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edgedetect

edgedetect

Properties

gint aperture Read / Write
gboolean mask Read / Write
gint threshold1 Read / Write
gint threshold2 Read / Write

Types and Values

struct GstEdgeDetect

Object Hierarchy

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

Description

Performs canny edge detection on videos and images

Example launch line

1
gst-launch-1.0 videotestsrc ! decodebin ! videoconvert ! edgedetect ! videoconvert ! xvimagesink

Synopsis

Element Information

plugin

opencv

author

Michael Sheldon <mike@mikeasoft.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 GstEdgeDetect

struct GstEdgeDetect;

Property Details

The “aperture” property

  “aperture”                 gint

Aperture size for Sobel operator (Must be either 3, 5 or 7.

Flags: Read / Write

Allowed values: [3,7]

Default value: 3


The “mask” property

  “mask”                     gboolean

Sets whether the detected edges should be used as a mask on the original input or not.

Flags: Read / Write

Default value: TRUE


The “threshold1” property

  “threshold1”               gint

Threshold value for canny edge detection.

Flags: Read / Write

Allowed values: [0,1000]

Default value: 50


The “threshold2” property

  “threshold2”               gint

Second threshold value for canny edge detection.

Flags: Read / Write

Allowed values: [0,1000]

Default value: 150

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