Difference between revisions of "Barrel distortion"
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| − | + | ''Barrel distortion'' is the opposite of [[pincushion distortion]]. | |
| − | + | [[Image:Barrel-distortion.jpg|frame|none|A photograph showing exaggerated barrel distortion]] | |
== Tools to correct barrel distortion == | == Tools to correct barrel distortion == | ||
Revision as of 12:20, 20 May 2005
Barrel distortion is the opposite of pincushion distortion.
A photograph showing exaggerated barrel distortion
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.
- nona or nona_gui (both part of the hugin distribution) can be used identically to PTStitcher.
- 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.
- 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.
- Gimp wideangle plugin uses a different formula altogether to correct distortion.
- Gimp phfluuh plugin is another tool that corrects lens distortion using yet another formula.
- CamChecker is a tool for automatically determining lens distortion and generates a different set of parameters from everything else.
- zhang_undistort is a tool ditributed with hugin that uses CamChecker parameters to actually correct distortion.