GStreamer Motion Overlay Element

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The GStreamer element is called "rrmotionoverlay". This element performs the drawing of the bounding boxes. The "rrmotionoverlay" receives as input a frame in GRAY8 or RGBA format and outputs a GRAY8 or RGBA frame.

Main Properties

  • Color: With this property you can choose the color to use for the bounding box (big-endian ARGB). By default it is 4294967295(hex:FFFFFFFF).
  • Draw: With this property when enabled a bounding box will be drawn around each detected blob. By default it is true.
  • Thickness: With this property you change the line thickness to use for the bounding box. By default it is 10 and the units are positive integers.


Capabilities

This section overviews the Motion Overlay input and output capabilities.

Below is the full output of the gst-inspect-1.0 command:


Factory Details:
  Rank                     none (0)
  Long-name                Motion Bounding Boxes Overlay
  Klass                    Filter/Editor/Video
  Description              Add motion bounding boxes on top of a video buffer
  Author                   Melissa Montero <melissa.montero@ridgerun.com>

Plugin Details:
  Name                     rrmotiondetection
  Description              Motion detection components based on OpenCV
  Filename                 /usr/lib/aarch64-linux-gnu/gstreamer-1.0/libgstrrmotiondetection.so
  Version                  0.1.1  License                  Proprietary
  Source module            gstrrmotiondetection
  Binary package           gstrrmotiondetection
  Origin URL               www.ridgerun.com

GObject
 +----GInitiallyUnowned
       +----GstObject
             +----GstElement
                   +----GstBaseTransform
                         +----GstVideoFilter
                               +----GstRrMotionOverlay

Pad Templates:
  SRC template: 'src'
    Availability: Always
    Capabilities:
      video/x-raw
                 format: { (string)RGBA, (string)GRAY8 }
                  width: [ 1, 2147483647 ]
                 height: [ 1, 2147483647 ]
              framerate: [ 0/1, 2147483647/1 ]
  
  SINK template: 'sink'
    Availability: Always
    Capabilities:
      video/x-raw
                 format: { (string)RGBA, (string)GRAY8 }
                  width: [ 1, 2147483647 ]
                 height: [ 1, 2147483647 ]
              framerate: [ 0/1, 2147483647/1 ]

Element has no clocking capabilities.
Element has no URI handling capabilities.

Pads:
  SINK: 'sink'
    Pad Template: 'sink'
  SRC: 'src'
    Pad Template: 'src'

Element Properties:
  color               : Color to use for bounding box (big-endian ARGB).
                        flags: readable, writable
                        Unsigned Integer. Range: 0 - 4294967295 Default: 4294967295 
  draw                : When enabled, bounding box will be drawn around each detected blob
                        flags: readable, writable
                        Boolean. Default: true
  name                : The name of the object
                        flags: readable, writable
                        String. Default: "rrmotionoverlay0"
  parent              : The parent of the object
                        flags: readable, writable
                        Object of type "GstObject"
  qos                 : Handle Quality-of-Service events
                        flags: readable, writable
                        Boolean. Default: true
  thickness           : Line thickness to use for bounding box
                        flags: readable, writable
                        Unsigned Integer. Range: 1 - 4294967295 Default: 10


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