No Facial Detection Ubuntu 18.04

[Nicolas Dufresne]

Le mardi 11 septembre 2018 à 18:30 -0500, Timm Murray a écrit :
> Thanks, Martin, you pointed me in the right direction.  What happens
> is that the Ubuntu package opencv-data puts it in /usr/share/opencv,
> while the plugin looks in /usr/share/OpenCV.  Adding a syslink makes
> it work.

This feels familiar.

> 
> Next question is if this should be fixed in the plugin, or the Ubuntu
> package?

The configure scripts in gst-plugins-bad does:

  if test -d "$PKG_CONFIG_SYSROOT_DIR/$OPENCV_PREFIX/share/opencv/"; then
    AC_DEFINE_UNQUOTED(OPENCV_PATH_NAME, ["opencv"], [OpenCV path name])
  else
    AC_DEFINE_UNQUOTED(OPENCV_PATH_NAME, ["OpenCV"], [OpenCV path name])
  fi

So maybe OpenCV was rebuild, and installed in different path, but gst-
plugins-bad was not ? (meson.build does exactly the same)
> 
> Thanks,
> Timm
> 
> On Tue, Sep 11, 2018 at 8:06 AM, Martin Vachovski <
> Martin.Vachovski at skytek.com> wrote:
> > Hi Timm,
> > 
> > I think you should make sure you have the "profiles" for
> > face/nose/mouth etc.
> > These are the Haar features that OpenCV uses for the
> > face detection.
> > 
> > You can specify them with
> > ... ! facedetect profile=[path] ! ...
> > 
> > According to
> > gst-inspect-1.0 facedetect
> > 
> > The default path is:
> > /usr/share/OpenCV/haarcascades/haarcascade_frontalface_default.xml
> > 
> > As a first check. See if you have that file
> > 
> > Cheers
> > Martin
> > 
> >  
> > From: gstreamer-devel <
> > gstreamer-devel-bounces at lists.freedesktop.org> on behalf of Timm
> > Murray <tmurray at wumpus-cave.net>
> > Sent: Tuesday, September 11, 2018 12:06 AM
> > To: Discussion of the development of and with GStreamer
> > Subject: No Facial Detection Ubuntu 18.04
> >  
> > I'm using the following pipeline for facial detection:
> > 
> > gst-launch-1.0 v4l2src device=/dev/video0 \ 
> >    ! 'video/x-raw,width=640,height=480' \ 
> >    ! videoconvert \ 
> >    ! facedetect \ 
> >    ! videoconvert \ 
> >    ! xvimagesink
> > 
> > This should display the video stream from my web cam to a window,
> > with faces highlighted.  It does show the stream, but it's not
> > drawing boxes around the faces.
> > 
> > I think something with my environment might be messed up, as the
> > same pipeline had worked for me in the past.  Just not sure where
> > to start looking.  This is on Ubuntu 18.04, GStreamer 1.14.1, and
> > OpenCV 3.2.0.
> > 
> > Thanks,
> > Timm
> > 
> > _______________________________________________
> > gstreamer-devel mailing list
> > gstreamer-devel at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
> > 
> 
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel