MosquitoNR
From Avisynth wiki
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| − | {{ | + | {{FilterCat4|External_filters|Plugins|Restoration_filters|Deringing & Mosquito Noise}} |
| − | {{ | + | {{Filter3 |
|{{Author/b_inary}} | |{{Author/b_inary}} | ||
|v0.10 | |v0.10 | ||
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|Deringing & Mosquito Noise | |Deringing & Mosquito Noise | ||
|[http://www.gnu.org/licenses/gpl-2.0.txt GPLv2] | |[http://www.gnu.org/licenses/gpl-2.0.txt GPLv2] | ||
| − | |}} | + | |6=[http://forum.doom9.org/showthread.php?t=167582 Doom9 Thread]}} |
== Description == | == Description == | ||
| − | + | MosquitoNR is a noise reduction filter designed for mosquito noise, which is often caused by lossy compression such as MPEG.<br> | |
| − | + | This filter works as follows: | |
| − | + | :1. Compute low frequency components of the image. | |
| − | + | :2. Apply direction-aware blur (smoothing). This blur effectively reduces compression artifacts, but also breaks detail. | |
| − | + | :3. Restore the low frequency components to the blurred image. | |
| − | + | MosquitoNR processes luma only, to correctly process chroma take a look at the [[MosquitoNR#Examples|example]] below.<br> | |
<br> | <br> | ||
== Requirements == | == Requirements == | ||
| − | + | * AviSynth 2.5.8 or [http://forum.doom9.org/showthread.php?t=168764 AviSynth 2.6.0 Alpha5] or greater | |
| − | + | * [[FAQ_different_types_content#How_do_I_recognize_progressive.2C_interlaced.2C_telecined.2C_hybrid_and_blended_content.3F|Progressive]] input only | |
| − | + | * Supported color formats: [[YUY2]], [[YV12]], [[YV16]], [[YV24]], [[YV411]], [[Y8]] | |
| − | + | : <span style="color:red">**</span> If you're using AviSynth 2.5.8, [[YUY2]] and [[YV12]] will be the only colorspaces supported. | |
| − | + | * CPU with [[SSE2]] support | |
<br> | <br> | ||
== [[Script variables|Syntax and Parameters]] == | == [[Script variables|Syntax and Parameters]] == | ||
:{{Template:FuncDef|MosquitoNR (''clip'', ''int'' "strength", ''int'' "restore", ''int'' "radius", ''int'' "threads")}} | :{{Template:FuncDef|MosquitoNR (''clip'', ''int'' "strength", ''int'' "restore", ''int'' "radius", ''int'' "threads")}} | ||
| + | <br> | ||
| + | ::{{Par2| |clip| }} | ||
| + | :::Input clip | ||
<br> | <br> | ||
::{{Par2|strength|int|16}} | ::{{Par2|strength|int|16}} | ||
:::Range: 0 - 32 | :::Range: 0 - 32 | ||
::::Sets the strength of the blur. | ::::Sets the strength of the blur. | ||
| − | + | ::::Setting this value higher brings stronger noise reduction effect, but side effect will also become stronger. | |
<br> | <br> | ||
::{{Par2|restore|int|128}} | ::{{Par2|restore|int|128}} | ||
:::Range: 0 - 128 | :::Range: 0 - 128 | ||
::::Sets the rate of restoring. | ::::Sets the rate of restoring. | ||
| − | + | ::::If set to 0, no restoring is performed. | |
| − | + | ::::If set to 128, low frequency components of the blurred image is completely replaced with those of the original image, and runs slightly faster. | |
<br> | <br> | ||
::{{Par2|radius|int|2}} | ::{{Par2|radius|int|2}} | ||
:::Range: 1 - 2 | :::Range: 1 - 2 | ||
::::Sets the radius of the blur. | ::::Sets the radius of the blur. | ||
| − | + | ::::1 is faster, but will have insufficient effect in some cases. | |
<br> | <br> | ||
::{{Par2|threads|int|0}} | ::{{Par2|threads|int|0}} | ||
:::Range: 0 - 32 | :::Range: 0 - 32 | ||
::::Controls how many threads are used. | ::::Controls how many threads are used. | ||
| − | + | ::::By default, threads is set equal to automatically detected number of processors. | |
| − | + | ::::Since this filter needs a lot of memory access, thread efficiency is not very good. Setting this value lower might improve overall processing speed. | |
<br> | <br> | ||
== Examples == | == Examples == | ||
