VEHICLE-SURROUNDINGS MONITORING DEVICE

Said device can thereby accurately output the distance to a target abject. A camera-orientation estimation unit (4) estimates the amount of change in camera orientation on the basis of vehicle speed changes obtained from a vehicle-information acquisition means (2). A distance-information update decision unit (5) decides, on the basis of the amount of change in camera orientation, whether to update distance information by computing new distance information in a distance-computation unit (7) or to update distance information using distance information stored in a distance-information memory unit. If the distance-information update decision unit (5) has decided to update distance information by computing new distance information, a display means (9) displays distance information that the distance-computation unit (7) computes from a real-time image. If the distance-information update decision unit has decided to update using past stored distance information, the display means displays past distance information read from the distance-information memory unit (6).