Bifrost v1.1 - Revision history

Reel.Deal: minor formatting

2014-09-20T17:02:18Z

minor formatting

Reel.Deal at 01:08, 13 January 2014

2014-01-13T01:08:04Z

Reel.Deal at 02:55, 28 November 2013

2013-11-28T02:55:28Z

Reel.Deal: /* Links */

2013-11-25T19:03:51Z

‎Links

Reel.Deal at 05:07, 19 November 2013

2013-11-19T05:07:56Z

Reel.Deal: Created page with "{{FilterCat|External_filters|Restoration_filters|Rainbow & Dot Crawl Removal}} {{Filter | {{Author/Myrsloik}} | v1.1 | [http://ivtc.org/avisynth/bifrost-1.1.zip Bifrost] | Ra..."

2013-11-19T04:58:38Z

Created page with "{{FilterCat|External_filters|Restoration_filters|Rainbow & Dot Crawl Removal}} {{Filter | {{Author/Myrsloik}} | v1.1 | [http://ivtc.org/avisynth/bifrost-1.1.zip Bifrost] | Ra..."

New page

{{FilterCat|External_filters|Restoration_filters|Rainbow & Dot Crawl Removal}}
{{Filter
| {{Author/Myrsloik}}
| v1.1
| [http://ivtc.org/avisynth/bifrost-1.1.zip Bifrost]
| Rainbow & Dot Crawl Removal
|
* YV12
| Closed source
|}}
 
== Description ==
:Bifrost is a temporal derainbower for avisynth that works in the YV12 colorspace and is intended for region 1 anime DVDs (hasn't been tested with anything else).
:The advantage of a temporal derainbower is that it can actually recover detail and doesn't just smooth the image and cause color bleeding.
:The bad part is that it's only possible to process static parts of the image which is why an alternative derainbowing method can be used with the altclip parameter.
:The most similar filter is probably the temporal processing part of the [http://home.earthlink.net/~tacosalad/video/dotcrawl.html DotCrawl] VirtualDub filter but with considerably less checks for artifacts
==== Requirements: ====
:- AviSynth 2.5.8 or later
:- Supported color formats: [[YV12]]
 

== Syntax and Parameters ==
:{{Template:FuncDef|Bifrost(clip, clip "altclip", float "scenelumathresh", int "variation", bool "conservativemask", bool "interlaced")}}
 
::{{Par|altclip|clip|}}
:::Altclip is the clip to return frames from when scenelumathresh is passed. This allows rainbows to be removed even in high motion scenes with other processing.
:::Returns the first clip if none is specified.
 
::{{Par|scenelumathresh|float|3.0}}
:::Scenelumathresh is how much every pixel in the frame/field may change on average and still be processed.
 
::{{Par|variation|int|5}}
:::Variation determines how much the chroma must change for it to be considered a rainbow. Increasing it decreases false detection in some cases.
 
::{{Par|conservativemask|bool|false}}
:::Conservativemask determines if the area around pixels that are considered rainbows also are processed. Can reduce miscoloring a little when there's both movement and rainbows.
 
::{{Par|interlaced|bool|true}}
:::Interlaced changes between field based and frame based decisions for scenelumathresh and is equivalent to using [[SeparateFields]] and [[Weave]].
 

== Rainbow Types ==
:When dealing with telecined material you first have to determine if the rainbows were added before or after it was telecined.
:To do this use SeparateFields().SelectOdd() on the source. Find a frame with lots of rainbowing and see if they change every frame or if there's a duplicate every 5 frames.
:If you find duplicates it's type 2 rainbows and you have to perform perfect IVTC in YATTA and force the right pattern over the entire source clip and then finally use "Decimation by pattern" in the project to finish it.
:If you find no duplicates (type 1) the process is much simpler and you just put Bifrost() right after the source
 
====Type 1:====
Mpeg2source("fruits_basket_r1.d2v")
Bifrost()
Telecide(order=1)
Decimate()
=====Type 1 using altclip and [[SSIQ]]:=====
Mpeg2source("gsc_r1.d2v")
Bifrost(scenelumathresh=1.5,altclip=SSIQ(11,100,true),interlaced=true)
Telecide(order=1)
Decimate()
 
====Type 2:====
Using Bifrost multiple times on type 2 rainbows can improve the results.
Mpeg2source("trigun_r1.d2v")
Telecide(order=1,ovr="trigun.tel.txt")
Decimate(ovr="trigun.dec.txt")
Bifrost(interlaced=false)
=====Type 2 using altclip and [[SSIQ]]:=====
Mpeg2source("bgc_r1.d2v")
Telecide(order=1,ovr="bgc.tel.txt")
Decimate(ovr="bgc.dec.txt")
Bifrost(scenelumathresh=2,altclip=SSIQ(11,300,false),interlaced=false)
 
== Changelog ==
Version 1.1
- Corrected several bad assumptions about pitch and no longer requests frames out of range which makes it compatible with avisynth 2.5.7.
- Uses the whole image and not just the upper half to determine if there is too much motion, this reduces artifacts greatly in certain clips but the
scenelumathresh argument now has to be twice as big as in previous versions for the same effect.
- Processes the image borders properly instead of just ignoring them.
- Can look two frames in either direction instead of just one frame in both. This makes it possible to remove rainbows in frames right before and after scenechanges.

