Frfun7

Revision as of 13:20, 10 September 2021

Description

frfun7 is a spatial fractal denoising plugin made by Marc Fauconneau in 2002 and later maintained by Ferenc Pintér.

Requirements

• [x86]: AviSynth+ or AviSynth 2.5.8 or greater
• Progressive input only
• Supported color formats: YV12

Syntax and Parameters

frfun7 (clip, float "lambda",float "T", float "Tuv", int "P", int "TP", int "R1")

clip   =

Input clip.

float  lambda = 1.1

Adjust the power of the local denoising.

float  T = 6.0

Limits the max luma denoising power for edges; 0 disables processing.

float  Tuv = 2.0

Limits the max chroma denoising power for edges; 0 disables processing.

int  P = 0

it's a "speed -vs- quality" trade off setting.

• 0 : faster but slightly lower quality than frfun7_rev6 (may create minor artifacts around line edges).
• 1 : adaptive overlapping (see also TP1). slower than frfun7_rev6 but the quality is a little bit better.
• 2 : temporal
• 4 : adaptive radius

Internally the parameter is treated as a bit mask but probably it has no point.

Parameter is available since frfun7 2013.

int  TP1 = 0

A threshold which affects P=1 (adaptive overlapping).

Introduced as a separate parameter in r0.7test. This value had to be encoded into P as TP1*1000 previously.

0 will always run into a final filtering part, the bigger it is, probably the more pixels it will skip. (?)

int  R1 = 3

Radius for first pass of the internal algorithm.

First pass in pre v0.7 was fixed to 3 (and was no separate parameter)

Valid values are 2 or 3.

Examples

frfun7 with default settings:

AviSource("Blah.avi")
frfun7(lambda=1.1, T=6.0, Tuv=2.0, P=0, TP1=0, R1=3)

Changelog

Version         Date            Changes

2021            2021/09/10      - Code refresh and additions by pinterf
                                - Source to VS2019 solution
                                - Add/guess missing source parts, rename files
                                - Update AviSynth headers
                                - Add version resource
                                - Avisynth V2.6 style plugin
                                - Implement all mmx inline assembler as SIMD intrinsics
                                - x64 build
                                - fix some rounding and other issue
                                - re-enable T=0, Tuv=0 cases (unprocessed plane copy)
                                - add experimental TP1 (default 0) a threshold for P=1 (temporal overlapping) mode
                                - add experimental R1 (default 3, can be set to 2) first pass radius
                                
2013            2013/09/04      - no longer buffers the input; yields a nice speed increase.
                                - "P" parameter added

rev6            2006/05/10      - bug fixes
                                - remove mod8 restriction
                                - process first and last frame

rev1            2006/05/05      - initial release

Archived Downloads

External Links

• Doom9 Forum - frfun7_rev6 discussion.
  
• Doom9 Forum - frfun7 2013 discussion.
  
• Doom9 Forum - frfun7 2021 discussion.
  

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