Security system, security method, and non-transitory computer readable medium
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:
a memory storing instructions; and
one or more processors coupled to the memory, wherein the one or more processors are configured to execute the instructions to:
acquire input image information of a product shelf in a store and a person in front of the product shelf taken from above the product shelf;
detect a bone structure of the person based on the input image information;
track the bone structure of the person;
detect an action of a hand of the person based on the bone structure, the person being a store staff involved in the business of the store or a customer who visits the store;
determine a suspicious action based on the action of the hand and based on whether the person is the store staff or the customer; and
output alert information based on the determined suspicious action.
2. The security system according to claim 1 , wherein the one or more processors are further configured to execute the instructions to track an action of putting the product in a place other than a predetermined place, and wherein the predetermined place is a shopping basket or a cart.
3. The security system according to claim 2 , wherein the one or more processors are further configured to execute the instructions to track the action of putting the product in a pocket of clothes worn by the person.
4. The security system according to claim 1 , wherein the one or more processors are further configured to execute the instructions to:
record the suspicious action; and
output the recorded suspicious action.
5. The security system according to claim 1 , wherein the one or more processors are further configured to execute the instructions to:
set a level of the suspicious action according to content of the suspicious action; and
output the suspicious action corresponding to a new level higher than a predetermined level.
6. A security method comprising:
acquiring input image information of a product shelf in a store and a person in front of the product shelf taken from above the product shelf;
detecting a bone structure of the person based on the input image information;
tracking the bone structure of the person;
detecting an action of a hand of the person based on the bone structure, the person being a store staff involved in the business of the store or a customer who visits the store;
determining a suspicious action based on the action of the hand and based on whether the person is the store staff or the customer; and
outputting alert information based on the determined suspicious action.
7. The security method according to claim 6 , wherein tracking the bone structure of the person comprises tracking an action of putting the product in a place other than a predetermined place, wherein the predetermined place is a shopping basket or a cart.
8. The security method according to claim 6 , wherein tracking the bone structure of the person comprises tracking an action of putting money in a pocket of clothes worn by the person.
9. The security method according to claim 6 , further comprising:
recording the suspicious action; and
outputting the recorded suspicious action.
10. The security method according to claim 6 , further comprising:
setting a level of the suspicious action according to content of the suspicious action; and
outputting the suspicious action corresponding to a new level higher than a predetermined level.
11. A non-transitory computer readable medium storing a security program causing a computer to perform a security method, the method comprising:
acquiring input image information of a product shelf and a person in front of the product shelf in a store taken from above the product shelf;
detecting a bone structure of the person based on the input image information;
tracking the bone structure of the person;
detecting an action of a hand of the person based on the bone structure, the person being a store staff involved in the business of the store or a customer who visits the store;
determining a suspicious action based on the action of the hand and based on whether the person is the store staff or the customer; and
outputting alert information based on the determined suspicious action.
12. The non-transitory computer readable medium according to claim 11 , wherein tracking the bone structure of the person comprises tracking an action of putting the product in a place other than a predetermined place, wherein the predetermined is a shopping basket or a cart.
13. The non-transitory computer readable medium according to claim 11 , wherein tracking the bone structure of the person comprises tracking an action of putting money in a pocket of clothes worn by the person.
14. The non-transitory computer readable medium according to claim 11 , wherein the security program causes the computer to further perform:
recording the suspicious action; and
outputting the recorded suspicious action.
15. The non-transitory computer readable medium according to claim 11 , wherein the security program causes the computer to further perform:
setting a level of the suspicious action according to content of the suspicious action; and
outputting the suspicious action corresponding to a new level higher than a predetermined level.
16. The security system according to claim 1 , wherein the one or more processors are further configured to execute the instructions to output a warning information based on a state in the store before determining the suspicious action.
17. The security method according to claim 6 , wherein outputting a warning information based on a state in the store occurs before determining the suspicious action.
18. The non-transitory computer readable medium according to claim 11 , wherein the security program causes the computer to further perform outputting a warning information based on a state in the store before determining the suspicious action.