FineSharp

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

• AviSynth 2.5.8 or greater
• Progressive input only
• Supported color formats: YV12

Required Plugins

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

• MaskTools2
• RemoveGrain and Repair - part of the RemoveGrain v1.0b package.
• RgTools - recommended drop-in replacement for RemoveGrain & Repair!

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

External Links

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

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