Difference between revisions of "Barrel distortion"

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'''Barrel distortion''' is the opposite of [[pincushion distortion]], it is a radial image distortion
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This is stub article and needs to be expanded by somebody with pictures etc.. please go ahead.
introduced by the lens itself.
 
  
It is a common [[Lens distortion]] that can be corrected by the [[lens correction model]] of panotools.
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== Tools to correct barrel distortion ==
  
[[Image:Barrel-distortion.jpg|frame|none|A photograph showing exaggerated barrel distortion]]
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* The original [[PTStitcher]] can be scripted to batch process images with known a, b & c parameters.  It can also be operated with one of the GUI tools such as [[PTGui]], [[PTAssembler]], [[hugin]] or [[PTMac]].
[[Category:Glossary]]
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* [[nona]] or [[nona_gui]] (both part of the [[hugin]] distribution) can be used identically to [[PTStitcher]].
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* The Correct filter in the [[Panorama Tools Plugins]] for the [[gimp]] or [[photoshop]] uses the same a, b & c parameters as [[PTStitcher]].  Note that it doesn't know about d & e parameters and uses 'd' as an overall scaling factor instead.
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* [[PTLens]] is a [[Photoshop]] plugin and a stand-alone Windows tool that uses the same a, b & c parameters and comes with a database of popular lenses.
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* [[Clens]] is a command line version of [[PTLens]].
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* [[Gimp wideangle plugin]] uses a different formula altogether to correct distortion.
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* [[Gimp phfluuh plugin]] is another tool that corrects lens distortion using yet another formula.
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* [[CamChecker]] is a tool for automatically determining lens distortion and generates a different set of parameters from everything else.
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* [[zhang_undistort]] is a tool ditributed with [[hugin]] that uses [[CamChecker]] parameters to actually correct distortion.

Revision as of 19:06, 14 May 2005

This is stub article and needs to be expanded by somebody with pictures etc.. please go ahead.

Tools to correct barrel distortion

  • The original PTStitcher can be scripted to batch process images with known a, b & c parameters. It can also be operated with one of the GUI tools such as PTGui, PTAssembler, hugin or PTMac.
  • PTLens is a Photoshop plugin and a stand-alone Windows tool that uses the same a, b & c parameters and comes with a database of popular lenses.
  • CamChecker is a tool for automatically determining lens distortion and generates a different set of parameters from everything else.