Gamma - Revision history

Erik Krause: Pointed to new mirror

2011-05-21T23:57:53Z

Pointed to new mirror

Erik Krause: interwiki linked

2007-11-20T16:35:33Z

interwiki linked

Erik Krause: Prepared for new glossary template

2007-11-17T23:14:29Z

Prepared for new glossary template

Bruno: update enblend gamma info

2007-02-11T21:09:43Z

update enblend gamma info

Bruno: strong

2007-02-08T00:04:42Z

strong

Bruno: Some more detail

2007-02-07T23:53:15Z

Some more detail

WikiSysop: 2 revision(s)

2006-07-13T20:24:36Z

2 revision(s)

WikiSysop: 1 revision(s)

2006-07-13T19:55:18Z

1 revision(s)

Bruno: categorised

2005-11-11T12:21:19Z

categorised

Bruno: categorised

2005-11-11T12:21:19Z

categorised

New page

'''Gamma''' is the relation between pixel value respectivley electric power and visible brightness on a specific output medium.

For details see wikipedia: [http://en.wikipedia.org/wiki/Gamma_correction]

Detailed explanations in the Gamma FAQ: [http://www.poynton.com/notes/colour_and_gamma/GammaFAQ.html]
[[Category:Glossary]]

@@ Line 23: / Line 23: @@
 working with linear data you probably need to change to gamma = 2.2 before running enblend.
-See Helmut Dersch's article on [http://www.path.unimelb.edu.au/~dersch/gamma/gamma.html Interpolation and Gamma Correction].
+See Helmut Dersch's article on [http://www.panotools.org/dersch/gamma/gamma.html Interpolation and Gamma Correction].
 For details see the [[w:gamma correction]] article and the
 [http://www.poynton.com/notes/colour_and_gamma/GammaFAQ.html Gamma FAQ].
 [[Category:Glossary]]

@@ Line 25: / Line 25: @@
 See Helmut Dersch's article on [http://www.path.unimelb.edu.au/~dersch/gamma/gamma.html Interpolation and Gamma Correction].
-For details see the [http://en.wikipedia.org/wiki/Gamma_correction wikipedia gamma correctiona article] and the
+For details see the [[w:gamma correction]] article and the
 [http://www.poynton.com/notes/colour_and_gamma/GammaFAQ.html Gamma FAQ].
 [[Category:Glossary]]

← Older revision		Revision as of 23:14, 17 November 2007
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		+	{{Glossary\|The relation between pixel values and visible brightness.}}
	'''Gamma''' is the relation between pixel value respectively electric power and visible brightness on a specific output medium.		'''Gamma''' is the relation between pixel value respectively electric power and visible brightness on a specific output medium.

@@ Line 1: / Line 1: @@
-'''Gamma''' is the relation between pixel value respectivley electric power and visible brightness on a specific output medium.
+'''Gamma''' is the relation between pixel value respectively electric power and visible brightness on a specific output medium.
 Although for common uses the '''gamma''' value just controls the subjective brightness of the mid range
-of pixels, there are certain situations in a photo stitching workflow where it makes a quantitive difference
+of pixels, there are certain situations in a photo stitching workflow where it makes a quantitative difference
 to the results:
 * Pixel values are interpolated when correcting TCA (transverse [[chromatic aberration]]).
 * Pixel intensity is scaled when correcting [[vignetting]].
-* Pixel values are interpolated when photos are reprojected into the output image.
+* Pixel values are interpolated when photos are re-projected into the output image.
 * Blending via feathering, [[enblend]] or [[smartblend]] averages pixel values between images.
@@ Line 18: / Line 18: @@
 [[nona]], [[PTStitcher]] and [[PTmender]] all accept a '''g''' (gamma) parameter on the '''m''' line, most
 [[GUI front-ends]] allow you to set this.
 See Helmut Dersch's article on [http://www.path.unimelb.edu.au/~dersch/gamma/gamma.html Interpolation and Gamma Correction].

@@ Line 13: / Line 13: @@
 work internally with gamma corrected data like so:
-When using [[fulla]] to correct chromatic aberration and vignetting, be sure to set the -i parameter to
+When using [[fulla]] to correct chromatic aberration and vignetting, be sure to set the '''-i''' parameter to
 the gamma of your input images.

← Older revision	Revision as of 20:24, 13 July 2006
(One intermediate revision by one user not shown)

← Older revision		Revision as of 12:21, 11 November 2005
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	Detailed explanations in the Gamma FAQ: [http://www.poynton.com/notes/colour_and_gamma/GammaFAQ.html]		Detailed explanations in the Gamma FAQ: [http://www.poynton.com/notes/colour_and_gamma/GammaFAQ.html]
		+	[[Category:Glossary]]