LUTDeRainbow
From Avisynth wiki
Abstract | |
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Author | Scintilla |
Version | 10/3/08 |
Download | LUTDeRainbow-20081003.avsi |
Category | Rainbow & Dot Crawl Removal |
License | |
Discussion |
Contents |
Description
LUTDeRainbow, a derainbowing script by Scintilla.
Requirements
- AviSynth 2.5.8 or greater
- Supported color formats: YV12
- Progressive input only
Required Plugins
Syntax and Parameters
- LUTDeRainbow(clip input, float "cthresh", float "ythresh", bool "y", bool "linkUV", bool "mask")
- clip input =
- Input clip.
- clip input =
- float cthresh = 10.0
- This determines how close the chroma values of the pixel in the previous and next frames have to be for the pixel to be hit.
- Higher values (within reason) should catch more rainbows, but may introduce unwanted artifacts. Probably shouldn't be set above 20 or so.
- float cthresh = 10.0
- float ythresh = 10.0
- If the y parameter is set true, then this determines how close the luma values of the pixel in the previous and next frames have to be for the pixel to be hit. Just as with cthresh.
- float ythresh = 10.0
- bool y = true
- Determines whether luma difference will be considered n determining which pixels to hit and which to leave alone.
- bool y = true
- bool linkUV = true
- Determines whether both chroma channels are considered in determining which pixels in each channel to hit.
- When set true, only pixels that meet the thresholds for both U and V will be hit.
- When set false, the U and V channels are masked separately (so a pixel could have its U hit but not its V, or vice versa).
- bool linkUV = true
- bool mask = false
- When set true, the function will return the mask (for combined U/V) instead of the image. Formerly used to find the best values of cthresh and ythresh.
- If linkUV=false, then this mask won't actually be used anyway (because each chroma channel will have its own mask).
- bool mask = false
Examples
LUTDeRainbow with default settings:
AviSource("Blah.avi") LUTDeRainbow(cthresh=10.0, ythresh=10.0, y=true, linkUV=true, mask=false)
Changelog
10/3/08: - Fixed "cthresh" typos in documentation; killed repmode since I realized I wasn't using Repair anymore; finally upgraded to MaskTools 2.
9/2/05: - Suddenly realized this wouldn't work for YUY2 and made it YV12 only; added linkUV option, to decide whether to use a separate mask for each chroma channel or use the same one for both.
7/1/05: - Added Y option, to take luma into account when deciding whether to use the averaged chroma; added ythresh and cthresh parameters, to determine how close the chroma/luma values of a pixel have to be to be considered the same (y=true is meant to cut down on artifacts)
6/24/05: - Replaced whole mask mechanism; new mask checks to see that BOTH channels of the chroma are within the threshold from previous frame to next
6/23/05: - Is this thing on?
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