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{{FilterCat|External_filters|Adjustment_filters|Sharpeners}}
{{FilterCat4|External_filters|Scripts|Adjustment_filters|Sharpeners}}
{{Filter|{{Author/Didee}}|v1.0 - Update 2012/04/12|[http://forum.doom9.org/showthread.php?p=1569035#post1569035 FineSharp]|Sharpeners|
{{Filter3
[[YV12]]
| {{Author/Didée}}
|}}
| 2012/04/12
| [http://avisynth.nl/images/FineSharp.avsi FineSharp.avsi]
| Sharpeners
|
|6=[http://forum.doom9.org/showthread.php?p=1569035 Doom9 Thread]}}
<br>
== Description ==
Small and relatively fast realtime-sharpening function, for 1080p, or after scaling 720p -> 1080p during playback (to make 720p look more like being 1080p).<br>
It's a generic sharpener. Only for good quality sources! (If the source is crap, FineSharp will happily sharpen the crap.) ;) Noise/grain will be enhanced, too. The method is GENERIC.


== Abstract ==
Modus operandi: A basic nonlinear sharpening method is performed, then the *blurred* sharp-difference gets subtracted again. <br>
A quick sharpening filter by Didee for sharpening high quality content, such as Bluray.
<br>
== Requirements ==
* AviSynth 2.5.8 or [http://sourceforge.net/projects/avisynth2/ greater]
* [[FAQ_different_types_content#How_do_I_recognize_progressive.2C_interlaced.2C_telecined.2C_hybrid_and_blended_content.3F|Progressive]] input only
* Supported color formats: [[YV12]]


== The script ==
=== Required Plugins ===
Located [http://forum.doom9.org/showthread.php?p=1569035#post1569035 here].
Latest versions of the following filters are recommended unless stated otherwise.<br>
*[[MaskTools2]]
*<strike>RemoveGrain and Repair - part of the [[RemoveGrain v1.0b]] package.</strike>
*[[RgTools]] - recommended drop-in replacement for RemoveGrain & Repair!
Additional [[planar]] colorspaces are supported when using AviSynth 2.6, RgTools and appropriate MaskTools2.
<br>
<br>


And mirrored below in case of disaster (not guarranteed to be up to date, retrieved July 16th, 2012).
== [[Script variables|Syntax and Parameters]] ==
:{{Template:FuncDef|FineSharp (''clip'' c, ''int'' "mode", ''float'' "sstr", ''float'' "cstr", ''float'' "xstr", ''float'' "lstr", ''float'' "pstr", ''float'' "ldmp")}}
<br>
::{{Par2|c|clip| }}
::::Input clip.
<br>
::{{Par2|mode|int|1}}
:::Range: 1 to 3
::::1 to 3, weakest to strongest. When negative -1 to -3, a broader kernel for equalization is used.
<br>
::{{Par2|sstr|float|2.0}}
:::Range: 0.0 up to ??
::::Strength of sharpening.
<br>
::{{Par2|cstr|float|AUTO}}
:::Range: 0.0 - 2.0 ?<br>
::::Strength of equalization.
::::Recommended value: 0.5 to 1.25
::::If all settings are left at their default value then {{Template:FuncDef|cstr}}=0.9
<br>
::{{Par2|xstr|float|0.19}}
:::Range: 0.0 - 1.0 (but, better don't go beyond 0.249 ...)<br>
::::Strength of XSharpen-style final sharpening.
<br>
::{{Par2|lstr|float|1.49}}
::::Modifier for non-linear sharpening.
<br>
::{{Par2|pstr|float|1.272}}
::::Exponent for non-linear sharpening.
<br>
::{{Par2|ldmp|float|{{Template:FuncDef|sstr}}+0.1}}
::::"low damp", to not overenhance very small differences (noise coming out of flat areas).
::::If {{Template:FuncDef|sstr}} is left at its default value (2.0) then {{Template:FuncDef|ldmp}}=2.1
<br>
== Examples ==
FineSharp with default settings:
[[AviSource]]("Blah.avi")
FineSharp(mode=1, sstr=2.0, cstr=0.9, xstr=0.19, lstr=1.49, pstr=1.272, ldmp=2.1)


<pre>
More examples:
# Small and relatively fast realtime-sharpening function,  
FineSharp(mode=2, sstr=2.0,  cstr=1.3, xstr=0.0,  lstr=1.49, pstr=1.472, ldmp=4.2) ## moderate
# for 1080p, or after scaling 720p -> 1080p during playback (to make 720p look more like being 1080p)
FineSharp(mode=3, sstr=6.0,  cstr=1.3, xstr=0.0, lstr=1.49, pstr=1.472, ldmp=9.2) ## strong
# It's a generic sharpener. Only for good quality sources!
<br>
# (If the source is crap, FineSharp will happily sharpen the crap.) ;)
# Noise/grain will be enhanced, too. The method is GENERIC.
#
# Modus operandi: A basic nonlinear sharpening method is performed, then the *blurred* sharp-difference gets subtracted again.  
#
# - Didée


function FineSharp(clip c, int "mode", float "sstr", float "cstr", float "xstr", float "lstr", float "pstr", float "ldmp")
== Changelog ==
{
  Version        Date            Changes<br>
   
  2012/04/12      2012/04/12      - Added "ldmp" parameter, and slightly modified the (auto) cstr defaults<br>
mode = default(mode, 1  )  #  1 to 3, weakest to strongest. When negative -1 to -3, a broader kernel for equalisation is used.
  2012/04/08      2012/04/08      - Initial release
sstr  = default(sstr, 2.0 )   # strength of sharpening, 0.0 up to ??
<br>
== External Links ==
_cstr = spline(sstr, 0,0, 0.5,0.1, 1.0,0.6, 2.0,0.9, 2.5,1.00, 3.0,1.09, 3.5,1.15, 4.0,1.19, 8.0,1.249, 255.0,1.5)
* [http://forum.doom9.org/showthread.php?p=1569035 Doom9 Forum] - FineSharp discussion.
_cstr = (mode>0) ? _cstr : pow(_cstr,1./1.25)
* [http://forum.doom9.org/showthread.php?t=171346 Doom9 Forum] - FineSharp AviSynth script ported to MPC-HC Shaders + madVR.
 
