Patent ID: 7405746

Claim:
A video navigation apparatus comprising: a photographing unit that photographs a scene; an estimating unit that estimates a position and angles of the photographing unit; an estimate image generating unit that generates an estimate image corresponding to estimate values of a position and angles of the photographing unit estimated by the estimating unit; a collating unit that collates an estimate image generated by the estimate image generating unit with a scenery image photographed by the photographing unit, and corrects an estimate value estimated by the estimating unit according to a result of the collation, which includes a value of difference between the estimate image and the scenery image, wherein the collating unit further estimates a value of error of the estimate value based on the value of difference between the estimate image and the scenery image; an indication image generating unit that generates an indication image by processing indication information indicated in advance based on position information that shows a position of the photographing unit and angle information that shows angles of the photographing unit after correction processing by the collating unit; and a display unit that displays an indication image generated by the indication image generating unit.