Patent ID: 8958009
Filing Date: 2015-02-17
Classification: G02B,H04N

Abstract:
1. An image-capturing device, comprising: an input unit that inputs a subject image formed by an optical system manifesting axial chromatic aberration as an input image; an edge detection unit that detects edges in the input image input by the input unit, each in correspondence to one of color components; a focus adjustment unit that executes focus adjustment for the optical system by detecting contrast differences of the edges corresponding to individual color components having been detected by the edge detection unit and then moving a focus adjustment lens included in the optical system; a lens moving direction determining unit that determines a moving direction along which the focus adjustment lens is to move for purposes of focus adjustment based upon a difference between the edges corresponding to the individual color components having been detected by the edge detection unit and the axial chromatic aberration; a resolution change correction unit that corrects a resolution change occurring in relative resolution levels of the individual color components due to a factor other than the axial chromatic, aberration, based upon the edges corresponding to the individual color components having been detected by the edge detection unit; and a calculation unit that calculates a blurring width difference indicating a difference between edge blurring widths of edges corresponding to two color components each manifesting the axial chromatic aberration among, the edges of the individual color components having been detected by the edge detection unit, wherein: