DePulse

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| 2005/04/11
 
| 2005/04/11
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| [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]
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| [http://www5e.biglobe.ne.jp/~hoe/dv-and-movie/tipsxxx/depulse.zip depulse.zip]
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--------
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[http://www5e.biglobe.ne.jp/~hoe/dv-and-movie/tipsxxx/DePulseC05061403.zip DePulseC05061403.zip]
 
| VHS Restoration
 
| VHS Restoration
 
| Open source
 
| Open source
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|6=}}
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|6=[https://forum.doom9.org/showthread.php?t=151426 Doom9 Forum]}}
 
<br>
 
<br>
 
== Description ==
 
== Description ==
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[[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.
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[[DePulse]] is dropout remover, removes white/black noise horizontal streaking in analogue captures. Spatio-Temporal.
  
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'''[[DePulse#DePulseC|DePulseC]]''' is sister product of [[DePulse]]. Just applying the same algorithm to the color difference. Reduces color pulse noise. Integrate with DePulse.
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'''[[DePulse#DePulseC|DePulseC]]''' is sister product of '''[[DePulse#DePulse|DePulse]]'''. Just applying the same algorithm to the color difference. Reduces color pulse noise. Integrate with DePulse.
  
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<!-- 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. -->
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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.
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+
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'''NOTE: documentation was translated from the Japanese readme.'''
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<br>
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* [x86]: [[AviSynth+]] or [https://sourceforge.net/projects/avisynth2/ AviSynth 2.5.8 or greater]
 
* [x86]: [[AviSynth+]] or [https://sourceforge.net/projects/avisynth2/ AviSynth 2.5.8 or greater]
 
*Supported color formats: [[YUY2]]
 
*Supported color formats: [[YUY2]]
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*Top field interlacing only
 
 
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<br>
  
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<br>
 
::{{Par2| |clip| }}
 
::{{Par2| |clip| }}
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:::Input clip.
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:::Input clip must be YUY2. Assumes TFF (top field first) field order interlacing.
 
<br>
 
<br>
 
::{{Par2|h|int|180}}
 
::{{Par2|h|int|180}}
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:::Luminance below <code>h</code> is not subject to white noise.
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:::Pixel brightness values greater than <code>h</code> (high) are targeted as white noise.
 +
:::If a pixel (t) is target'ed as white noise then surrounding pixels (above, below, before and after [temporal], Not left and right) are tested and if ALL of them are less than (t - d) the target pixel t is depulsed.
 
:::Range: 0-255
 
:::Range: 0-255
 
<br>
 
<br>
 
::{{Par2|l|int|60}}
 
::{{Par2|l|int|60}}
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:::Luminance above <code>l</code> is not subject to black noise.
+
:::Pixel brightness values less than <code>l</code> (low) are targeted as black noise.
 +
:::If a pixel (t) is target'ed as black noise then surrounding pixels (above, below, before and after [temporal], Not left and right) are tested and if ALL of them are greater than (t + d) the target pixel t is depulsed.
 
:::Range: 0-255
 
:::Range: 0-255
 
<br>
 
<br>
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<br>
 
<br>
 
::{{Par2|debug|bool|false}}
 
::{{Par2|debug|bool|false}}
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:::When debug is set to true, pink and green color will be added to the part determined as white and black noise.
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:::If <code>debug=true</code>, pixels judged to be black or white noise are coloured pink or green.
 
<br>
 
<br>
 
===DePulseC===
 
===DePulseC===
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<br>
 
<br>
 
::{{Par2| |clip| }}
 
::{{Par2| |clip| }}
−
:::Input clip.
+
:::Input clip must be YUY2. Assumes TFF (top field first) field order interlacing.
 
