No Facial Detection Ubuntu 18.04

[Martin Vachovski]

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
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