Navigation system

Abstract

A navigation system has a map database (5) which holds map data, a position / direction measurement section (4) which measures a present position and a direction, a path computing section (12) which computes a guiding path from the present position measured by the position / direction measurement section to a destination on the basis of the map data read from the map database, a camera (7) which photographs the front, a video acquisition section (8) which acquires the video of the front video captured by the camera (7), a bypass acquisition section (16) which acquires a bypass connected to a position between the present position and the guiding point of the guiding path computed by the path computing section, a video synthesis processing section (14) which superimposes and synthesizes a figure expressing the bypass acquired by the bypass acquisition section onto the video acquired by the video acquisition section, and a display section (10) which displays the video synthesized by the video synthesis processing section.

Description

technical field [0001] The invention relates to a navigation device for guiding users to a destination, in particular to a technique for displaying guidance information on a live video captured by a camera. Background technique [0002] In a conventional car navigation device, there is known a technique of shooting the front in real time with a car camera while driving, and superimposing guidance information based on CG (Computer Graphics: Computer Graphics) on the video obtained by the shooting. displayed to perform route guidance (for example, refer to Patent Document 1). [0003] In addition, as a similar technique, Patent Document 2 discloses a car navigation system that displays elements of navigation information so that they can be grasped visually. This in-vehicle navigation system uses a camera mounted on the front of the car to capture the scenery in the direction of travel. For the background display of navigation information elements, a map image and live video c...

AI Technical Summary

Problems solved by technology

[0009] However, in the technique disclosed in Patent Document 3, although the color or shape of the object varies with distance, the shape of the guidance route of the guidance point is not considered

Therefore, the same guidance is displayed as long as the distance is the same regardless of whether there are sideways or other easily mistaken roads in the guidance route to the guidance point. Therefore, the user may mistakenly turn at the intersection in front of him.

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