PERIPHERY MONITORING DEVICE FOR VEHICLE

PROBLEM TO BE SOLVED: To provide a periphery monitoring device for a vehicle, which reduces erroneous detection while efficiently reducing image processing loads for mobile object detection.SOLUTION: A mobile object detection part compares the luminance (estimated as the luminance of a road surface) of a proximate area A when a sonar is not detecting an obstacle and the luminance of distant areas B, C, increases the detection sensitivity of a mobile object in the distant areas B, C (estimated as the road surface) where the difference of the luminance is small, and lowers the detection sensitivity of the mobile object in the distant areas B, C (not only the road surface) where the difference of the luminance is large. Thus, erroneous detection is reduced while efficiently reducing image processing loads for mobile object detection.