ubuntu - gstreamer opencv 边缘检测

Question

我想将 edgedetect 与 gstreamer 结合使用。我之前检查过 gst-inspect。这是我得到的结果:

login@machine:~$ gst-inspect opencv
No such element or plugin 'opencv'
login@machine:~$ gst-inspect edgedetect
No such element or plugin 'edgedetect'

安装的插件是:

sudo apt-cache show gstreamer1.0-plugins-bad | grep Version
Version: 1.0.3-1~ubuntu12.04.1~ppa1
Gstreamer-Version: 1.0

“opencv”插件一定是插件坏了。我可以使用插件中包含的其他插件启动 gst-inspect，但不能启动 opencv 或 eddedetect。

我尝试从源代码安装插件，没有任何改变。

Answer 1

今天如果你想使用描述的 GStreamer OpenCV 插件 here和 here你只需要做的是:

sudo apt install gstreamer1.0-opencv

如果你想检查 edgedetect 插件是否可用(以及其他插件):

$ gst-inspect-1.0 edgedetect
Factory Details:
  Rank                     none (0)
  Long-name                edgedetect
  Klass                    Filter/Effect/Video
  Description              Performs canny edge detection on videos and images.
  Author                   Michael Sheldon <mike@mikeasoft.com>

Plugin Details:
  Name                     opencv
  Description              GStreamer OpenCV Plugins
  Filename                 /usr/lib/aarch64-linux-gnu/gstreamer-1.0/libgstopencv.so
  Version                  1.14.5
  License                  LGPL
  Source module            gst-plugins-bad
  Source release date      2019-05-29
  Binary package           GStreamer Bad Plugins (Ubuntu)
  Origin URL               https://launchpad.net/distros/ubuntu/+source/gst-plugins-bad1.0

GObject
 +----GInitiallyUnowned
       +----GstObject
             +----GstElement
                   +----GstBaseTransform
                         +----GstVideoFilter
                               +----GstOpencvVideoFilter
                                     +----GstEdgeDetect

测试是否正常:

$ gst-launch-1.0 videotestsrc ! videoconvert ! edgedetect ! videoconvert ! xvimagesink

它在我的 Jetson Nano 4Gb 和 Jetpack 4.5.1 上运行良好。

信息:

$ dpkg -L gstreamer1.0-opencv
/.
/usr
/usr/lib
/usr/lib/aarch64-linux-gnu
/usr/lib/aarch64-linux-gnu/gstreamer-1.0
/usr/lib/aarch64-linux-gnu/gstreamer-1.0/libgstopencv.so
/usr/share
/usr/share/doc
/usr/share/doc/gstreamer1.0-opencv
/usr/share/doc/gstreamer1.0-opencv/AUTHORS
/usr/share/doc/gstreamer1.0-opencv/NEWS.gz
/usr/share/doc/gstreamer1.0-opencv/README.Debian
/usr/share/doc/gstreamer1.0-opencv/README.gz
/usr/share/doc/gstreamer1.0-opencv/changelog.Debian.gz
/usr/share/doc/gstreamer1.0-opencv/copyright