ShowPixelValues - Revision history

Reel.Deal: reformat

2015-09-14T18:01:26Z

reformat

Reel.Deal: /* Syntax and Parameters */

2014-09-20T20:40:28Z

Syntax and Parameters

← Older revision		Revision as of 22:40, 20 September 2014
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	<br>		<br>
	== [[Script variables\|Syntax and Parameters]] ==		== [[Script variables\|Syntax and Parameters]] ==
	:<code>ShowPixelValues (clip clip[, int Left default=0] [, int Top default=0 ][,bool ShowValues default=true][ , bool ShowArea default=false][, int Bright default=235][, int Dim default=160][,int Threshold default=200][,bool ShowPixels default=true])</code>		:<code>'''ShowPixelValues''' (clip clip[, int Left default=0] [, int Top default=0 ][,bool ShowValues default=true][ , bool ShowArea default=false][, int Bright default=235][, int Dim default=160][,int Threshold default=200][,bool ShowPixels default=true])</code>
	<br>		<br>
	::*'''Left''' and '''Top''' dictate what part of the frame will be expanded to examine. Left is always adjusted to be an even value. Left and Top are limited to maximum values to prevent trying to magnify an area not in the frame.		::*'''Left''' and '''Top''' dictate what part of the frame will be expanded to examine. Left is always adjusted to be an even value. Left and Top are limited to maximum values to prevent trying to magnify an area not in the frame.
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	::*'''ShowPixels''' - if false then it blanks underlying pixel colour to improve value clarity.		::*'''ShowPixels''' - if false then it blanks underlying pixel colour to improve value clarity.
	<br>		<br>

	==Examples==		==Examples==
	Show the pixel values at the top left of the frame:		Show the pixel values at the top left of the frame:

Reel.Deal: reformat

2014-09-20T20:37:53Z

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-This diagnostic filter displays the actual Y U and V (or R G and B) values from pixels within a frame. This can be useful in determining levels or seeing how another filter changes actual pixel values.
+*Official homepage and documentation: [http://web.archive.org/web/20091028073306/http://geocities.com/siwalters_uk/showpixelvalues.html showpixelvalues.html]
-*Official homepage and documentation: [http://web.archive.org/web/20091028073306/http://geocities.com/siwalters_uk/showpixelvalues.html showpixelvalues.html]
+Please email me if you have any queries/comments/ideas/bug reports
-*'''Download:''' [http://web.archive.org/web/20091028122947/http://geocities.com/siwalters_uk/showpixelvalues1.4c.zip showpixelvalues1.4c.zip]
+Copyright Simon Walters siwalters@hotmail.com
 {{FilterCat4|External_filters|Plugins|Other_filters|Debugging/Diagnostic_filters}}

Reel.Deal: Page was very messy.

2014-09-20T20:00:46Z

Page was very messy.

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 This diagnostic filter displays the actual Y U and V (or R G and B) values from pixels within a frame. This can be useful in determining levels or seeing how another filter changes actual pixel values.
-To examine RGB24, simple use ConvertToRGB32 before this filter.
+*Official homepage and documentation: [http://web.archive.org/web/20091028073306/http://geocities.com/siwalters_uk/showpixelvalues.html showpixelvalues.html]
-To examine YV12, use ConvertToYUY2 before this filter but BEWARE YV12/YUY2 INTERLACING/PROGRESSIVE CONVERSION ISSUES!
+*'''Download:''' [http://web.archive.org/web/20091028122947/http://geocities.com/siwalters_uk/showpixelvalues1.4c.zip showpixelvalues1.4c.zip]
-In YUY2 mode the filter outputs pairs of magnified pixels with their Y U and V values e.g.
+*Discussion: [http://forum.doom9.org/showthread.php?t=64192 Doom9 Thread]
-  131
+{{FilterCat4|External_filters|Plugins|Other_filters|Debugging/Diagnostic_filters}}

Admin: 1 revision

2013-05-19T22:03:49Z

1 revision

← Older revision	Revision as of 00:03, 20 May 2013
(No difference)

Wilbert at 21:43, 19 May 2013

2013-05-19T21:43:11Z

New page

This diagnostic filter displays the actual Y U and V (or R G and B) values from pixels within a frame. This can be useful in determining levels or seeing how another filter changes actual pixel values.

It currently supports YUY2 and RGB32 colour spaces.

To examine RGB24, simple use ConvertToRGB32 before this filter.

To examine YV12, use ConvertToYUY2 before this filter but BEWARE YV12/YUY2 INTERLACING/PROGRESSIVE CONVERSION ISSUES!

In YUY2 mode the filter outputs pairs of magnified pixels with their Y U and V values e.g.

[[19]] 18

128 131

where 19 = Y1 value, 18 = Y2 value, 128 = U, 131 = V. (if this seems strange it is because each pair of Y value shares its U and V values with each other in YUY2 colourspace). The Y1 value is underlined to make it a bit more obvious which value is which.

In RGB32 mode the filter outputs each magnified pixel with their R G and B values in their respective colours e.g.

74
138
69

where 74 = R value, 138 = G, 69 = B.

Example Avisynth Syntax

LoadPlugin("ShowPixelValues.dll")
AVISource("Test.avi")
ShowPixelValues()
# Show the pixel values at the top left of the frame

The full parameter list is

ShowPixelValues(clip clip[, int Left default=0] [, int Top default=0 ][,bool ShowValues default=true][ , bool ShowArea default=false][, int Bright default=235][, int Dim default=160][,int Threshold default=200][,bool ShowPixels default=true])

Left and Top dictate what part of the frame will be expanded to examine. Left is always adjusted to be an even value. Left and Top are limited to maximum values to prevent trying to magnify an area not in the frame.

ShowValues determines whether the pixel values are displayed.

ShowArea highlights the area that is magnified by drawing a border around it.

Bright (0-255) - Normal brightness of displayed pixel values.

Dim (0-255) - Brightness value used in light areas.

Threshold (0-255) - Threshold for determining light/normal areas.

ShowPixels - if false then it blanks underlying pixel colour to improve value clarity.

Discussion + download: http://forum.doom9.org/showthread.php?t=64192

{{FilterCat|Plugins|External_filters|Other_filters|Debugging/Diagnostic_filters}}