DISPLAY CONTROLLER, DISPLAY DEVICE, DISPLAY SYSTEM, MOBILE OBJECT, IMAGE GENERATION METHOD, AND CARRIER MEANS

A display controller () includes an information acquisition unit configured to obtain input data of attentional resources of an occupant of a mobile object such as traveling time, occupant status information, driving environment information or display image history and a display-image generation unit configured to generate, in a mode determined based on the input data, a display image to be displayed by a display device () provided for the mobile object. The mobile object is for instance a vehicle comprising a head-up display.