FineSharp

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{{FilterCat|External_filters|Adjustment_filters|Sharpeners}}
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{{FilterCat4|External_filters|Scripts|Adjustment_filters|Sharpeners}}
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{{Filter|{{Author/Didee}}|v1.0 - Update 2012/04/12|[http://forum.doom9.org/showthread.php?p=1569035#post1569035 FineSharp]|Sharpeners|
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{{Filter3
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[[YV12]]
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| {{Author/Didée}}
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|}}
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| 2012/04/12
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| [http://avisynth.nl/images/FineSharp.avsi FineSharp.avsi]
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| Sharpeners
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|
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|6=[http://forum.doom9.org/showthread.php?p=1569035 Doom9 Thread]}}
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<br>
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== Description ==
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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>
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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.
  
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== Abstract ==
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Modus operandi: A basic nonlinear sharpening method is performed, then the *blurred* sharp-difference gets subtracted again. <br>
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A quick sharpening filter by Didee for sharpening high quality content, such as Bluray.
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<br>
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== Requirements ==
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* AviSynth 2.5.8 or [http://sourceforge.net/projects/avisynth2/ greater]
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* [[FAQ_different_types_content#How_do_I_recognize_progressive.2C_interlaced.2C_telecined.2C_hybrid_and_blended_content.3F|Progressive]] input only
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* Supported color formats: [[YV12]]
  
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== The script ==
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=== Required Plugins ===
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Located [http://forum.doom9.org/showthread.php?p=1569035#post1569035 here].
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Latest versions of the following filters are recommended unless stated otherwise.<br>
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*[[MaskTools2]]
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*<strike>RemoveGrain and Repair - part of the [[RemoveGrain v1.0b]] package.</strike>
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*[[RgTools]] - recommended drop-in replacement for RemoveGrain & Repair!
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Additional [[planar]] colorspaces are supported when using AviSynth 2.6, RgTools and appropriate MaskTools2.
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<br>
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<br>
  
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And mirrored below in case of disaster (not guarranteed to be up to date, retrieved July 16th, 2012).
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== [[Script variables|Syntax and Parameters]] ==
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:{{Template:FuncDef|FineSharp (''clip'' c, ''int'' "mode", ''float'' "sstr", ''float'' "cstr", ''float'' "xstr", ''float'' "lstr", ''float'' "pstr", ''float'' "ldmp")}}
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<br>
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::{{Par2|c|clip| }}
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::::Input clip.
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<br>
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::{{Par2|mode|int|1}}
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:::Range: 1 to 3
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::::1 to 3, weakest to strongest. When negative -1 to -3, a broader kernel for equalization is used.
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<br>
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::{{Par2|sstr|float|2.0}}
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:::Range: 0.0 up to ??
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::::Strength of sharpening.
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<br>
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::{{Par2|cstr|float|AUTO}}
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:::Range: 0.0 - 2.0 ?<br>
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::::Strength of equalization.
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::::Recommended value: 0.5 to 1.25
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::::If all settings are left at their default value then {{Template:FuncDef|cstr}}=0.9
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<br>
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::{{Par2|xstr|float|0.19}}
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:::Range: 0.0 - 1.0 (but, better don't go beyond 0.249 ...)<br>
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::::Strength of XSharpen-style final sharpening.
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<br>
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::{{Par2|lstr|float|1.49}}
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::::Modifier for non-linear sharpening.
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<br>
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::{{Par2|pstr|float|1.272}}
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::::Exponent for non-linear sharpening.
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<br>
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::{{Par2|ldmp|float|{{Template:FuncDef|sstr}}+0.1}}
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::::"low damp", to not overenhance very small differences (noise coming out of flat areas).
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::::If {{Template:FuncDef|sstr}} is left at its default value (2.0) then {{Template:FuncDef|ldmp}}=2.1
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<br>
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== Examples ==
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FineSharp with default settings:
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[[AviSource]]("Blah.avi")
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FineSharp(mode=1, sstr=2.0, cstr=0.9, xstr=0.19, lstr=1.49, pstr=1.272, ldmp=2.1)
  
