Neo FFT3D
| Abstract | |
|---|---|
| Author | MeteorRain |
| Version | r11 |
| Download | NeoFFT3D_r11.zip |
| Category | Denoisers |
| License | GPLv2 |
| Discussion | Doom9 Forum |
Contents |
Description
FFT3DFilter is a 3D Frequency Domain filter - strong denoiser and moderate sharpener. It was originally written by Alexander G. Balakhnin aka Fizick, and later modified by martin53 for AviSynth 2.6 and later modified by Ferenc Pintér aka pinterf for further improvement, high bit depth, and more. Kudos to them for creating and improving this fantastic tool.
In this project, legacy format like YUY2 has been removed, legacy parameter like multiplane has been removed, and SIMD code has been completely re-written for all core parts of the code. Due to API change, the project has been renamed from FFT3DFilter to neo_FFT3D to avoid confusion. SSE is required to run optimized routine. AVX and AVX512 routine is also available.
Requirements
- [x86]: AviSynth+ or AviSynth 2.6.0
- [x64]: AviSynth+
- Supported color formats: Y8, YV12, YV16, YV24, YV411
- AviSynth+: All planar formats (8/10/12/14/16/32-bit, Y, YUV(A), and RGB(A) with or without alpha) are supported.
Runtime dependencies
The following are required, neo_fft3d will not run or load without them.
- FFTW 3.3.5 (
fftw-3.3.5-dll32.ziporfftw-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)
Syntax and Parameters
neo_fft3d (clip, float "sigma", float "beta", int "bw", int "bh", int "bt", int "ow", int "oh", float "kratio", float "sharpen", float "scutoff", float "svr", float "smin", float "smax", bool "measure", bool "interlaced", int "wintype", int "pframe", int "px", int "py", bool "pshow", float "pcutoff", float "pfactor", float "sigma2", float "sigma3", float "sigma4", float "degrid", float "dehalo", float "hr", float "ht", int "y", int "u", int "v", int "l", int "t", int "r", int "b", int "opt", int "ncpu", bool "mt")
- clip =
- Input clip
- clip =
- float sigma = 2.0
- Given noise value for all (or highest) frequencies. Only values greater that 0.0
- float sigma = 2.0
- float beta = 1.0
- Noise margin (float>=1.0, default=1.0 for no noise left): control noise amount left in the restoration for Wiener filter, so max filter noise attenuation =
(beta-1)/beta.
- Noise margin (float>=1.0, default=1.0 for no noise left): control noise amount left in the restoration for Wiener filter, so max filter noise attenuation =
- float beta = 1.0
- int bw = 48
- int bh = 48
- Block width and height.
- int bw = 48
- int bt = 3
- Block temporal size, number of frames.
- 0 : all previous frames (switch Kalman filter mode)
- 1 : only current frame (spatial 2D Wiener filter)
- 2 : previous and current frame (3D Wiener filter)
- 3 : previous, current and next frame (3D Wiener filter)
- 4 : two previous, current and next frame (3D Wiener filter)
- 5 : two previous, current and two next frames (3D Wiener filter)
- -1 : sharpen only (2D)
- Block temporal size, number of frames.
- int bt = 3
- int ow = bw/3
- int oh = bh/3
- Overlap width and height.
- int ow = bw/3
- float kratio = 2.0
- Ratio of threshold to sigma to reset Kalman filter. Variation threshold =
sigma*kratio, good value is about from 1.5 to 3.0
- Ratio of threshold to sigma to reset Kalman filter. Variation threshold =
- float kratio = 2.0
- float sharpen = 0.0
- Sharpening strength (default=0 - do not sharpen). Good values are about 0.3 to 1.0 (negative values results in reverse effect)
- float sharpen = 0.0
- float scutoff = 0.3
- Sharpening cutoff frequency, relative to max.
