Surveillance system and surveillance method
AssigneeHitachi Kokusai Electric Inc.
InventorsSeiichi Hirai, Naoki Hashiguchi
Life of this patent
Estimating the term…
Abstract
Surveillance system and surveillance method for detecting intruders. An image-pickup unit takes an image of a predetermined area, a person detection unit detects, on the basis of the taken image, information concerning people pictured in the image, radio terminal units are held and carried by people, radio reception units receive signals transmitted by radio from the radio terminal units present in the predetermined area, a terminal detection unit detects information concerning the radio terminal units on the basis of the received signals and an intruder decision unit detects information concerning an intruder on the basis of the information concerning the detected persons and the information detected in connection with the radio terminal units.
Claims9
A surveillance system for detecting an illegal object, comprising:
- an image-pickup unit for taking an image of a predetermined area;
- an object detection unit for detecting information concerning objects pictured in the image on the basis of said image taken by said image-pickup unit;
- radio terminal units held by legitimate objects;
- radio reception units for receiving signals transmitted by radio from said radio terminal units present in said predetermined area;
- a terminal detection unit for detecting information concerning said radio terminal units on the basis of the signals received by said radio reception units;
- and
- an illegal object detection unit for detecting information concerning an illegal object on the basis of the information detected by said object detection unit and the information detected by said terminal detection units.
A surveillance method for detecting an illegal object, comprising the steps of:
- taking an image of a predetermined area by means of an image-pickup unit;
- detecting, on the basis of the image taken by said image-pickup unit, information inclusive of the number of objects pictured in said image and their positions by means of an object detection unit;
- receiving signals transmitted by radio from radio terminal units held by said objects present in said predetermined area by means of radio reception units;
- detecting, on the basis of the signals received by said radio reception units, information inclusive of the number of said radio terminal units and positions thereof by means of a terminal detection unit;
- and
- detecting, on the basis of the information detected by said object detection unit and the information detected by said terminal detection unit, information concerning an illegal object by means of an illegal object detection unit.
A surveillance method for detecting an illegal object, comprising the steps of:
- storing sizes of legitimate objects holding and carrying radio terminal units in a storage unit in advance by making the correspondence between the sizes and pieces of ID data of said radio terminal units;
- taking an image of a predetermined area by means of an image-pickup unit;
- detecting information inclusive of the number, positions and sizes of objects in the image on the basis of the image taken by said image-pickup unit by means of an object detection unit;
- receiving signals transmitted by radio from the radio terminal units held by the objects present in said predetermined area by means of radio reception units;
- detecting information inclusive of the number, positions and ID data of the radio terminal units on the basis of the signals received by said radio reception units by means of a terminal detection unit;
- and
- detecting, on the basis of the information detected by said object detection unit and the information detected by said terminal detection unit, information concerning an illegal object by means of an illegal object detection unit.
Dependencies are inferred from the claim text.