FixLuminance - Revision history

Reel.Deal: add link to avs+ documentation

2022-09-18T05:31:52Z

add link to avs+ documentation

Admin at 15:37, 24 June 2016

2016-06-24T15:37:19Z

Raffriff42: note: deprecated

2016-01-25T00:53:10Z

note: deprecated

Raffriff42: Examples w/ images

2016-01-17T01:51:39Z

Examples w/ images

Raffriff42: formatting, links, phrasing

2016-01-16T23:49:48Z

formatting, links, phrasing

Raffriff42: added category

2015-11-08T14:42:33Z

added category

Admin: 1 revision

2013-05-09T15:02:26Z

1 revision

Wilbert at 20:54, 30 March 2006

2006-03-30T20:54:11Z

New page

{{Template:FuncDef|FixLuminance(clip ''clip'', int ''intercept'', int ''slope'')}}

My VCR has the annoying habit of making the top of each frame brighter than the bottom. The purpose of this filter is to progressively darken the top of the image to compensate for this. If you've noticed a similar problem with your VCR, email me and I'll finish this explanation of how the filter works. Otherwise, you can pretend it doesn't exist.

This filter works only with YUY2 input.

[[Category:Internal filters]]

← Older revision		Revision as of 05:31, 18 September 2022
Line 1:		Line 1:
		+	<div {{BlueBox2\|40\|0\|3px solid purple}} >
		+	{{AvsPlusFullname}}<br>
		+	Up-to-date documentation: [https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/corefilters/fixluminance.html https://avisynthplus.readthedocs.io]
		+	</div>
		+
		+
	''Deprecated: see [[Talk:FixLuminance\|discussion]]''		''Deprecated: see [[Talk:FixLuminance\|discussion]]''

@@ Line 5: / Line 5: @@
 :{{Par2|intercept|int|(required)}}
-::Line at which to start correction.
+::Bottom line at which to start correction. {{FuncArg|intercept}} should be equal to or smaller than the height of the image.
 :{{Par2|slope|int|(required)}}
@@ Line 11: / Line 11: @@
 ::Maximum darkening (at top line) = {{FuncArg|intercept}} / {{FuncArg|slope}}
-The purpose of this filter is to progressively darken the top of the image; for example, to compensate for certain VCRs which make the top of each frame brighter than the bottom. This filter works only with [[YUY2]] input.
+The purpose of this filter is to progressively darken the top of the image; for example, to compensate for certain VCRs which make the top of each frame brighter than the bottom. In practice it only works for NTSC content and it needs its fields separated.
 ==== Examples ====

← Older revision		Revision as of 00:53, 25 January 2016
Line 1:		Line 1:
		+	''Deprecated: see [[Talk:FixLuminance\|discussion]]''
		+
		+
	{{Template:FuncDef\|FixLuminance(clip ''clip'', int ''intercept'', int ''slope'')}}		{{Template:FuncDef\|FixLuminance(clip ''clip'', int ''intercept'', int ''slope'')}}

@@ Line 7: / Line 7: @@
 ::Slope of correction function. The top of the picture is made darker by 1 (on a 0-255 scale) every {{FuncArg|slope}} lines.
 ::Maximum darkening (at top line) = {{FuncArg|intercept}} / {{FuncArg|slope}}
 The purpose of this filter is to progressively darken the top of the image; for example, to compensate for certain VCRs which make the top of each frame brighter than the bottom. This filter works only with [[YUY2]] input.
 [[Category:Internal filters]]
 [[Category:Levels_and_Chroma_filters]]

← Older revision		Revision as of 14:42, 8 November 2015
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	[[Category:Internal filters]]		[[Category:Internal filters]]
		+	[[Category:Levels_and_Chroma_filters]]