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<pre>
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More examples:
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# Small and relatively fast realtime-sharpening function,  
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FineSharp(mode=2, sstr=2.0, cstr=1.3, xstr=0.0,  lstr=1.49, pstr=1.472, ldmp=4.2) ## moderate
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# for 1080p, or after scaling 720p -> 1080p during playback (to make 720p look more like being 1080p)
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FineSharp(mode=3, sstr=6.0, cstr=1.3, xstr=0.0, lstr=1.49, pstr=1.472, ldmp=9.2) ## strong
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# It's a generic sharpener. Only for good quality sources!
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<br>
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# (If the source is crap, FineSharp will happily sharpen the crap.) ;)
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# Noise/grain will be enhanced, too. The method is GENERIC.
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#
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# Modus operandi: A basic nonlinear sharpening method is performed, then the *blurred* sharp-difference gets subtracted again.  
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#
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# - Didée
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function FineSharp(clip c, int "mode", float "sstr", float "cstr", float "xstr", float "lstr", float "pstr", float "ldmp")
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== Changelog ==
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{
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  Version        Date            Changes<br>
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  2012/04/12      2012/04/12      - Added "ldmp" parameter, and slightly modified the (auto) cstr defaults<br>
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mode = default(mode, 1  )  #  1 to 3, weakest to strongest. When negative -1 to -3, a broader kernel for equalisation is used.
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  2012/04/08      2012/04/08      - Initial release
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sstr  = default(sstr, 2.0 )   #  strength of sharpening, 0.0 up to ??
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<br>
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== External Links ==
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_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)
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* [http://forum.doom9.org/showthread.php?p=1569035 Doom9 Forum] - FineSharp discussion.
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_cstr = (mode>0) ? _cstr : pow(_cstr,1./1.25)
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* [http://forum.doom9.org/showthread.php?t=171346 Doom9 Forum] - FineSharp AviSynth script ported to MPC-HC Shaders + madVR.
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<br>
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cstr  = default(cstr, _cstr)  #  strength of equalisation, 0.0 to ? 2.0 ? (recomm. 0.5 to 1.25, default AUTO)
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<br>
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xstr  = default(xstr, 0.19 )  #  strength of XSharpen-style final sharpening, 0.0 to 1.0 (but, better don't go beyond 0.249 ...)
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-----------------------------------------------
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'''Back to [[External_filters#Sharpeners|External Filters]] &larr;'''
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                            #  Viscera parameters
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lstr  = default(lstr, 1.49 )  #  modifier for non-linear sharpening
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pstr  = default(pstr, 1.272)  #  exponent for non-linear sharpening
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ldmp  = default(ldmp, sstr+0.1) # "low damp", to not overenhance very small differences (noise coming out of flat areas)
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str1  = sstr
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str2  = cstr
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SSTR  = string(sstr)
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CSTR  = string(cstr)
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LSTR  = string(lstr)
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PSTR  = string(pstr)
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LDMP  = string(ldmp)
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rg=mode>0?11:20
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b = (abs(mode)==1) ? c.removegrain(11,-1).removegrain(4,-1)
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\ : (abs(mode)==2) ? c.removegrain(4,-1).removegrain(11,-1)
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\ : (abs(mode)==3) ? c.removegrain(4,-1).removegrain(11,-1).removegrain(4,-1) : c
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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 +")
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shrp = (str1<0.01) ? c : c.mt_adddiff(shrpD,U=2,V=2)
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shrp = (str2<0.01) ? shrp : shrp.mt_makediff(shrpD.mt_lut("x 128 - "+CSTR+" * 128 +").removegrain(rg,-1),U=2,V=2)
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shrp = (xstr<0.01) ? shrp
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\    : 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)
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return(shrp)
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}
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</pre>
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Latest revision as of 21:23, 5 October 2017

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


Contents

[edit] 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.

[edit] Requirements

[edit] 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.

[edit] 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


[edit] 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

[edit] 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


[edit] External Links

  • Doom9 Forum - FineSharp discussion.
  • Doom9 Forum - FineSharp AviSynth script ported to MPC-HC Shaders + madVR.



Back to External Filters ←

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