And I think we should also have a people list on the left, like in picasa.
> As for detection, I'm waiting for advice. By the way, the face detection in
> F-Spot (never implemented, incomplete GSoC project) seems to have coded the
> region tagging directly into the main photo viewer widget (as gleaned from
> the student's blog). Should I do that?

I think preview and editor must support face tagging, as keyword
tagging do. We must be homogenous there. Note that LightTable use also
preview widget and face tagging must work there too.

In GOsC branch, Marcel has started to implement a common and pure Qt4
widget for preview and editor canvas with layer support.

Gilles Caulier