Security system, security method, and non-transitory computer readable medium

Abstract

A security system ( 10 ) includes an image information acquisition unit ( 11 ) that acquires input image information on an image taken of a person in a store, a tracking unit ( 12 ) that tracks an action of a hand of the person based on the input image information, and a suspicious action detection unit ( 13 ) that detects a suspicious action of the person based on the tracked action of the hand. A security system, a security method, and a security program capable of accurately detecting a suspicious action are thereby provided.

1 . A security system comprising:
 an image information acquisition unit that acquires input image information on an image taken of a person in a store;   a tracking unit that tracks an action of a hand of the person based on the input image information; and   a suspicious action detection unit that detects a suspicious action of the person based on the tracked action of the hand.   
     
     
         2 . The security system according to  claim 1 , wherein the input image information is distance image information containing image information on an image of a target taken and distance information on a distance to the target measured. 
     
     
         3 . The security system according to  claim 1 , wherein the suspicious action detection unit detects an action of the person that fraudulently acquires a product based on the action of the hand. 
     
     
         4 . The security system according to  claim 1 , wherein the suspicious action detection units detects an action of the person that fraudulently changes a product based on the action of the hand. 
     
     
         5 . The security system according to  claim 1 , wherein the suspicious action detection unit detects an action of the person that fraudulently acquires money based on the action of the hand. 
     
     
         6 . The security system according to  claim 1 , wherein the suspicious action detection unit determines a suspicion level in accordance with the detected suspicious action. 
     
     
         7 . The security system according to  claim 6 , wherein the suspicious action detection unit determines the suspicion level in accordance with a length of an action time of the suspicious action. 
     
     
         8 . The security system according to  claim 6 , wherein the suspicious action detection unit determines the suspicion level in accordance with the number of products related to the suspicious action. 
     
     
         9 . The security system according to  claim 6 , wherein the suspicious action detection unit determines the suspicion level in accordance with an amount of money related to the suspicious action. 
     
     
         10 . The security system according to  claim 6 , wherein the suspicious action detection unit determines the suspicion level in accordance with whether the person is a suspicious person. 
     
     
         11 . The security system according to  claim 6 , wherein the suspicious action detection unit determines the suspicion level in accordance with congestion in the store. 
     
     
         12 . The security system according to  claim 1 , comprising:
 an alert output unit that outputs an alert in accordance with the detected suspicious action.   
     
     
         13 . The security system according to  claim 6 , comprising:
 an alert output unit that outputs an alert for the suspicious action in accordance with the detected suspicious action.   
     
     
         14 . A security method comprising:
 acquiring input image information on an image taken of a person in a store;   tracking an action of a hand of the person based on the input image information; and   detecting a suspicious action of the person based on the tracked action of the hand.   
     
     
         15 . A non-transitory computer readable medium storing a security program causing a computer to perform a security process comprising:
 acquiring input image information on an image taken of a person in a store;   tracking an action of a hand of the person based on the input image information; and   detecting a suspicious action of the person based on the tracked action of the hand.   
     
     
         16 . A security system comprising:
 an image information acquisition means for acquiring input image information on an image taken of a person in a store;   a tracking means for tracking an action of a hand of the person based on the input image information; and   a suspicious action detection means for detecting a suspicious action of the person based on the tracked action of the hand.