A vehicle surroundings monitoring apparatus that extracts a body present in the surrounding of a vehicle as an object, based on an image captured by an infrared imaging device, includes: a binarized object extraction device that extracts a binarized object from image data obtained by binarizing a gray scale images of the image; a search region setting device that sets a plurality of search regions vertically using a predetermined height as a reference; a search region extraction device that extracts a search region having a distance to the infrared imaging device substantially equal to a distance between the binarized object and the infrared imaging device, among a plurality of the search regions; a correlation degree determination device that determines a degree of correlation between the plurality of search regions; a height calculation device that calculates a height of the binarized object; and an object type determination device that determines a type of the object.

 
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