dewarp

Dewarp fisheye images

Example launch line

 gst-launch-1.0 videotestsrc ! videoconvert ! circle radius=0.1 height=80  ! dewarp outer-radius=0.35 inner-radius=0.1 ! videoconvert ! xvimagesink

Hierarchy

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

Factory details

Authors: – Nicola Murino

Classification: – Filter/Effect/Video

Rank – none

Plugin – opencv

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

display-mode

“display-mode” Dewarp-display-mode *

How to display the dewarped image

Flags : Read / Write

Default value : single-panorama (0)

inner-radius

“inner-radius” gdouble

Inner radius of the fisheye image donut. If outer radius <= inner radius the element will work in passthrough mode

Flags : Read / Write

Default value : 0

interpolation-method

“interpolation-method” Dewarp-interpolation-mode *

Interpolation method to use

Flags : Read / Write

Default value : bilinear (1)

outer-radius

“outer-radius” gdouble

Outer radius of the fisheye image donut. If outer radius <= inner radius the element will work in passthrough mode

Flags : Read / Write

Default value : 0

x-center

“x-center” gdouble

X axis center of the fisheye image

Flags : Read / Write

Default value : 0.5

x-remap-correction

“x-remap-correction” gdouble

Correction factor for remapping on x axis. A correction is needed if the fisheye image is not inside a circle

Flags : Read / Write

Default value : 1

y-center

“y-center” gdouble

Y axis center of the fisheye image

Flags : Read / Write

Default value : 0.5

y-remap-correction

“y-remap-correction” gdouble

Correction factor for remapping on y axis. A correction is needed if the fisheye image is not inside a circle

Flags : Read / Write

Default value : 1

Named constants

Dewarp-display-mode

Members

single-panorama (0) – Single panorama image

double-panorama (1) – Dewarped image is split in two images displayed one below the other

quad-view (2) – Dewarped image is split in four images dysplayed as a quad view

Dewarp-interpolation-mode

Members

nearest (0) – A nearest-neighbor interpolation

bilinear (1) – A bilinear interpolation

bicubic (2) – A bicubic interpolation over 4x4 pixel neighborhood

Lanczos (3) – A Lanczos interpolation over 8x8 pixel neighborhood

The results of the search are