View source for DeNoise

{{FilterCat|External_filters|Plugins|Denoisers}}
{{Filter3
|1={{Author/vcmohan}}
|2=22 Nov 2015
|3= [http://www.avisynth.nl/users/vcmohan/DeNoise/DeNoise_2_6.zip DeNoise_2_6.zip]
|4=External filters
|5=<!-- license -->[https://www.gnu.org/licenses/gpl-3.0.en.html GPLv3]
|6=[https://forum.doom9.org/showthread.php?p=712586#post712586 Doom9 Forum]}}

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== 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.
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== Requirements ==
* [x86]: [[AviSynth+]] or [https://sourceforge.net/projects/avisynth2/ AviSynth 2.6]
* Supported color formats: [[RGB24]], [[RGB32]], [[YUY2]], [[Y8]], [[YV12]], [[YV16]], [[YV24]]
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== [[Script variables|Syntax and Parameters]] ==
:{{Template:FuncDef| 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")}}

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::{{Par2| |clip| }}
::: Input clip.
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::{{Par2|sf|int|0}}
:::Starting frame number to process.
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::{{Par2|ef|int| }}
:::End frame number to process, default is the last frame.
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::{{Par2|xgrid|int|5}}
::: Number of pixels along x axis in moving grid.
:::* Between 3 to 9
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::{{Par2|ygrid|int|xgrid}}
::: Number of pixels along y axis in moving grid.
:::* Between 3 to 9
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::{{Par2|getvar|bool|true}}
::: Is Global variance to be computed?
:::* True for yes, false for is specified.
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::{{Par2|clip|bool|true}}
::: Is variance valid for all clip or only frame?
:::* True for yes, false for for frame.
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::{{Par2|lx|int|None. Must be specified}}
::: Window left x at start frame for computing global variance.
:::* Within clip, less than <code>rx</code>.
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::{{Par2|ty|int|None. Must be specified}}
::: Window top y at start frame for computing global variance.
:::* Within clip, less than <code>by</code>.
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::{{Par2|rx|int|None. Must be specified}}
::: Window right x at start frame for computing global variance.
:::* Within clip, more than <code>lx</code>.
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::{{Par2|by|int|None. Must be specified}}
::: Window bottom y at start frame for computing global varianc.
:::* Within clip, more than <code>ty</code>.
::{{Par2|elx|int|None. Must be specified}}
::: Window left x at end frame for computing global variance.
:::* Within clip, less than <code>erx</code>.
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::{{Par2|ety|int|None. Must be specified}}
::: Window top y at end frame for computing global variance.
:::* Within clip, less than <code>eby</code>.
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::{{Par2|erx|int|None. Must be specified}}
::: Window right x at end frame for computing global variance.
:::* Within clip, more than <code>elx</code>.
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::{{Par2|eby|int|None. Must be specified}}
::: Window bottom y at end frame for computing global variance.
:::* Within clip, more than <code>ety</code>.
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::{{Par2|var|int|100}}
:::Variance specified at start frame.
:::*Range: greater than 0
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::{{Par2|evar|int|<code>var</code>}}
:::Variance at end frame.
:::*Range: greater than 0
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::{{Par2|uv|bool|true}}
::: Whether U and V of YUY2 and YUV formats to be processed.
:::* true = uv process
:::* false = do not process uv
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::{{Par2|usey|bool|false}}
::: Whether variance of Y to be used for u and v also.
:::* true = yes
:::* false = no
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::{{Par2|show|bool|false}}
::: Whether variance values are to be displayed as an error message.
:::* true = yes
:::* false = no
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== Examples ==
<!-- example code block: 1st char in each line = space -->
*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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