 

== Links ==
:[http://forum.doom9.org/showthread.php?t=74364 Doom9 Forum] - Original post by Myrsloik.
:[http://forum.doom9.org/showthread.php?t=74397 Doom9 Forum] - Discussion about Bifrost v0.9.

@@ Line 10: / Line 10: @@
 |}}
 <br>
-'''Back to [[Bifrost|Bifrost v2.0]]'''
+'''Back to [[Bifrost|Bifrost v2.0]] &larr;'''
 == Description ==
 :Bifrost is a temporal derainbower for avisynth that works in the YV12 colorspace and is intended for region 1 anime DVDs (hasn't been tested with anything else).
@@ Line 83: / Line 83: @@
 *[http://forum.doom9.org/showthread.php?t=74397 Doom9 Forum] - Discussion about Bifrost v0.9.
 <br>
-'''Back to [[Bifrost|Bifrost v2.0]]'''
+'''Back to [[Bifrost|Bifrost v2.0]] &larr;'''

@@ Line 80: / Line 80: @@
 <br>
 == Links ==
-:[http://forum.doom9.org/showthread.php?t=74364 Doom9 Forum] - Original post by Myrsloik.
+*[http://forum.doom9.org/showthread.php?t=74364 Doom9 Forum] - Original post by Myrsloik.
-:[http://forum.doom9.org/showthread.php?t=74397 Doom9 Forum] - Discussion about Bifrost v0.9.
+*[http://forum.doom9.org/showthread.php?t=74397 Doom9 Forum] - Discussion about Bifrost v0.9.
 <br>
 '''Back to [[Bifrost|Bifrost v2.0]]'''

@@ Line 1: / Line 1: @@
-{{FilterCat|External_filters|Restoration_filters|Rainbow & Dot Crawl Removal}}
+{{FilterCat4|External_filters|Plugins|Restoration_filters|Rainbow & Dot Crawl Removal}}
-{{Filter
+{{Filter3
 | {{Author/Myrsloik}}
 | v1.1
 | [http://ivtc.org/avisynth/bifrost-1.1.zip bifrost-1.1.zip]
 | Rainbow & Dot Crawl Removal
 | Closed source
 |}}
@@ Line 12: / Line 10: @@
 '''Back to [[Bifrost|Bifrost v2.0]] &larr;'''
 == Description ==
-:Bifrost is a temporal derainbower for avisynth that works in the YV12 colorspace and is intended for region 1 anime DVDs (hasn't been tested with anything else).
+Bifrost is a temporal derainbower for avisynth that works in the [[YV12]] colorspace and is intended for region 1 anime DVDs (hasn't been tested with anything else). The advantage of a temporal derainbower is that it can actually recover detail and doesn't just smooth the image and cause color bleeding. The bad part is that it's only possible to process static parts of the image which is why an alternative derainbowing method can be used with the altclip parameter. The most similar filter is probably the temporal processing part of the [http://home.earthlink.net/~tacosalad/video/dotcrawl.html DotCrawl] VirtualDub filter but with considerably less checks for artifacts.<br>
-:The advantage of a temporal derainbower is that it can actually recover detail and doesn't just smooth the image and cause color bleeding.
-:The bad part is that it's only possible to process static parts of the image which is why an alternative derainbowing method can be used with the altclip parameter.
-:The most similar filter is probably the temporal processing part of the [http://home.earthlink.net/~tacosalad/video/dotcrawl.html DotCrawl] VirtualDub filter but with considerably less checks for artifacts
 <br>
-== Requirements: ==
+== Requirements ==
-:- AviSynth 2.5.8 or later
+* AviSynth 2.5.8 or later
-:- Supported color formats: [[YV12]]
+* Supported color formats: [[YV12]]
 <br>
-== Syntax and Parameters ==
+== [[Script variables|Syntax and Parameters]] ==
 :{{Template:FuncDef|Bifrost(''clip'', ''clip'' "altclip", ''float'' "scenelumathresh", ''int'' "variation", ''bool'' "conservativemask", ''bool'' "interlaced")}}
 <br>
 ::{{Par2|altclip|clip| }}
@@ Line 42: / Line 40: @@
 == Rainbow Types ==
-:When dealing with telecined material you first have to determine if the rainbows were added before or after it was telecined.
+When dealing with telecined material you first have to determine if the rainbows were added before or after it was telecined. To do this use [[SeparateFields]]().[[SelectOdd]]() on the source. Find a frame with lots of rainbowing and see if they change every frame or if there's a duplicate every 5 frames. If you find duplicates it's type 2 rainbows and you have to perform perfect IVTC in [http://code.google.com/p/yatta-ivtc/ YATTA] and force the right pattern over the entire source clip and then finally use "Decimation by pattern" in the project to finish it. If you find no duplicates (type 1) the process is much simpler and you just put <tt>Bifrost()</tt> right after the source
-:To do this use SeparateFields().SelectOdd() on the source. Find a frame with lots of rainbowing and see if they change every frame or if there's a duplicate every 5 frames.
-:If you find duplicates it's type 2 rainbows and you have to perform perfect IVTC in YATTA and force the right pattern over the entire source clip and then finally use "Decimation by pattern" in the project to finish it.
-:If you find no duplicates (type 1) the process is much simpler and you just put Bifrost() right after the source
 <br>
 ====Type 1:====
@@ Line 70: / Line 65: @@
   Bifrost(scenelumathresh=2,altclip=SSIQ(11,300,false),interlaced=false)
 <br>
 == Changelog ==
   Version      Date            Developer       Changes<br>
@@ Line 84: / Line 78: @@
                                                  scenechanges.
 <br>
-== Links ==
+==External Links ==
 *[http://forum.doom9.org/showthread.php?t=74364 Doom9 Forum] - Original post by Myrsloik.
 *[http://forum.doom9.org/showthread.php?t=74397 Doom9 Forum] - Discussion about Bifrost v0.9.
 <br>
 '''Back to [[Bifrost|Bifrost v2.0]] &larr;'''

