IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND IMAGE PROCESSING SYSTEM

A display image to be displayed on a display unit is obtained in accordance with motion of a viewpoint of a driver, on the basis of a captured image obtained by capturing an image on a rear side from a vehicle, when a line-of-sight of the driver is in a certain region including the display unit. For example, the display image is obtained in accordance with a deviation of a viewpoint position of the driver from a reference viewpoint position. For example, the reference viewpoint position is updated on the basis of a long-term fluctuation of the viewpoint position. For example, the reference viewpoint position is not updated when a line-of-sight of the driver is in a certain region including a display unit that displays a display image.