An all-one-way network data for autonomous driving is generated according to traffic information of a road data included in a navigation map data. The lane network data for autonomous driving is generated based on the all-one-way network data according to information of a numerical number of lanes in the road data. A virtual lane boundary data is generated based on the all-one-way network data. A position of the lane network data and a position of the virtual lane boundary data are corrected according to a basic road map data and an aerial photograph data.

Centerlines for generating network data of an indoor space can be simplified while the amount of calculation is limited. A centerline simplification unit 240 performs processing of deleting centerlines of passages that are movable regions in an indoor space and processing of correcting centerlines. A determination unit 242 determines whether or not the simplification has ended based on the number of centerlines or the number of vertices connecting the centerlines.

A navigation information device is provided with a position acquisition unit for acquiring a position information of its own ship, a memory for storing display settings corresponding to a waypoint that is a via point on a planned route, and a display processing unit for performing generation processing for generating a screen in which the position information is superimposed on a chart, and performing change processing for changing display settings to display settings corresponding to the waypoint based on a positional relationship between the position information and the waypoint.

Systems and methods for presenting marine information are provided herein. A system includes an array of a plurality of sonar transducer elements associated with a watercraft and a display. The system causes presentation of a chart of a body of water, including a representation of the watercraft at a current location. The system also operates the array to cause transmission of sonar beams into the underwater environment and receives sonar return data from the array. The system further generates, based on the sonar return data, a two-dimensional live sonar image, determines a facing direction of the array, and causes presentation of the sonar image in the facing direction on the chart and relative to the representation of the watercraft. Accordingly, live sonar imagery is presented on the chart to visually provide a relationship between objects within the live sonar imagery and the real-world position of those objects.

A tablet-like device is configured to have a slightly negative buoyancy and to hold a sheet of waterproof synthetic paper, or another removable, waterproof recording sheet, onto which notes or messages or sketches can be recorded via a writing implement, in an underwater or marine environment, or another extreme or severe environment.

A method is provided for generating and revising map geometry based on a received image and probe data. A method may include: receiving probe data from a first period of time, where the probe data from a first period of time is from a plurality of probes within a predefined geographic region; generating a first image of the predefined geographic region based on the probe data from the first period of time; receiving probe data from a second period of time different from the first period of time, where the probe data from the second period of time is from a plurality of probes within the predefined geographic region; generating a second image based on the probe data from the second period of time; comparing the first image to the second image; and generating a revised route geometry based on changes detected between the first image and the second image.

Various systems and methods of aggregating and analyzing geographically indexed data are disclosed. The system can include a server database hosting an application that a client computer may access via a web browser according to a SaaS architecture. The server database can store a variety of geographically indexed data, which may include economic data, demographic data, social data, and various other data types. The server database can be programmed to cause the client to display a map for receiving a selected geographic area defined on the map and then retrieve selected data corresponding to user-selected criteria for the selected geographic area. The server database can then transmit the selected data to the client for display on the map.

A server device stores on a storage unit an advanced map database which includes feature information associated with a feature. The server device receives, from vehicle mounted devices equipped with external sensors which measure features, difference information indicative of a difference between feature information and the actual feature corresponding to the feature information. In accordance with the degree of reliability which is calculated based on a plurality of the difference information, the server device sends to the vehicle mounted device a raw data request signal for requesting the transmission of raw data which is measurement data of the actual feature.

There is provided a technique that can appropriately display route icons. A map display system includes a display section obtaining part that obtains display sections each being a section of a route to be displayed on a map; a connecting point obtaining part that obtains a connecting point, the connecting point being a point where different routes are connected together on the display sections; and a map display part that displays at least one route icon for each split section, the route icon being an image associated with a route, and the split section being obtained by splitting each of the display sections by the connecting point.

There is provided a technique that can appropriately display route icons. A map display system includes a display section obtaining part that obtains display sections each being a section of a route to be displayed on a map; a connecting point obtaining part that obtains a connecting point, the connecting point being a point where different routes are connected together on the display sections; and a map display part that displays at least one route icon for each split section, the route icon being an image associated with a route, and the split section being obtained by splitting each of the display sections by the connecting point.