Image display control apparatus, electronic mirror system, and image display control program

An electronic mirror system comprising:

• an image display control apparatus;
• an imaging portion that captures an image around a vehicle, and outputs the captured image to the image display control apparatus;
• and
• a display portion that displays an image received from the image display control apparatus,
• wherein
• the image display control apparatus comprising:
• a shift amount calculation portion that calculates a shift amount of an object image that shows an object within an image captured by the imaging portion, the shift amount being an amount of a shift of the object image within a display area of the display portion for a predetermined elapsed time;
• a following speed determination portion that determines a following speed of an additional image for the object image, the following speed being determined based on the shift amount of the object image calculated by the shift amount calculation portion;
• an elapsed time calculation portion that calculates the elapsed time;
• a shift amount determination portion that determines a shift amount of the additional image based on the following speed of the additional image determined by the following speed determination portion and on the elapsed time calculated by the elapsed time calculation portion;
• an additional image synthesis portion that synthesizes the additional image to the object image in accordance with the shift amount of the additional image determined by the shift amount determination portion;
• and
• a display controller that allows the display portion to display a synthetic image produced by synthesizing the additional image to the object image by the additional image synthesis portion.