# frei0r-filter-normaliz0r

Normalize (aka histogram stretch, contrast stretch)

## Hierarchy

    GObject
        ╰──GInitiallyUnowned
            ╰──GstObject
                ╰──GstElement
                    ╰──GstBaseTransform
                        ╰──GstVideoFilter
                            ╰──frei0r-filter-normaliz0r

## Factory details

Authors: – Sebastian Dröge <sebastian.droege>, Chungzuwalla (chungzuwalla@rling.com)</sebastian.droege>

Classification: – `Filter/Effect/Video`

Rank – none

Plugin – frei0r

Package – GStreamer Bad Plug-ins

## Pad Templates

### `sink`

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

Presence – always

Direction – sink

Object type – GstPad

### `src`

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

Presence – always

Direction – src

Object type – GstPad

## Properties

### blackpt-b

    “blackpt-b” gfloat

Output color to which darkest input color is mapped (default black)

Flags : Read / Write

Default value : 0

### blackpt-g

    “blackpt-g” gfloat

Output color to which darkest input color is mapped (default black)

Flags : Read / Write

Default value : 0

### blackpt-r

    “blackpt-r” gfloat

Output color to which darkest input color is mapped (default black)

Flags : Read / Write

Default value : 0

### independence

    “independence” gdouble

Proportion of independent to linked channel normalization (default 1.0)

Flags : Read / Write

Default value : 1

### smoothing

    “smoothing” gdouble

Amount of temporal smoothing of the input range, to reduce flicker (default 0.0)

Flags : Read / Write

Default value : 0

### strength

    “strength” gdouble

Strength of filter, from no effect to full normalization (default 1.0)

Flags : Read / Write

Default value : 1

### whitept-b

    “whitept-b” gfloat

Output color to which brightest input color is mapped (default white)

Flags : Read / Write

Default value : 1

### whitept-g

    “whitept-g” gfloat

Output color to which brightest input color is mapped (default white)

Flags : Read / Write

Default value : 1

### whitept-r

    “whitept-r” gfloat

Output color to which brightest input color is mapped (default white)

Flags : Read / Write

Default value : 1

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