IMPROVEMENTS RELATING TO NAVIGATION ROUTE PLANNING

摘要

A technique is disclosed for calculating a sightseeing route from a start location to a destination location. The start location and the destination location may be the same as each other or different. The route is calculated to pass one or more attractors each representing a sightseeing attraction. A digital database resource (500) contains digital map information, the digital map information including a plurality of attractors. The technique comprises (a) determining (550) an initial route from the start location to the destination location, and setting the initial route as a current route; (b) determining (602) for each attractor in a candidate set of the attractors, a relative attraction value that is dependent on a distance between the attractor and the current route; (c) determining (604, 612) which attractor corresponds to a largest attraction value; (d) modifying (620) the current route to include a deviation to the attractor determined at step (c).