Terminology

The following terms are used throughout this documentation.

contributor

A Hivemapper account that contributes content to the global map via any mode - smartphone, dashcam, or drone.

user

A Hivemapper account that uses the global map via one of the Map APIs.

location telemetry

GPS coordinates and timestamps for each trace.

map tile

Square shaped tile that is 0.001 sq km. User facing API queries access and consume data at this size.

airborne tile

Hex shaped tile that is 0.1 sq km in size. The airborne tile is the atomic unit for contributions made via a drone. Learn more about tiles in the Tile System section.

ground tile

Hex shaped tile that is 0.0000063 sq km in size. The ground tile is the atomic unit for contributions made via a dashcam or smartphone. Learn more about tiles in the Tile System section.

location accuracy

Determines the accuracy of coordinates for a given location. For example, if the coordinates provided are with 50cm of the exact location to which they refer, then it is accurate to say that the location accuracy is 50cm.

resolution

The smallest size an object can be represented in an image. For example, if an image has 30 cm per pixel (often referred to as 30cm resolution) that means each pixel represents 30 cm in the physical space. 5 cm resolution means each pixel represents a mere 5 cm of physical space so it will be much easier to see small objects.

georegistration

The process of finding and assigning real world geographic coordinates. For example, if somebody maps a 1 sq km area how this section gets assigned accurate real world coordinates and combined with the rest of the global map is the process of georegistration.

Another way to think about georegistration is to think of the map as a puzzle where each new piece of content uploaded to Hivemapper forms one piece. The puzzle is only complete when each piece is in its proper place.

titan

the mapping engine that transforms content into the global map.