An imaging device comprising: an imaging unit (10, 61, 11) that includes an imaging optical system (1, 62, 112) including a first optical system (21, 62, 113) and a second optical system (22, 64, 104) that are provided in different areas and have different imaging characteristics, and a directivity sensor including a plurality of pixels that include photoelectric conversion elements arranged in a two-dimensional shape and pupil-dividing light fluxes that are incident via the first optical system (21, 63, 113) and the second optical system (22, 64, 114), respectively, and selectively receiving the light fluxes using the plurality of pixels; an image reading unit that acquires an image signal of a first image obtained via the first optical system (21, 63, 113) and an image signal of a second image obtained via the second optical system (22, 64, 114) from the directivity sensor; a movement vector detection unit that detects a first movement vector (Vec1, Vec2) that is a movement vector of a subject in the first image and a second movement vector (Vt 1, Vt 2) that is a movement vector of the subject in the second image; a probability calculation unit that calculates a first probability indicating a probability of the first movement vector being a movement vector due to a light flux passing through the first optical system and a second probability indicating a probability of the second movement vector being a movement vector due to a light flux passing through the second optical system; and a movement vector extraction unit that extracts one of a first true movement vector that is a movement vector due to the light flux passing through the first optical system (21, 63, 113) in the first image and a second true movement vector that is a movement vector due to the light flux passing through the second optical system (22, 64, 114) in the second image, as a true movement vector, on the basis of the first true movement vector, the second true movement vector, and a comparison between the first probability and the second probability. an imaging unit (10, 61, 11) that includes an imaging optical system (1, 62, 112) including a first optical system (21, 62, 113) and a second optical system (22, 64, 104) that are provided in different areas and have different imaging characteristics, and a directivity sensor including a plurality of pixels that include photoelectric conversion elements arranged in a two-dimensional shape and pupil-dividing light fluxes that are incident via the first optical system (21, 63, 113) and the second optical system (22, 64, 114), respectively, and selectively receiving the light fluxes using the plurality of pixels; an image reading unit that acquires an image signal of a first image obtained via the first optical system (21, 63, 113) and an image signal of a second image obtained via the second optical system (22, 64, 114) from the directivity sensor; a movement vector detection unit that detects a first movement vector (Vec1, Vec2) that is a movement vector of a subject in the first image and a second movement vector (Vt 1, Vt 2) that is a movement vector of the subject in the second image; a probability calculation unit that calculates a first probability indicating a probability of the first movement vector being a movement vector due to a light flux passing through the first optical system and a second probability indicating a probability of the second movement vector being a movement vector due to a light flux passing through the second optical system; and a movement vector extraction unit that extracts one of a first true movement vector that is a movement vector due to the light flux passing through the first optical system (21, 63, 113) in the first image and a second true movement vector that is a movement vector due to the light flux passing through the second optical system (22, 64, 114) in the second image, as a true movement vector, on the basis of the first true movement vector, the second true movement vector, and a comparison between the first probability and the second probability.