CLARION CO., LTD.

A position estimating apparatus including: a position estimating unit that compares a target in first coordinate system data indicating a position of the target by coordinates in a first coordinate system and a target in second coordinate system data indicating a position of the target present around a position estimation object by coordinates in a second coordinate system set based on a position and an attitude of the position estimation object at a predetermined starting timing, and estimates a position of the position estimation object in the first coordinate system based on a comparison result; and a comparison range adjusting unit that shrinks a coordinate range used for the comparison by the position estimating unit in the second coordinate system data when the position estimation object is turning.

A road surface area detection device includes a normalized speed calculation portion configured to calculate a normalized speed based on a movement of a feature point in an image captured by a camera that is disposed in a vehicle; a determination range calculation portion configured to calculate a road surface determination range, which is indicated by a magnitude of the normalized speed, based on the normalized speeds of at least two feature points at different positions in a width direction of the vehicle in a predetermined central area where the vehicle is positioned in a center thereof in the width direction perpendicular to a vehicle traveling direction; and a road surface area identification portion configured to identify, as a road surface area on which the vehicle travels, a position in the width direction that includes the feature point whose normalized speed is within the road surface determination range.

A solid object detection device includes an overhead view transformation processing unit transforming first and second photographed images photographed by a camera at different timings in travel of a vehicle into first and second overhead view images, respectively, a subtracted image generation unit generating a subtracted image between the first and second overhead view images whose photographing positions are aligned with each other, a solid object position specification unit specifying a position of a solid object present around the vehicle based on the subtracted image, and a masked subtracted image generation unit generating a masked subtracted image in which a region other than a solid object candidate region as a candidate where the solid object appears in the subtracted image is masked and the solid object position specification unit specifies a position of the solid object in the subtracted image based on the masked subtracted image.

A position estimating apparatus including: a position estimating unit that compares a target in first coordinate system data indicating a position of the target by coordinates in a first coordinate system and a target in second coordinate system data indicating a position of the target present around a position estimation object by coordinates in a second coordinate system set based on a position and an attitude of the position estimation object at a predetermined starting timing, and estimates a position of the position estimation object in the first coordinate system based on a comparison result; and a comparison range adjusting unit that shrinks a coordinate range used for the comparison by the position estimating unit in the second coordinate system data when the position estimation object is turning.