Abstract: A display controller includes: an image generator configured to generate a three-dimensional image of surroundings of a vehicle and output a display image; an instruction determiner configured to determine an instruction of a user in accordance with a position operated by the user; and a viewpoint changer configured to change a viewpoint parameter related to generation of the three-dimensional image on a basis of the instruction of the user, wherein the instruction determiner sets a plurality of regions corresponding to different viewpoint parameters in the display image, the instruction determiner determines the instruction of the user on a basis of a region where the position operated by the user, the viewpoint changer changes the viewpoint parameter in accordance with the instruction of the user, and the instruction determiner sets the plurality of regions in the three-dimensional image after a change.