DeNoise

Latest revision as of 03:44, 10 June 2020

[edit] Description

This is an adaptive local noise reduction filter. It uses global variance of the noise, local mean and local variance in a moving grid of specified size. It tries to preserve edges as closely as possible.

• Official documentation: http://www.avisynth.nl/users/vcmohan/DeNoise/DeNoise.html
• For AviSynth+ see modPlus, includes high bit depth colorspace support and 64-bit.

[edit] Requirements

• [x86]: AviSynth+ or AviSynth 2.6
• Supported color formats: RGB24, RGB32, YUY2, Y8, YV12, YV16, YV24

[edit] Syntax and Parameters

DeNoise (clip, int "sf", int "ef", int "xgrid", int "ygrid", bool "getvar", bool "clip", int "lx", int "ty", int "rx", int "by", int "elx", int "ety", int "erx", int "eby", int "var", int "evar", bool "uv", bool "usey", bool "show")

clip   =

Input clip.

int  sf = 0

Starting frame number to process.

int  ef =

End frame number to process, default is the last frame.

int  xgrid = 5

Number of pixels along x axis in moving grid.

• Between 3 to 9

int  ygrid = xgrid

Number of pixels along y axis in moving grid.

• Between 3 to 9

bool  getvar = true

Is Global variance to be computed?

• True for yes, false for is specified.

bool  clip = true

Is variance valid for all clip or only frame?

• True for yes, false for for frame.

int  lx = None. Must be specified

Window left x at start frame for computing global variance.

• Within clip, less than rx.

int  ty = None. Must be specified

Window top y at start frame for computing global variance.

• Within clip, less than by.

int  rx = None. Must be specified

Window right x at start frame for computing global variance.

• Within clip, more than lx.

int  by = None. Must be specified

Window bottom y at start frame for computing global varianc.

• Within clip, more than ty.

int  elx = None. Must be specified

Window left x at end frame for computing global variance.

• Within clip, less than erx.

int  ety = None. Must be specified

Window top y at end frame for computing global variance.

• Within clip, less than eby.

int  erx = None. Must be specified

Window right x at end frame for computing global variance.

• Within clip, more than elx.

int  eby = None. Must be specified

Window bottom y at end frame for computing global variance.

• Within clip, more than ety.

int  var = 100

Variance specified at start frame.

• Range: greater than 0

int  evar = var

Variance at end frame.

• Range: greater than 0

bool  uv = true

Whether U and V of YUY2 and YUV formats to be processed.

• true = uv process
• false = do not process uv

bool  usey = false

Whether variance of Y to be used for u and v also.

• true = yes
• false = no

bool  show = false

Whether variance values are to be displayed as an error message.

• true = yes
• false = no

[edit] Examples

• DeNoise with default values:

AviSource("blah.avi")
DeNoise()

• Process all frames (sf and ef parameters are omitted):

DeNoise(getvar=false, var=120, evar=160, xgrid=5, ygrid=7) 

• Process only frames 35-55:

DeNoise(sf=35, ef=55, clip=false, lx=220, rx=245, ty=322, by=402) 

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