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20th March 2008, 12:01 | #1 | Link |
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Location: India
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DeBarrel Plugin
DeBarrel is a new plugin that corrects for Barrel type or pin cushion type distortions that are present on all images, but noticeable to different extants. Projecting an image on to a flat film or sensor array by the lens creates the distortion.
These are corrected by specifying 3 parameters. On a perfect grid the following distortions were generated using this plugin in reverse. |
31st March 2008, 03:31 | #9 | Link |
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Join Date: Jul 2003
Location: India
Posts: 890
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Perspective distortion is when you are shooting an object not from a squarely center position. Such distortion can be corrected by my Reform plugin. With a wide angle lens what you mostly see is a barrel type distortion. Please see the full writeup of the plugin. Test procedure to arrive at values of coefficients is given.
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