| Line 81: | Line 84: | ||
| − | == Links == | + | ==Extenal Links == |
*[http://forum.doom9.org/showthread.php?t=167582 Doom9 Forum] - MosquitoNR discussion. | *[http://forum.doom9.org/showthread.php?t=167582 Doom9 Forum] - MosquitoNR discussion. | ||
| − | |||
<br> | <br> | ||
<br> | <br> | ||
----------------------------------------------- | ----------------------------------------------- | ||
'''Back to [[External_filters#Deringing_.26_Mosquito_Noise|External Filters]] ←''' | '''Back to [[External_filters#Deringing_.26_Mosquito_Noise|External Filters]] ←''' | ||
Revision as of 15:31, 20 September 2014
| Abstract | |
|---|---|
| Author | b_inary |
| Version | v0.10 |
| Download | mosquito_nr_avisynth.zip |
| Category | Deringing & Mosquito Noise |
| License | GPLv2 |
| Discussion | Doom9 Thread |
Contents |
Description
MosquitoNR is a noise reduction filter designed for mosquito noise, which is often caused by lossy compression such as MPEG.
This filter works as follows:
- 1. Compute low frequency components of the image.
- 2. Apply direction-aware blur (smoothing). This blur effectively reduces compression artifacts, but also breaks detail.
- 3. Restore the low frequency components to the blurred image.
MosquitoNR processes luma only, to correctly process chroma take a look at the example below.
Requirements
- AviSynth 2.5.8 or AviSynth 2.6.0 Alpha5 or greater
- Progressive input only
- Supported color formats: YUY2, YV12, YV16, YV24, YV411, Y8
- CPU with SSE2 support
Syntax and Parameters
- MosquitoNR (clip, int "strength", int "restore", int "radius", int "threads")
- clip =
- Input clip
- clip =
- int strength = 16
- Range: 0 - 32
- Sets the strength of the blur.
- Setting this value higher brings stronger noise reduction effect, but side effect will also become stronger.
- Range: 0 - 32
- int strength = 16
- int restore = 128
- Range: 0 - 128
- Sets the rate of restoring.
- If set to 0, no restoring is performed.
- If set to 128, low frequency components of the blurred image is completely replaced with those of the original image, and runs slightly faster.
- Range: 0 - 128
- int restore = 128
- int radius = 2
- Range: 1 - 2
- Sets the radius of the blur.
- 1 is faster, but will have insufficient effect in some cases.
- Range: 1 - 2
- int radius = 2
- int threads = 0
- Range: 0 - 32
- Controls how many threads are used.
- By default, threads is set equal to automatically detected number of processors.
- Since this filter needs a lot of memory access, thread efficiency is not very good. Setting this value lower might improve overall processing speed.
- Range: 0 - 32
- int threads = 0
Examples
MosquitoNR with default settings:
AviSource("Blah.avi") MosquitoNR(strength=16, restore=128, radius=2, threads=0)
MosquitoNR processes only luma.
If you want to process chroma too, you can write a script like the following, but there might be no noticeable change.
AviSource("Blah.avi") MosquitoNR() u = UtoY().MosquitoNR() # In AviSynth 2.6, UtoY8() may be faster v = VtoY().MosquitoNR() YtoUV(u, v, last)
Changelog
Version Date Changes
v0.10 2013/03/14 - fixed a crash with AviSynth MT - added support for YV16, YV24, Y411, Y8 - some speed optimizations - added English documentation
v120210 2012/02/10 - initial release
Acknowledgments
This filter is a combination of flash3kyuu's AviUtl plugin "smoothing filter" and nilpo's AviUtl plugin "low frequency components protection filter".
This combination was proposed by POP@4bit. I thank all of them very much.
- flash3kyuu's web page (Japanese): http://www.geocities.jp/flash3kyuu/
- nilpo's web page (Japanese): http://nilposoft.info/aviutl-plugin/
- POP@4bit's web page (Japanese): http://pop.4-bit.jp/?p=3362
Extenal Links
- Doom9 Forum - MosquitoNR discussion.
Back to External Filters ←
