motioncells

motioncells

Properties

gboolean calculatemotion Read / Write
gchar * cellscolor Read / Write
gchar * datafile Read / Write
gchar * datafileextension Read / Write
gboolean display Read / Write
gint gap Read / Write
gint gridx Read / Write
gint gridy Read / Write
gint minimummotionframes Read / Write
gchar * motioncellsidx Read / Write
gint motioncellthickness Read / Write
gchar * motionmaskcellspos Read / Write
gchar * motionmaskcoords Read / Write
gboolean postallmotion Read / Write
gint postnomotion Read / Write
gdouble sensitivity Read / Write
gdouble threshold Read / Write
gboolean usealpha Read / Write

Types and Values

struct GstMotioncells

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstElement
                ╰── GstBaseTransform
                    ╰── GstVideoFilter
                        ╰── GstOpencvVideoFilter
                            ╰── GstMotioncells

Description

Performs motion detection on videos.

Example launch line

1
 
gst-launch-1.0 videotestsrc pattern=18 ! videorate ! videoscale ! video/x-raw,width=320,height=240,framerate=5/1 ! videoconvert ! motioncells ! videoconvert ! xvimagesink

Synopsis

Element Information

plugin

 opencv

author

 Robert Jobbagy <jobbagy dot robert at gmail dot com>, Nicola Murino <nicola dot murino at gmail.com>

class

 Filter/Effect/Video

Element Pads

name

 sink

direction

 sink

presence

 always

details

 video/x-raw, format=(string)RGB, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]

name

 src

direction

 source

presence

 always

details

 video/x-raw, format=(string)RGB, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]

Functions

Types and Values

struct GstMotioncells

struct GstMotioncells;

Property Details

The “calculatemotion” property

  “calculatemotion”          gboolean

Toggles motion calculation. If FALSE, this filter does nothing.

Flags: Read / Write

Default value: TRUE

The “cellscolor” property

  “cellscolor”               gchar *

Color for motion cells in R,G,B format. Max per channel is 255.

Flags: Read / Write

Default value: "255,255,0"

The “datafile” property

  “datafile”                 gchar *

Location of motioncells data file (empty string means no saving).

Flags: Read / Write

Default value: NULL

The “datafileextension” property

  “datafileextension”        gchar *

Extension of datafile.

Flags: Read / Write

Default value: "vamc"

The “display” property

  “display”                  gboolean

Toggle display of motion cells on current frame.

Flags: Read / Write

Default value: FALSE

The “gap” property

  “gap”                      gint

Interval in seconds after which motion is considered finished and a motion finished bus message is posted.

Flags: Read / Write

Allowed values: [1,60]

Default value: 5

The “gridx” property

  “gridx”                    gint

Number of horizontal grid cells.

Flags: Read / Write

Allowed values: [8,32]

Default value: 10

The “gridy” property

  “gridy”                    gint

Number of vertical grid cells.

Flags: Read / Write

Allowed values: [8,32]

Default value: 10

The “minimummotionframes” property

  “minimummotionframes”      gint

Minimum number of motion frames triggering a motion event.

Flags: Read / Write

Allowed values: [1,60]

Default value: 1

The “motioncellsidx” property

  “motioncellsidx”           gchar *

Describe a cell with its line and column idx separated with ":". Pass multiple cells as a comma-separated list.

Flags: Read / Write

Default value: NULL

The “motioncellthickness” property

  “motioncellthickness”      gint

Motion Cell Border Thickness. Set to -1 to fill motion cell.

Flags: Read / Write

Allowed values: [G_MAXULONG,5]

Default value: 1

The “motionmaskcellspos” property

  “motionmaskcellspos”       gchar *

Describe a cell with its line and column idx separated with ":". Pass multiple cells as a comma-separated list.

Flags: Read / Write

Default value: NULL

The “motionmaskcoords” property

  “motionmaskcoords”         gchar *

Describe a region with its upper left and lower right x, y coordinates separated with ":". Pass multiple regions as a comma-separated list.

Flags: Read / Write

Default value: NULL

The “postallmotion” property

  “postallmotion”            gboolean

Post bus messages for every motion frame or just motion start and motion stop.

Flags: Read / Write

Default value: FALSE

The “postnomotion” property

  “postnomotion”             gint

If non 0, post a no_motion event on the bus if no motion is detected for the given number of seconds.

Flags: Read / Write

Allowed values: [0,180]

Default value: 0

The “sensitivity” property

  “sensitivity”              gdouble

Motion detection sensitivity.

Flags: Read / Write

Allowed values: [0,1]

Default value: 0.5

The “threshold” property

  “threshold”                gdouble

Threshold value for motion. Filter detects motion when at least this fraction of the cells have moved.

Flags: Read / Write

Allowed values: [0,1]

Default value: 0.01

The “usealpha” property

  “usealpha”                 gboolean

Toggle usage of alpha blending on frames with motion cells.

Flags: Read / Write

Default value: TRUE

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