<br>
 
<br>
 
::{{Par2|h|int|180}}
 
::{{Par2|h|int|180}}
−
:::Color differences less than <code>h</code> are not subject to color noise.
+
:::Color difference values greater than <code>h</code> (high) are targeted as color noise.
−
:::Range: 0-255
+
:::If a pixel (t) is target'ed as white noise then surrounding pixels (above, below, before and after [temporal], Not left and right) are tested and if ALL of them are less than (t - d) the target pixel t is depulsed.
 +
:::Range: 0-255 (does not concern itself with the 128 chroma offset, so args 'h' and 'l' are range 0-255 (16-240))
 
<br>
 
<br>
 
::{{Par2|l|int|60}}
 
::{{Par2|l|int|60}}
−
:::Color differences greater than <code>l</code> are not subject to color noise.
+
:::Color difference values less than <code>l</code> (low) are targeted as color noise.
−
:::Range: 0-255
+
:::If a pixel (t) is target'ed as black noise then surrounding pixels (above, below, before and after [temporal], Not left and right) are tested and if ALL of them are greater than (t + d) the target pixel t is depulsed.
 +
:::Range: 0-255 (does not concern itself with the 128 chroma offset, so args 'h' and 'l' are range 0-255 (16-240))
 
<br>
 
<br>
 
::{{Par2|d|int|30}}
 
::{{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).
+
:::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.
 
:::Range: 0-255
 
:::Range: 0-255
 
<br>
 
<br>
 
::{{Par2|debug|bool|false}}
 
::{{Par2|debug|bool|false}}
−
:::When debug is set to true, the part determined as color noise becomes white and black.
+
:::If <code>debug=true</code>, pixels judged to be color noise are coloured white or black.
 
<br>
 
<br>
  

Revision as of 06:23, 1 June 2020

Abstract
Author
Version 2005/04/11
Download depulse.zip

DePulseC05061403.zip

Category VHS Restoration
License Open source
Discussion Doom9 Forum


Contents

Description

DePulse is dropout remover, removes white/black noise horizontal streaking in analogue captures. Spatio-Temporal.

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

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.


Requirements


Syntax and Parameters

DePulse

DePulse (clip, int "h", int "l", int "d", bool "debug")


clip   =
Input clip must be YUY2. Assumes TFF (top field first) field order interlacing.


int  h = 180
Pixel brightness values greater than h (high) are targeted as white noise.
If a pixel (t) is target'ed as white noise then surrounding pixels (above, below, before and after [temporal], Not left and right) are tested and if ALL of them are less than (t - d) the target pixel t is depulsed.
Range: 0-255


int  l = 60
Pixel brightness values less than l (low) are targeted as black noise.
If a pixel (t) is target'ed as black noise then surrounding pixels (above, below, before and after [temporal], Not left and right) are tested and if ALL of them are greater than (t + d) the target pixel t is depulsed.
Range: 0-255


int  d = 30
If the brightness is different from the pixels in the front and back (upper and lower) fields for d or more, it is determined as noise. (Common for white and black noise).
Range: 0-255


bool  debug = false
If debug=true, pixels judged to be black or white noise are coloured pink or green.


DePulseC

DePulseC (clip, int "h", int "l", int "d", bool "debug")


clip   =
Input clip must be YUY2. Assumes TFF (top field first) field order interlacing.


int  h = 180
Color difference values greater than h (high) are targeted as color noise.
If a pixel (t) is target'ed as white noise then surrounding pixels (above, below, before and after [temporal], Not left and right) are tested and if ALL of them are less than (t - d) the target pixel t is depulsed.
Range: 0-255 (does not concern itself with the 128 chroma offset, so args 'h' and 'l' are range 0-255 (16-240))


int  l = 60
Color difference values less than l (low) are targeted as color noise.
If a pixel (t) is target'ed as black noise then surrounding pixels (above, below, before and after [temporal], Not left and right) are tested and if ALL of them are greater than (t + d) the target pixel t is depulsed.
Range: 0-255 (does not concern itself with the 128 chroma offset, so args 'h' and 'l' are range 0-255 (16-240))


int  d = 30
If the color difference between the pixels in the front and back (upper and lower) fields is more than d, it is determined as noise.
Range: 0-255


bool  debug = false
If debug=true, pixels judged to be color noise are coloured white or black.


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 h to around h=50, l=200 and adjust d (about 20 to 50?).
    You may have some side effects. After that, gradually increase h and lower l to reduce side effects.


Archived Downloads

Version Download Mirror
2005/04/11 depulse.zip

DePulseC05061403.zip

depulse.zip

DePulseC05061403.zip


External Links



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