초록 ▼

PROBLEM TO BE SOLVED: To provide a technology capable of achieving inexpensive and accurate positioning in relation to realtime positioning using an on-vehicle camera.SOLUTION: A realtime positioning unit 1 of a relevant automobile and an on-vehicle information system 100 includes: a first feature e

PROBLEM TO BE SOLVED: To provide a technology capable of achieving inexpensive and accurate positioning in relation to realtime positioning using an on-vehicle camera.SOLUTION: A realtime positioning unit 1 of a relevant automobile and an on-vehicle information system 100 includes: a first feature extraction unit 11 to which a plurality of actual images photographed by an on-vehicle camera 4 in the vicinity of a reference point are input, and extracts a feature part from the actual images and specifies the feature part as first feature information (c1); a second feature extraction unit 12 which reads and acquires corresponding second feature information (c2) from a map DB5; and a feature matching unit 13 which receives input of the first and second feature information and performs matching by comparing the feature parts of the first and second feature information to estimate the position of each of the feature parts, and based on the position, calculates a relative positional relation between the position of the relevant automobile and the position of each of the feature parts at each point of time associated with movement using a structure from motion (SFM) method to estimate the present position of the automobile and output the present position of the automobile as second positional information (L2).

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