# frei0r-filter-opencvfacedetect

detect faces and draw shapes on them

## Hierarchy

    GObject
        ╰──GInitiallyUnowned
            ╰──GstObject
                ╰──GstElement
                    ╰──GstBaseTransform
                        ╰──GstVideoFilter
                            ╰──frei0r-filter-opencvfacedetect

## Factory details

Authors: – Sebastian Dröge <sebastian.droege>, binarymillenium, ddennedy</sebastian.droege>

Classification: – `Filter/Effect/Video`

Rank – none

Plugin – frei0r

Package – GStreamer Bad Plug-ins

## Pad Templates

### `sink`

    video/x-raw:
             format: { BGRA, RGBA, ABGR, ARGB, BGRx, RGBx, xBGR, xRGB, AYUV }
              width: [ 1, 2147483647 ]
             height: [ 1, 2147483647 ]
          framerate: [ 0/1, 2147483647/1 ]

Presence – always

Direction – sink

Object type – GstPad

### `src`

    video/x-raw:
             format: { BGRA, RGBA, ABGR, ARGB, BGRx, RGBx, xBGR, xRGB, AYUV }
              width: [ 1, 2147483647 ]
             height: [ 1, 2147483647 ]
          framerate: [ 0/1, 2147483647/1 ]

Presence – always

Direction – src

Object type – GstPad

## Properties

### alpha

    “alpha” gdouble

The alpha channel value for the shapes

Flags : Read / Write

Default value : 1

### antialias

    “antialias” gboolean

Draw with antialiasing

Flags : Read / Write

Default value : false

### classifier

    “classifier” gchararray

Full path to the XML pattern model for recognition; look in /usr/share/opencv/haarcascades

Flags : Read / Write

Default value : /usr/share/opencv/haarcascades/haarcascade_frontalface_default.xml

### color-1-b

    “color-1-b” gfloat

The color of the first object

Flags : Read / Write

Default value : 1

### color-1-g

    “color-1-g” gfloat

The color of the first object

Flags : Read / Write

Default value : 1

### color-1-r

    “color-1-r” gfloat

The color of the first object

Flags : Read / Write

Default value : 1

### color-2-b

    “color-2-b” gfloat

The color of the second object

Flags : Read / Write

Default value : 1

### color-2-g

    “color-2-g” gfloat

The color of the second object

Flags : Read / Write

Default value : 0.5

### color-2-r

    “color-2-r” gfloat

The color of the second object

Flags : Read / Write

Default value : 0

### color-3-b

    “color-3-b” gfloat

The color of the third object

Flags : Read / Write

Default value : 1

### color-3-g

    “color-3-g” gfloat

The color of the third object

Flags : Read / Write

Default value : 1

### color-3-r

    “color-3-r” gfloat

The color of the third object

Flags : Read / Write

Default value : 0

### color-4-b

    “color-4-b” gfloat

The color of the fourth object

Flags : Read / Write

Default value : 0

### color-4-g

    “color-4-g” gfloat

The color of the fourth object

Flags : Read / Write

Default value : 1

### color-4-r

    “color-4-r” gfloat

The color of the fourth object

Flags : Read / Write

Default value : 0

### color-5-b

    “color-5-b” gfloat

The color of the fifth object

Flags : Read / Write

Default value : 0

### color-5-g

    “color-5-g” gfloat

The color of the fifth object

Flags : Read / Write

Default value : 0.5

### color-5-r

    “color-5-r” gfloat

The color of the fifth object

Flags : Read / Write

Default value : 1

### neighbors

    “neighbors” gdouble

Minimum number of rectangles that makes up an object, divided by 100

Flags : Read / Write

Default value : 0.02

### recheck

    “recheck” gdouble

How often to detect an object in number of frames, divided by 1000

Flags : Read / Write

Default value : 0.025

### scale

    “scale” gdouble

Down scale the image prior detection

Flags : Read / Write

Default value : 0.666667

### search-scale

    “search-scale” gdouble

The search window scale factor, divided by 10

Flags : Read / Write

Default value : 0.12

### shape

    “shape” gdouble

The shape to draw: 0=circle, 0.1=ellipse, 0.2=rectangle, 1=random

Flags : Read / Write

Default value : 0

### smallest

    “smallest” gdouble

Minimum window size in pixels, divided by 1000

Flags : Read / Write

Default value : 0

### stroke

    “stroke” gdouble

Line width, divided by 100, or fill if 0

Flags : Read / Write

Default value : 0

### threads

    “threads” gdouble

How many threads to use divided by 100; 0 uses CPU count

Flags : Read / Write

Default value : 0.01

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