@@ Line 3: / Line 3: @@
 | {{Author/Myrsloik}}
 | v1.1
-| [http://ivtc.org/avisynth/bifrost-1.1.zip Bifrost]
+| [http://ivtc.org/avisynth/bifrost-1.1.zip bifrost-1.1.zip]
 | Rainbow & Dot Crawl Removal
+|
@@ Line 16: / Line 16: @@
 :The bad part is that it's only possible to process static parts of the image which is why an alternative derainbowing method can be used with the altclip parameter.
 :The most similar filter is probably the temporal processing part of the [http://home.earthlink.net/~tacosalad/video/dotcrawl.html DotCrawl] VirtualDub filter but with considerably less checks for artifacts
-==== Requirements: ====
+<br>
 :- AviSynth 2.5.8 or later
 :- Supported color formats: [[YV12]]
 <br>
 == Syntax and Parameters ==
-:{{Template:FuncDef|Bifrost(clip, clip "altclip", float "scenelumathresh", int "variation", bool "conservativemask", bool "interlaced")}}
+:{{Template:FuncDef|Bifrost(''clip'', ''clip'' "altclip", ''float'' "scenelumathresh", ''int'' "variation", ''bool'' "conservativemask", ''bool'' "interlaced")}}
 <br>
-::{{Par|altclip|clip|}}
+::{{Par2|altclip|clip| }}
 :::Altclip is the clip to return frames from when scenelumathresh is passed. This allows rainbows to be removed even in high motion scenes with other processing.
 :::Returns the first clip if none is specified.
 <br>
-::{{Par|scenelumathresh|float|3.0}}
+::{{Par2|scenelumathresh|float|3.0}}
 :::Scenelumathresh is how much every pixel in the frame/field may change on average and still be processed.
 <br>
-::{{Par|variation|int|5}}
+::{{Par2|variation|int|5}}
 :::Variation determines how much the chroma must change for it to be considered a rainbow. Increasing it decreases false detection in some cases.
 <br>
-::{{Par|conservativemask|bool|false}}
+::{{Par2|conservativemask|bool|false}}
 :::Conservativemask determines if the area around pixels that are considered rainbows also are processed. Can reduce miscoloring a little when there's both movement and rainbows.
 <br>
-::{{Par|interlaced|bool|true}}
+::{{Par2|interlaced|bool|true}}
 :::Interlaced changes between field based and frame based decisions for scenelumathresh and is equivalent to using [[SeparateFields]] and [[Weave]].
 <br>
@@ Line 71: / Line 71: @@
 <br>
 == Changelog ==
-   Version 1.1
+== Changelog ==
-       - Corrected several bad assumptions about pitch and no longer requests frames out of range which makes it compatible with avisynth 2.5.7.
+ Version      Date            Developer       Changes<br>
-      - Uses the whole image and not just the upper half to determine if there is too much motion, this reduces artifacts greatly in certain clips but the
+ [http://ivtc.org/avisynth/bifrost-1.1.zip v1.1]       2007/03/04      Myrsoik         - Corrected several bad assumptions about pitch and no longer requests
-        scenelumathresh argument now has to be twice as big as in previous versions for the same effect.
+                                                frames out of range which makes it compatible with avisynth 2.5.7.
-      - Processes the image borders properly instead of just ignoring them.
+                                              - Uses the whole image and not just the upper half to determine if there
-      - Can look two frames in either direction instead of just one frame in both. This makes it possible to remove rainbows in frames right before and after scenechanges.
+                                                is too much motion, this reduces artifacts greatly in certain clips but
+                                                the scenelumathresh argument now has to be twice as big as in previous
 <br>
 == Links ==