No Facial Detection Ubuntu 18.04
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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 [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
Re: No Facial Detection Ubuntu 18.04
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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 <[hidden email]> on behalf of Timm Murray <[hidden email]>
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 [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
Re: No Facial Detection Ubuntu 18.04
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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. Next question is if this should be fixed in the plugin, or the Ubuntu package? Thanks, Timm On Tue, Sep 11, 2018 at 8:06 AM, Martin Vachovski <[hidden email]> wrote:
_______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
Re: No Facial Detection Ubuntu 18.04
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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 < > [hidden email]> 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 < > > [hidden email]> on behalf of Timm > > Murray <[hidden email]> > > 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 > > [hidden email] > > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel > > > > _______________________________________________ > gstreamer-devel mailing list > [hidden email] > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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