- float scutoff = 0.3
- float svr = 1.0
- Sharpening (and dehalo) vertical ratio (to horizontal) (default=1.0 - same as horizontal, 0 - no vertical sharpening)
- float svr = 1.0
- float smin = 4.0
- float smin = 20.0
- Minimum and maximum limit (approximate noise margin) for sharpening stage.
- float smin = 4.0
- bool measure = true
- Select the most optimal (fastest) FFT method by speed measure (with longer init stage) instead of simple estimation.
- bool measure = true
- bool interlaced = false
- Separate fields processing.
- bool interlaced = false
- int wintype = 0
- weighting windows type:
- 0 : same analysis and synthesis half-cosine window, used in all versions before 1.4.
- 1 : intermediate between 0 and 2
- 2 : flat analysis window, rised cosine (Hanning) synthesis window.
- weighting windows type:
- int wintype = 0
- bool pframe = false
- Noise pattern frame number.
- bool pframe = false
- int px = 0
- int py = 0
- Noise pattern block horizontal X position and vertical Y position. If
px=py=0, then the pattern block is defined automatically with minimal power spectral density.
- Noise pattern block horizontal X position and vertical Y position. If
- int px = 0
- bool pshow = false
- Show noise pattern block and its properties.
- bool pshow = false
- float pcutoff = 0.1
- Noise pattern cutoff frequency (relative to max).
- float pcutoff = 0.1
- float pfactor = 0.0
- Noise pattern denoise strength (0 to 1.0, default=0, this method disabled).
- float pfactor = 0.0
- float singma2 = sigma
- float singma3 = sigma
- float singma4 = sigma
- Given noise value at second, third, and lowest scale level frequencies. Only values greater that 0.0
- float singma2 = sigma
- float degrid = 1.0
- Weighting window compensation degree for grid decreasing. Only values greater that 0.0
- float degrid = 1.0
- float dehalo = 0.0
- Halo removal strength. Only values greater that 0.0
- float dehalo = 0.0
- float hr = 2.0
- Halo approximate radius. Only values greater that 0.0
- float hr = 2.0
- float ht = 50.0
- Halo approximate threshold. Only values greater that 0.0
- float ht = 50.0
- int y = 3
- int u = 3
- int v = 3
- Whether a plane is to be filtered.
- 1 - Do not touch, leaving garbage data
- 2 - Copy from origin
- 3 - Process
- Whether a plane is to be filtered.
- int y = 3
- int l = 0
- int t = 0
- int r = 0
- int b = 0
- Exclude part of image to be filtered.
- Non-filtered part is copied from the source.
- int l = 0
- int opt = 0
- Sets which CPU optimizations to use.
- <0 - Auto detect
- 0 - Auto detect with AVX512 disabled
- 1 - Use C
- 2 - Use up to SSE
- 3 - Use up to AVX
- 4 - Use up to AVX512
- Sets which CPU optimizations to use.
- int opt = 0
- int ncpu = 2
- Number of FFTW multi threads.
- int ncpu = 2
- bool mt = false
mt = falsedisables plane based multi-threading (default).
- bool mt = false
Examples
To sharpen only:
AviSource("blah.avi")
neo_fft3d(bt=-1, sharpen=0.7)
To denoise and slightly sharpen the interlaced clip:
neo_fft3d(sigma=2, sharpen=0.3, interlaced=true)
Some "best settings", slower processing:
neo_fft3d(sigma=1.5, bt=5, bw=32, bh=32, ow=16, oh=16, sharpen=0.4)
To denoise all color planes (both luma and chroma):
neo_fft3d(sigma=2, y=3, u=3, v=3) # same as neo_fft3d(sigma=2)
To denoise luma and chroma with different settings:
neo_fft3d(sigma=1.5, y=3, u=2, v=2) neo_fft3d(sigma=3.0, y=2, u=3, v=3)
To decrease the existing horizontal halo only:
neo_fft3d(bt=-1, dehalo=1.0, hr=2.0, ht=50, svr=0, y=3, u=2, v=2)
Changelog
See GitHub releases page.
External Links
- GitHub - Source code repository
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