Barrel Distortion Correction

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Background

Barrel distortion occurs when the magnification at the center of the lens is greater than at the edges. Fish eye lenses, which take hemispherical views, produce this type of distortion as a result of a hemispherical scene being projected onto a flat surface. A higher quality lens can be used to correct for distortion; however, this will greatly rise the cost of the image capture system. A cost effective alternative to an expensive lens system is to algorithmically correct for barrel distortion using the presented method.

Barrel distortion is primarily radial in nature, therefore it can be corrected using a relatively simple model compensating for the most of the distortion.

Read more: the MIPAV HTML help - Barrel Distortion Correction page.