Temporal Degrain
| Abstract | |
|---|---|
| Author | Didee, Sagekilla |
| Version | 1.23 |
| Download | TemporalDegrain.avs |
| Category | Denoisers |
| Requirements | * YV12 |
| License | |
| Discussion | |
Contents |
Description
Temporal Degrain is a very slow, multi-stage temporal denoiser originally created for killing the dancing grain present in 300. It works by generating (or having the user specify) a calm search clip with almost no noise to ruin motion vector search. Then, two stages of denoising are done using MDegrain which is limited by our denoised clip. Then, the end result has contra-sharpening applied to sharpen the image to no more than what was present before.
Temporal Degrain works as a simple temporal degraining function that will remove MOST grain from video sources, including dancing grain, like the grain found on 300. Is currently capable of utilizing MVDegrain 1, 2, or 3. Also note, the parameters don't need to be tweaked much as the default settings provide very good denoising. Use of TD is only recommended where highest quality filtering (least grain/noise, and highest detail retained) is needed. Otherwise, Fast Degrain can filter just as well.
Requirements
- AviSynth 2.5.8 or later
- Progressive input only
- Supported color formats: YV12
Required Plugins
- RemoveGrain and Repair (part of the RemoveGrain v1.0b package)
- MaskTools2
- MVTools
- FFT3DFilter or FFT3DGPU
- HQdn3D
Syntax and Parameters
- TemporalDegrain (clip input, clip "denoise", bool "GPU", int "sigma", int "bw", int "bh", int "pel", int "blksize", int "ov", int "degrain", int "limit" int "SAD1", int "SAD2", int "HQ" )
- clip input =
- Input clip.
- clip input =
- clip denoise = null
- Denoised clip for detecting motion vectors. Defining this automatically disables FFT3DFilter.
- clip denoise = null
- bool GPU = false
- True enables GPU based prefiltering.
- bool GPU = false
- int sigma = 16
- FFT3D filtering strength; default works fine in most cases.
- int sigma = 16
- int bw = 16
- FFT3D block width.
- int bw = 16
- int bh = 16
- FFT3D block height.
- int bh = 16
- int blksize = 8
- MAnalyse block size.
- int blksize = 8
- int pel = 2
- MAnalyse subpixel accuracy.
- int pel = 2
- int ov = blksize/2
- MAnalyse block overlap.
- int ov = blksize/2
- int degrain = 2
- MDegrain with 1, 2, or 3 vectors.
- int degrain = 2
- int SAD1 = 400
- MDegrain stage 1 thSAD.
- int SAD1 = 400
- int SAD2 = 300
- MVDegrain stage 2 thSAD.
- int SAD2 = 300
- int HQ = 1
- Adjusts filtering level.
- 0 : disables any prefiltering (not recommended)
- 1 : adds extra prefiltering
- 2 : adds a post processing step to denoising
- Adjusts filtering level.
- int HQ = 1
Examples
# Useful for denoising HD material at decent speeds
Avisource("blah.avi")
TemporalDegrain(degrain=3, ov=4, blksize=16)
# Faster processing than defaults with a manageable decrease in quality.
SetMTMode(2,2)
Avisource("blah.avi"
TemporalDegrain(degrain=1, ov=2, hq=1)
External Links
Download TemporalDegrain.avs Current stable version. (Recommended).
Download TemporalDegrain_beta.avs New beta version featuring a gentle MDegrain limiter.
Download FastDegrain.avs Quick alias for MDegrain(1|2|3) with optional sharpening
Download TemporalDegrain_MT.avsi Alias for MT()'ing TemporalDegrain but using *single-threaded* prefilter clip. Useful when SetMTMode() cannot be used.Thread on doom9 forum
Download TemporalDegrain_ChromaMod.avsi Allows all chroma processing to be disabled for big speed bonus with greyscale sources. Thread on doom9 forum
