Patent ID: 8363937
Filing Date: 2013-01-29
Classification: H04N

Abstract:
1. An image processing device performing a process of correcting aberration which depends on an image height on image data expressing a color of each pixel by a pixel data component for a reference wavelength being predetermined and by pixel data components for a first wavelength and a second wavelength, the first wavelength and the second wavelength being different from the reference wavelength, the image processing device comprising: an aberration correcting unit which obtains (1) an amount of distortion including a chromatic aberration of magnification for the first wavelength by applying, to an amount of distortion of the reference wavelength at the image height, a correction value calculated based on a difference of a rate of magnification conversion due to chromatic aberration of magnification which corresponds to the image height and the first wavelength, and (2) an amount of distortion including a chromatic aberration of magnification for the second wavelength by applying, to the amount of distortion of the reference wavelength at the image height, a correction value calculated based on a difference of a rate of magnification conversion due to chromatic aberration of magnification which corresponds to the image height and the second wavelength; and a position calculating unit estimating, for respective pixels corresponding to the reference wavelength, an amount of displacement of an image location due to a distortion by using an equation expressing a relationship between an amount of distortion at the image height and the amount of displacement, and estimating, for respective pixels corresponding to the first wavelength and the second wavelength, an amount of displacement of an image location due to a distortion including a correction of chromatic aberration of magnification by replacing the amount of distortion in the equation with the amount of distortion corrected by the aberration correcting unit for the first wavelength and the second wavelength.