<br>
cstr  = default(cstr, _cstr)  #  strength of equalisation, 0.0 to ? 2.0 ? (recomm. 0.5 to 1.25, default AUTO)
<br>
xstr  = default(xstr, 0.19 )  #  strength of XSharpen-style final sharpening, 0.0 to 1.0 (but, better don't go beyond 0.249 ...)
-----------------------------------------------
 
'''Back to [[External_filters#Sharpeners|External Filters]] &larr;'''
                            #  Viscera parameters
lstr  = default(lstr, 1.49 )  #  modifier for non-linear sharpening
pstr  = default(pstr, 1.272)  #  exponent for non-linear sharpening
ldmp  = default(ldmp, sstr+0.1) # "low damp", to not overenhance very small differences (noise coming out of flat areas)
 
str1  = sstr
str2  = cstr
SSTR  = string(sstr)
CSTR  = string(cstr)
LSTR  = string(lstr)
PSTR  = string(pstr)
LDMP  = string(ldmp)
rg=mode>0?11:20
b = (abs(mode)==1) ? c.removegrain(11,-1).removegrain(4,-1)
\ : (abs(mode)==2) ? c.removegrain(4,-1).removegrain(11,-1)
\ : (abs(mode)==3) ? c.removegrain(4,-1).removegrain(11,-1).removegrain(4,-1) : c
shrpD = mt_lutxy(c,b,"x y - abs "+LSTR+" / 1 "+PSTR+" / ^ "+SSTR+" * x y - x y - abs 0.001 + / * x y - 2 ^ x y - 2 ^ "+LDMP+" + / * 128 +")
shrp = (str1<0.01) ? c : c.mt_adddiff(shrpD,U=2,V=2)
 
shrp = (str2<0.01) ? shrp : shrp.mt_makediff(shrpD.mt_lut("x 128 - "+CSTR+" * 128 +").removegrain(rg,-1),U=2,V=2)
 
shrp = (xstr<0.01) ? shrp
\    : mt_lutxy(shrp,shrp.removegrain(20,-1),"x x y - 9.9 * +",U=2,V=2).repair(shrp,12,0).mergeluma(shrp,1.0-xstr)
 
return(shrp)
}
</pre>

Latest revision as of 22:23, 5 October 2017

Abstract
Author Didée
Version 2012/04/12
Download FineSharp.avsi
Category Sharpeners
License
Discussion Doom9 Thread


Description

Small and relatively fast realtime-sharpening function, for 1080p, or after scaling 720p -> 1080p during playback (to make 720p look more like being 1080p).
It's a generic sharpener. Only for good quality sources! (If the source is crap, FineSharp will happily sharpen the crap.) ;) Noise/grain will be enhanced, too. The method is GENERIC.

Modus operandi: A basic nonlinear sharpening method is performed, then the *blurred* sharp-difference gets subtracted again.

Requirements

Required Plugins

Latest versions of the following filters are recommended unless stated otherwise.

Additional planar colorspaces are supported when using AviSynth 2.6, RgTools and appropriate MaskTools2.

Syntax and Parameters

FineSharp (clip c, int "mode", float "sstr", float "cstr", float "xstr", float "lstr", float "pstr", float "ldmp")


clip  c =
Input clip.


int  mode = 1
Range: 1 to 3
1 to 3, weakest to strongest. When negative -1 to -3, a broader kernel for equalization is used.


float  sstr = 2.0
Range: 0.0 up to ??
Strength of sharpening.


float  cstr = AUTO
Range: 0.0 - 2.0 ?
Strength of equalization.
Recommended value: 0.5 to 1.25
If all settings are left at their default value then cstr=0.9


float  xstr = 0.19
Range: 0.0 - 1.0 (but, better don't go beyond 0.249 ...)
Strength of XSharpen-style final sharpening.


float  lstr = 1.49
Modifier for non-linear sharpening.


float  pstr = 1.272
Exponent for non-linear sharpening.


float  ldmp = sstr+0.1
"low damp", to not overenhance very small differences (noise coming out of flat areas).
If sstr is left at its default value (2.0) then ldmp=2.1


Examples

FineSharp with default settings: 

AviSource("Blah.avi")
FineSharp(mode=1, sstr=2.0, cstr=0.9, xstr=0.19, lstr=1.49, pstr=1.272, ldmp=2.1)

More examples: 

FineSharp(mode=2, sstr=2.0,  cstr=1.3, xstr=0.0,  lstr=1.49, pstr=1.472, ldmp=4.2) ## moderate
FineSharp(mode=3, sstr=6.0,  cstr=1.3, xstr=0.0,  lstr=1.49, pstr=1.472, ldmp=9.2) ## strong

Changelog

Version         Date            Changes

2012/04/12      2012/04/12      - Added "ldmp" parameter, and slightly modified the (auto) cstr defaults

2012/04/08      2012/04/08      - Initial release




Back to External Filters ←

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