项目作者: avisynth-repository

项目描述 :
"Defish" - barrel and pincushion distortion correction filter
高级语言: C++
项目地址: git://github.com/avisynth-repository/Defish.git
创建时间: 2019-06-09T17:42:54Z
项目社区:https://github.com/avisynth-repository/Defish

开源协议:GNU General Public License v2.0

下载


Defish

“Defish” - barrel and pincushion distortion correction filter
defish (v1.1) MT for Avisynth 2.5
(c) David Horman, 2010
Multithreaded version (c) 2011 Andrey “Efenstor” Pivovarov

This filter can be used to correct (or induce) barrel and pincushion
distortion.

USAGE

The filter takes the following parameters (in addition to the input clip):

  • [unnamed]
    Input clip. Must be RGB32 and have even width/height.

  • fov
    useful range: -180.0 - 180.0
    default: 0
    The horizontal field of view, in degrees. Positive values will
    correct barrel distortion (induce pincushioning). Negative values
    should correct pincushion distortion (induce barreling), but note
    that this may currently be implemented incorrectly.

  • scale

    1. range: 0.0 - infinity

    default: 1.0
    An adjustment parameter which scales the image after correction.

  • aspect
    range: 0.0 - infinity
    default: 1.0
    The pixel aspect ratio of the input clip.

  • direction
    values: “x”, “y”
    This parameter restricts the correction to either horizontal or
    vertical only.

  • scaling
    values: “fitx”, “fity”, “fitxy”
    This parameter automatically scales the image to fill the image
    horizontally, vertically, or both. The “scale” parameter above is
    still effective.

    The default behaviour when using fov is to scale the image such
    that the central area stays at the original scale.

    This parameter is not effective when using the polynomial values
    below.

  • a,b,c

    1. sensible range: 0.0 - 1.0
    2. Parameters for correcting distortion polynomially. These are only
    3. effective when fov=0 (which is the default value).
    4. a+b+c must be less than or equal to 1.0 when pin=true.
  • pin
    boolean
    Set this to true to correct pincushion distortion, and false to
    correct barrel distortion - this may seem the wrong way around but
    it was chosen to match the behaviour of the similar parameter of
    V.C. Mohan’s DeBarrel filter.

  • threads

    1. range: 0 - infinity
    2. 0 (default) sets the number of processing threads to the number of
    3. autodetected CPU's/cores.