Imaging apparatus and image correction method, and image processing apparatus and image processing method

摘要

An imaging apparatus includes an image-capturing element, an optical axis position estimation processor, and a pixel correction unit. The optical axis position estimation processor includes a relationship calculator and an optical axis position calculator. The relationship calculator calculates a relationship between a pixel output of a phase difference detection pixel and an image height. The optical axis position calculator calculates an optical axis position of an optical system. The pixel correction unit corrects pixel outputs of the respective phase difference detection pixels in accordance with the relationship.

主权项

1. An imaging apparatus comprising:
an image-capturing element configured such that a phase difference detection pixel for detecting a focus is provided in a part of imaging pixels; an optical axis position estimation processor configured to estimate an optical axis position of an optical system configured to form an image of a subject on an image-capturing surface of the image-capturing element, from a pixel output of the phase difference detection pixel and a pixel output of the imaging pixel; and a pixel correction unit configured to correct pixel outputs of the respective phase difference detection pixels, wherein the optical axis position estimation processor includes: a relationship calculator configured to calculate a relationship between the pixel output of the phase difference detection pixel and an image height, from the pixel output of the phase difference detection pixel and a pixel output of an image pixel near the phase difference detection pixel; and an optical axis position calculator configured to calculate the optical axis position, from the relationship calculated with respect to each of a pair of the phase difference detection pixels arranged in a detection direction of a phase difference, and wherein the pixel correction unit corrects pixel outputs of the respective phase difference detection pixels in accordance with the relationship.