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 later
• 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!

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)

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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