Distance measurement device, movable apparatus, and control method

Abstract

A distance measurement device includes an image capturing unit configured to be capable of capturing images of first image information and second image information having parallax therebetween from one optical system, and a parallax calculation unit configured to extract image information within a search window from each of the first image information and the second image information and calculate an amount of parallax using a correlation between image information of the first image information within the search window and image information of the second image information within the search window which have been extracted. The parallax calculation unit sets the search window on the basis of an optical characteristic value of an image height for performing parallax calculation. The optical characteristic value corresponds a centroidal gap between a centroid of a first luminous flux forming the first image information and a centroid of a second luminous flux forming the second image information on an exit pupil of the optical system.