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Showing content from https://gstreamer.freedesktop.org/documentation/opencv/handdetect.html below:

handdetect

Performs hand gesture detection on videos, providing detected hand positions via bus message and navigation event, and deals with hand gesture events

Authors: – Andol Li

Classification: – Filter/Effect/Video

Rank – none

Plugin – opencv

Package – GStreamer Bad Plug-ins

video/x-raw:
         format: RGB
          width: [ 1, 2147483647 ]
         height: [ 1, 2147483647 ]
      framerate: [ 0/1, 2147483647/1 ]

Presence – always

Direction – sink

Object type – GstPad

video/x-raw:
         format: RGB
          width: [ 1, 2147483647 ]
         height: [ 1, 2147483647 ]
      framerate: [ 0/1, 2147483647/1 ]

Presence – always

Direction – src

Object type – GstPad

“ROI-HEIGHT” gint

HEIGHT of left-top pointer in region of interest Gestures in the defined region of interest will emit messages

Flags : Read / Write

Default value : 0

“ROI-WIDTH” gint

WIDTH of left-top pointer in region of interest Gestures in the defined region of interest will emit messages

Flags : Read / Write

Default value : 0

“ROI-X” gint

X of left-top pointer in region of interest Gestures in the defined region of interest will emit messages

Flags : Read / Write

Default value : 0

“ROI-Y” gint

Y of left-top pointer in region of interest Gestures in the defined region of interest will emit messages

Flags : Read / Write

Default value : 0

“display” gboolean

Whether the detected hands are highlighted in output frame

Flags : Read / Write

Default value : true

“profile-fist” gchararray

Location of HAAR cascade file (fist gesture)

Flags : Read / Write

Default value : /usr/share/opencv4/haarcascades//fist.xml

“profile-palm” gchararray

Location of HAAR cascade file (palm gesture)

Flags : Read / Write

Default value : /usr/share/opencv4/haarcascades//palm.xml

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