Patent ID: 7965325
Filing Date: 2011-06-21
Classification: G06T,H04N

Abstract:
1. A distortion-corrected image generation unit that generates a distortion-corrected image by correcting distortion of a distorted image captured using a fish-eye lens, the distortion-corrected image generation unit comprising: a distorted image acquisition unit that obtains the distorted image; an internal parameter storage unit that stores a plurality of sets of internal parameters, related to the fish-eye lens, each of the sets being applied to correct a pixel position in a radially extending direction from an image principal point of the distorted image; an internal parameter selection unit that selects, on the basis of a radial direction of a pixel position to be corrected in the distorted image obtained by the distorted image acquisition unit from the image principal point, one set of internal parameters to be applied to correct the pixel position to be corrected from the plurality of sets of internal parameters stored in the internal parameter storage unit; and a distortion-corrected image generator that generates the distortion-corrected image from the distorted image by replacing a pixel value at the pixel position to be corrected with a pixel value at another pixel position on the basis of the set of internal parameters selected by the internal parameter selection unit.