A vehicle surroundings monitoring apparatus recognizes a pedestrian from
existence of a leg, in the case in which a width in real space of a
binarized object is suitable as a pedestrian's leg, the binarized object
has longwise shape, the lower end position of the binarized object exists
in the lower part (lower half) of a gray scale object region, and a
serial luminance transition exists in the binarized object. The vehicle
surroundings monitoring apparatus also recognizes a pedestrian from
existence of an umbrella held up by the pedestrian, in the case in which
an umbrella region with a low temperature exists above the binarized
object, the width of the umbrella region is suitable as a pedestrian's
umbrella, and, the spatial correlation between the centroid position of
the umbrella region and the centroid position of the binarized object is
suitable as a spatial relationship between a pedestrian and his/her
umbrella.