View source for DePulse

{{FilterCat4|External_filters|Plugins|Restoration_filters|Film_Damage}}
{{Filter3
| 
| 2005/04/11
| [http://www5e.biglobe.ne.jp/~hoe/dv-and-movie/tipsxxx/depulse.zip depulse.zip]<br>[http://www5e.biglobe.ne.jp/~hoe/dv-and-movie/tipsxxx/DePulseC05061403.zip DePulseC05061403.zip]
| VHS Restoration
| Open source
|6=}}
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== Description ==
[[DePulse]] reduces the white noise that gets in the image. It seems to be the noise of the old fluorescent lamp or the engine of the motorcycle.

'''[[DePulse#DePulseC|DePulseC]]''' is sister product of [[DePulse]]. Just applying the same algorithm to the color difference. Reduces color pulse noise. Integrate with DePulse.

<!-- MAYNOTBERIGHT: Depulse is a dropout (also known as comets) reduction filter. Dropouts mainly present themselves as a horizontal line sometimes teardrop shaped, usually bright that pops on screen for one or two frames that can be staggered in intensity. -->

'''NOTE: documentation was translated from the Japanese readme.'''

<br>
== Requirements ==
* [x86]: [[AviSynth+]] or [https://sourceforge.net/projects/avisynth2/ AviSynth 2.5.8 or greater]
*Supported color formats: [[YUY2]]
*Top field interlacing only
<br>

== [[Script variables|Syntax and Parameters]] ==

===DePulse===
:{{Template:FuncDef|DePulse (clip, int "h", int "l", int "d", bool "debug")}}
<br>
::{{Par2| |clip| }}
:::Input clip.
<br>
::{{Par2|h|int|180}}
:::Luminance below <code>h</code> is not subject to white noise.
:::Range: 0-255
<br>
::{{Par2|l|int|60}}
:::Luminance above <code>l</code> is not subject to black noise.
:::Range: 0-255
<br>
::{{Par2|d|int|30}}
:::If the brightness is different from the pixels in the front and back (upper and lower) fields for <code>d</code> or more, it is determined as noise. (Common for white and black noise).
:::Range: 0-255
<br>
::{{Par2|debug|bool|false}}
:::When debug is set to true, pink and green color will be added to the part determined as white and black noise.
<br>
===DePulseC===
:{{Template:FuncDef|DePulseC (clip, int "h", int "l", int "d", bool "debug")}}
<br>
::{{Par2| |clip| }}
:::Input clip.
<br>
::{{Par2|h|int|180}}
:::Color differences less than <code>h</code> are not subject to color noise.
:::Range: 0-255
<br>
::{{Par2|l|int|60}}
:::Color differences greater than <code>l</code> are not subject to color noise.
:::Range: 0-255
<br>
::{{Par2|d|int|30}}
:::If the  color difference between the pixels in the front and back (upper and lower) fields is more than <code>d</code>, it is determined as noise. (Common for white and black noise).
:::Range: 0-255
<br>
::{{Par2|debug|bool|false}}
:::When debug is set to true, the part determined as color noise becomes white and black.
<br>

== Examples ==
DePulse with default settings:
 [[AviSource]]("Blah.avi")
 DePulse (h=180, l=60, d=30, debug=false)

DePulseC with default settings:
 [[AviSource]]("Blah.avi")
 DePulseC (h=180, l=60, d=30, debug=false)
*DePulseC Hint: First, adjust <code>h</code> to around <code>h=50</code>, <code>l=200</code> and adjust <code>d</code> (about 20 to 50?).<br>You may have some side effects. After that, gradually increase <code>h</code> and lower <code>l</code> to reduce side effects.
<br>
== Archived Downloads ==
{| class="wikitable" border="1"; width="600px"
|-
!!width="100px"| Version
!!width="150px"| Download
!!width="150px"| Mirror
|-
!2005/04/11
|[http://www5e.biglobe.ne.jp/~hoe/dv-and-movie/tipsxxx/depulse.zip depulse.zip]
----------
[http://www5e.biglobe.ne.jp/~hoe/dv-and-movie/tipsxxx/DePulseC05061403.zip DePulseC05061403.zip]
|[https://web.archive.org/web/20170211161020if_/http://www5e.biglobe.ne.jp/~hoe/dv-and-movie/tipsxxx/depulse.zip depulse.zip]
----------
[https://web.archive.org/web/20170211160944if_/http://www5e.biglobe.ne.jp/~hoe/dv-and-movie/tipsxxx/DePulseC05061403.zip DePulseC05061403.zip]
|}
<br>
== External Links ==
*[http://www5e.biglobe.ne.jp/~hoe/dv-and-movie/tipsxxx/index.html Homepage (in Japanese)] 
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