Apparatus and method for monitoring surroundings of vehicle

An apparatus for monitoring surroundings of a vehicle carrying the apparatus, comprising:

• an image acquirer configured to acquire a plurality of images of an object captured simultaneously from different positions;
• a corresponding-point displacement calculator configured to set a search region for corresponding points in the plurality of images and calculate a displacement value between the corresponding points;
• a search region modifier configured to, if a number of corresponding-point displacement values acquired by the corresponding-point displacement calculator within a predetermined period of time is less than a predetermined threshold, modify the search region:
• an image displacement calculator configured to, if the number of corresponding-point displacement values acquired by the corresponding-point displacement calculator within the predetermined period of time is equal to or greater than the predetermined threshold, calculate an image displacement value that is an amount of displacement between the plurality of entire images based on the corresponding-point displacement values acquired within the predetermined period of time;
• and
• a displacement corrector configured to correct for the image displacement based on the image displacement value calculated by the image displacement calculator.