VariableBlur

Latest revision as of 00:53, 13 June 2020

[edit] Description

VariableBlur is a Gaussian, binomial or average blur filter with a variable radius (variance). Also includes an unsharp mask filter based on the Gaussian filter meaning it is fast for big variance.
The binomial filter part is based on a paper by Frederick M. Waltz and John W. V. Miller. An Efficient Algorithm for Gaussian Blur Using Finite-state Machines. SPIE Conf. on Machine Vision Systems for Inspection and Metrology VII page 3521-37

[edit] Requirements

• [x86]: AviSynth+ or AviSynth 2.6
• [x64]: AviSynth+
• Supported color formats: RGB24, RGB32, YUY2, YV12

• SSE2 capable CPU (GaussianBlur function only)

[edit] Runtime dependencies

The following are required, VariableBlur will not run or load without them.

• FFTW 3.3.5 (fftw-3.3.5-dll32.zip or fftw-3.3.5-dll64.zip)

*** 32-bit libfftw3f-3.dll needs to be in the search path (C:\Windows\SysWOW64 64-bit OS or C:\windows\system32 32-bit OS)

*** 64-bit libfftw3f-3.dll needs to be in the search path (C:\windows\system32 64-bit OS)

[edit] Filters

[edit] Changelog

Version        Date            Changes

v0.7(x86/x64)  2019/04/06      - Changes by Asd-g
                               - Update to AviSynth 2.6 api
                               - x64 version: used the original source code and just replaced 32-bit registers with 64-bit registers
                               - Compiled Intel XE 2019 compiler, includes x86 and x64 plugins

v0.7           2012/05/24      - Fix integrate=true giving incorrect results due to lack of precision in weight 
                                 calculation. Integrate=true now gives results much closer to integrate=false, as
                                 would be expected.
                               - Add support for YUY2, RGB24, and RGB32 input to GaussianBlur/Unsharp
                               - Compiled with MSVC++ 2010, requires the corresponding Redistributable Package (x86).
                                 Required due to OpenMP multithreading (vcomp100.dll).

v0.6           2012/05/22      - Fix border=3 bug for gfunc/gfuncc >= 0 (gamma processing was not done on border values)
                               - Make radius for GaussianBlur 4*std instead of 3*std
                               - Add border=4 (mirroring) option to gaussianblur and make it the default
                               - Dynamically load FFTW (libfftwf3-3.dll) instead of statically linking to old .lib
                               - Multithread GaussianBlur using OpenMP and use FFTW multithreaded plans
                               - SSE/SSE2 optimizations. GaussianBlur now requires SSE2 capable CPU.

v0.5           2011/03/14      - Add gfunc/gfuncc/pcr/pcrc parameters to GaussianBlur/unsharp  (tritical)

v0.4+          2008/08/30      - Memory leak fix by Neuron2

v0.4           2005/05/24      - Fixed bug with converting float to unsigned char without proper clamping.
                                 Also included an sharp filter and optional integrated Gaussian coefficients.
v0.3           2005/05/06      - GaussianBlur is included, old Gaussian is renamed to BinomialBlur.

v0.2           2005/01/24      - optimization of the Gaussian blur (now uses a 5x5 mask instead of 3x3) and the 
                                 average blur(smarter algorithm resulting in a factor 20 to 100 speed increase)

v0.1           2005/01/19      - Initial release

[edit] Archived Downloads

• v0.5 x64 version was compiled by yo4kazu. Main download includes binary and source. This version is outdated, only here for reference.

[edit] External Links

• Doom9 Forum - VariableBlur discussion.
• An Efficient Algorithm for Gaussian Blur Using Finite-state Machines

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