OBJECT DISTRIBUTION RANGE SETTING DEVICE AND OBJECT DISTRIBUTION RANGE SETTING METHOD

• US 20130120373A1
• Filed: 03/31/2011
• Published: 05/16/2013
• Est. Priority Date: 05/21/2010
• Status: Abandoned Application

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Morinaga, Yasuo, Ota, Manabu
• Application Number:
  US13/699,387
• Publication Number:
  US 20130120373A1
• Time in Patent Office: Days
• US Class Current: 345/419
• CPC Class Codes: G06F 3/011 Arrangements for interaction with the human body, e.g. for user immersion in virtual reality blind teaching G09B21/00
• CPC Class Codes: G06T 15/00 3D [Three Dimensional] image rendering
• CPC Class Codes: G06T 19/006 Mixed reality object pose determination, tracking or camera calibration for mixed reality G06T7/00
• CPC Class Codes: H04M 11/08 specially adapted for optional reception of entertainment or informative matter

Abstract

An object management device includes a distribution range setting unit that sets a range where an object is visible as a distribution range of object information related to the object for each of the object information based on a located position of the object and map information. Consequently, when the mobile terminal is located in the position where the object is visible, the object information of the object is distributed to the mobile terminal. It is thereby possible to appropriately distribute object information to be distributed so as to appropriately display the object on the mobile terminal.

Claims

1. An object distribution range setting device for setting a distribution range in object information to be distributed to a mobile terminal when a position of the mobile terminal corresponds to the distribution range, comprising:

an object information storage unit configured to store the object information containing information about a located position of an object;

a map information storage unit configured to store map information containing information about a position and shape of a shield blocking a line of sight in a real space;

an object information acquisition unit configured to acquire the object information from the object information storage unit;

a map information acquisition unit configured to acquire the map information from the map information storage unit; and

a distribution range setting unit configured to set a range where the object is visible as the distribution range for each of the object information based on the located position of the object indicated by the object information acquired by the object information acquisition unit and the map information acquired by the map information acquisition unit.

2. The object distribution range setting device according to claim 1, wherein

the distribution range setting unit virtually generates a plurality of line segments having a specified length with the located position of the object as an endpoint in a real space defined based on the map information and, when the line segment intersects with the shield in a position within the specified length from the located position of the object, sets an intersection between the line segment and the shield as a correction point and, when the line segment does not intersect with the shield, sets another endpoint of the line segment as a correction point, and then sets a region defined by a line connecting a plurality of correction points respectively set for the plurality of line segments as the distribution range.

3. The object distribution range setting device according to claim 2, wherein

the map information storage unit stores a transparency attribute in association with the shield when the shield is a transparent object, and

even if the line segment intersects with the shield, when the transparency attribute is associated with the shield, the distribution range setting unit sets the correction point assuming that the shield does not exist.

4. The object distribution range setting device according to claim 2, wherein

the map information storage unit stores map information represented two-dimensionally, and

the distribution range setting unit generates a plurality of line segments extending from the located position of the object on the two-dimensional map as an endpoint, with a specified angular interval over 360 degrees around the located position of the object.

5. The object distribution range setting device according to claim 2, wherein

the map information storage unit stores map information represented three-dimensionally, and

the distribution range setting unit virtually sets a sphere centering on the located position of the object and with a radius of a specified length of the line segment and generates a plurality of line segments so that the other endpoints exist with a specified interval all over the sphere.

6. An object distribution range setting method in an object distribution range setting device for setting a distribution range in object information to be distributed to a mobile terminal when a position of the mobile terminal corresponds to the distribution range, the method comprising:

an object information acquisition step of acquiring the object information from an object information storage unit storing the object information containing information about a located position of an object;

a map information acquisition step of acquiring the map information from a map information storage unit storing map information containing information about a position and shape of a shield blocking a line of sight in a real space; and

a distribution range setting step of setting a range where the object is visible as the distribution range for each of the object information based on the located position of the object indicated by the object information acquired in the object information acquisition step and the map information acquired in the map information acquisition step.