Checkmate
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::::Setting this to 0 disables the temporal blending entirely. This may be helpful to reduce temporal artifacts in high motion scenes. | ::::Setting this to 0 disables the temporal blending entirely. This may be helpful to reduce temporal artifacts in high motion scenes. | ||
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| − | ::<span style="color:red">'''Note:'''</span> Official documentation was never released. A valid range | + | ::<span style="color:red">'''Note:'''</span> Official documentation was never released. A valid range is unknown for all parameters. It's probably best to set those values not ''too'' distant from their defaults. |
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Revision as of 17:09, 28 November 2013
| Abstract | |
|---|---|
| Author | mf / prunedtree |
| Version | 2006-03-04 |
| Download | Checkmate |
| Category | Rainbow & Dot Crawl Removal |
| Requirements |
|
| License | Closed source |
| Discussion | |
Contents |
Description
- Spatial and temporal dot crawl reducer. Checkmate is most effective in static or low motion scenes. When using in high motion scenes (or areas) be careful, it's known to cause artifacts with its default values.
Requirements:
- - AviSynth 2.5.8 or later
- - Supported color formats: YV12
Syntax and Parameters
- checkmate(clip, int "thr", int "max", int "tthr2")
- thr int = 12
- Spatial threshold:
- Controls the spatial filter, higher values will blend more but cause artifacts if set to high.
- If set to low, lines in static scenes where dot crawl was reduced will become slightly more blurry.
- Spatial threshold:
- thr int = 12
- max int = 12
- Controls the maximum amount by which a pixel's value may change. Higher values will increase the strength of the filtering but cause artifacts if set to high.
- max int = 12
- tthr2 int = 5
- Temporal threshold:
- Controls the temporal blending; higher values will blend more but cause artifacts if set to high.
- Setting this to 0 disables the temporal blending entirely. This may be helpful to reduce temporal artifacts in high motion scenes.
- Temporal threshold:
- tthr2 int = 5
- Note: Official documentation was never released. A valid range is unknown for all parameters. It's probably best to set those values not too distant from their defaults.
Examples
Checkmate with default values:
AviSource("Blah.avi") checkmate(thr=12, max=12, tthr2=5)
Processing luma with tthr2=0 and chroma with default values. Helps avoid unwanted artifacts in the luma channel (Y).
input = AviSource("Blah.avi") chroma = input.checkmate() luma = input.checkmate(tthr2=0) final = out2.MergeChroma(chroma)
Suggested by scharfis_brain and it's also known as DeCrow()
Links
- Scintilla's Guide - Unofficial documentation
- Doom9 Forum - Archived download.
- VideoHelp - Archived download.
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