Information processing device, map update method, program, and information processing system

Abstract

There is provided an information processing device including: a global map acquiring unit that acquires at least a part of a global map representing positions of objects in a real space where a plurality of users arc in activity; a local map generating unit that generates a local map representing positions of nearby objects detectable by a device of one user among the plurality of users; and an updating unit that updates the global map based on position data of objects included in the local map.

What is claimed is: 
     
         1 . An information processing device comprising:
 a global map acquiring unit that acquires at least a part of a global map representing positions of objects in a real space where a plurality of users are in activity;   a local map generating unit that generates a local map representing positions of nearby objects detectable by a device of one user among the plurality of users; and   an updating unit that updates the global map based on position data of objects included in the local map.   
     
     
         2 . The information processing device according to  claim 1 , further comprising:
 a calculating unit that calculates a relative position of the local map to the global map based on position data of objects included in the global map and position data of objects included in the local map; and   a converting unit that performs coordinate conversion from the position data of objects included in the local map to data of a coordinate system of the global map according to the relative position of the local map,   wherein the updating unit updates the global map by using the position data of objects included in the local map after the coordinate conversion by the converting unit.   
     
     
         3 . The information processing device according to  claim 1 , wherein
 the information processing device is a terminal device possessed by the one user.   
     
     
         4 . The information processing device according to  claim 3 , wherein
 the global map acquiring unit acquires at least a part of the global map from a server device storing the global map, and   the updating unit updates the global map of the server device by transmitting position data of objects to the server device.   
     
     
         5 . The information processing device according to  claim 4 , wherein
 the global map acquiring unit acquires a part of the global map corresponding to a local area containing a position of the terminal device in the real space.   
     
     
         6 . The information processing device according to  claim 4 , wherein
 the global map acquiring unit acquires a part of the global map representing positions of a predetermined number of objects located in close proximity to the terminal device.   
     
     
         7 . The information processing device according to  claim 1 , wherein
 the local map generating unit generates the local map based on an input image obtained by imaging the real space using an imaging device and feature data indicating a feature of appearance of one or more objects.   
     
     
         8 . The information processing device according to  claim 2 , wherein
 the calculating unit calculates the relative position of the local map based on position data of an immobile object included in common in the global map and the local map.   
     
     
         9 . The information processing device according to  claim 2 , wherein
 the calculating unit calculates the relative position of the local map so that, when converting the position data of objects included in the local map into data of the coordinate system of the global map, a difference between the data after conversion and the position data of objects included in the global map is smaller as a whole.   
     
     
         10 . The information processing device according to  claim 1 , wherein
 the global map includes position data of each object in the real space in the coordinate system of the global map and a time stamp related to the position data.   
     
     
         11 . The information processing device according to  claim 1 , further comprising:
 a display control unit that at least partially visualizes the global map onto a screen in response to an instruction from a user.   
     
     
         12 . A map update method for updating a global map representing positions of objects in a real space where a plurality of users are in activity, performed by an information processing device, the method comprising steps of:
 acquiring at least a part of the global map;   generating a local map representing positions of nearby objects detectable by the information processing device; and   updating the global map based on position data of objects included in the local map.   
     
     
         13 . A program for causing a computer for controlling an information processing device to function as:
 a global map acquiring unit that acquires at least a part of a global map representing positions of objects in a real space where a plurality of users are in activity;   a local map generating unit that generates a local map representing positions of nearby objects detectable by a device of one user among the plurality of users; and   an updating unit that updates the global map based on position data of objects included in the local map.   
     
     
         14 . An information processing system comprising:
 a server device that stores a global map representing positions of objects in a real space where a plurality of users are in activity using a storage medium; and   an information processing device possessed by one user among the plurality of users, the information processing device including
 a global map acquiring unit that acquires at least a part of the global map from the server device, 
 a local map generating unit that generates a local map representing positions of nearby objects detectable by the information processing device, and 
 an updating unit that updates the global map based on position data of objects included in the local map.