Apparatus and method for controlling network camera

• US 9,866,744 B2
• Filed: 12/03/2015
• Issued: 01/09/2018
• Est. Priority Date: 07/23/2015
• Status: Active Grant

• Current Assignee: Hanwha Vision Company Limited (Hanwha Corporation)
• Original Assignee: Hanwha Techwin Co., Ltd. (Hanwha Corporation)
• Inventors: Lee, Hwalsuk, Jang, Jaeho
• Primary Examiner(s): Nazrul, Shahbaz
• Application Number:
  US14/957,739
• Publication Number:
  US 20170163868A1
• Time in Patent Office: 768 Days
• Field of Search: None
• CPC Class Codes: G06T 2207/30241 Trajectory
• CPC Class Codes: G06T 7/20 Analysis of motion motion estimation for coding, decoding, compressing or decompressing digital video signals H04N19/43, H04N19/51
• CPC Class Codes: G06V 20/52 Surveillance or monitoring of activities, e.g. for recognising suspicious objects recognising microscopic objects G06V20/69
• CPC Class Codes: H04N 23/61 based on recognised objects
• CPC Class Codes: H04N 23/661 Transmitting camera control signals through networks, e.g. control via the Internet
• CPC Class Codes: H04N 23/6811 based on the image signal
• CPC Class Codes: H04N 23/80 Camera processing pipelines; Components thereof
• CPC Class Codes: H04N 23/90 Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums

Abstract

An apparatus for controlling a network camera includes: a receiver configured to receive at least one image captured by the network camera monitoring a predetermined region; and at least one processor configured to implement: a detector which detects a plurality of trajectories in accordance with movement of each of a plurality of objects in the image; and a controller which extracts object feature information from each of the plurality of trajectories, and, if object feature information extracted from a trajectory corresponds to first and second objects, separate the trajectory into a first trajectory comprising first object feature information and a second trajectory comprising second object feature information.

Claims

1. An apparatus for controlling a network camera, the apparatus comprising:

a receiver configured to receive at least one image captured by the network camera monitoring a predetermined region; and

at least one processor configured to implement;

a detector which detects a plurality of trajectories in accordance with movement of each of a plurality of objects in the at least one image, the plurality of trajectories comprising a first trajectory and a second trajectory; and

a controller which extracts first object feature information from the first trajectory, extracts second object feature information from the second trajectory, compares the first object feature information with the second object feature information, and, in response to the first object feature information and the second object feature information being same, unites the first trajectory with the second trajectory.

2. The apparatus of claim 1, wherein each trajectory of the plurality of trajectories comprises:

an object identifier for identifying each object of the plurality of objects;

object image information regarding at least a portion of an image where the each object of the plurality of objects is displayed; and

object moving line information extracted based on the object image information.

3. The apparatus of claim 2, wherein the each trajectory of the plurality of trajectories is identified by the object identifier.

4. The apparatus of claim 2, wherein the first trajectory comprises a first object identifier and the second trajectory comprises a second object identifier, and wherein the controller assigns, to a third trajectory generated by uniting the first trajectory and the second trajectory, a third object identifier that is different from the first object identifier and the second object identifier.

5. The apparatus of claim 2, wherein the first trajectory comprises a first object identifier and the second trajectory comprises a second object identifier, and wherein the controller assigns the first object identifier to a third trajectory generated by uniting the first trajectory with the second trajectory.

6. The apparatus of claim 2, wherein a third trajectory, generated by uniting the first trajectory with the second trajectory, is associated with a third object feature information comprising a first cluster corresponding to a first object and a second cluster corresponding to a second object.

7. The apparatus of claim 2, wherein at least one of the first object feature information and the second object feature information is appearance information of an object extracted from the object image information.

8. The apparatus of claim 2, wherein the object moving line information is at least one of coordinate data and size data of the image of a plurality of object image frames constituting the object image information.

9. The apparatus of claim 1, wherein the controller generates a third trajectory by uniting the first trajectory with the second trajectory, and, in response to third object feature information of the third trajectory corresponding to a first object and a second object, separating the third trajectory into a fourth trajectory comprising fourth object feature information and a fifth trajectory comprising fifth object feature information.

10. The apparatus of claim 1, wherein the controller assigns an object identifier, different from a first object identifier of the first trajectory and a second object identifier of the second trajectory, to a third trajectory generated by uniting the first trajectory with the second trajectory.

11. The apparatus of claim 1, wherein the controller assigns an object identifier, which is same as one of a first object identifier of the first trajectory and a second object identifier of the second trajectory, to a third trajectory generated by uniting the first trajectory with the second trajectory.

12. The apparatus of claim 1, wherein the detector detects a third trajectory comprising the first object feature information from at least one image captured by another network camera connected to the network camera and monitoring another predetermined region, and

wherein the controller assigns, to the third trajectory, a first object identifier which is same as a second object identifier assigned to the first trajectory.

13. A method of controlling a network camera using at least one processor, the method comprising:

detecting a plurality of trajectories in accordance with movement of each of a plurality of objects from at least one image captured by the network camera monitoring a predetermined region, the plurality of trajectories comprising a first trajectory and a second trajectory;

extracting first object feature information from the first trajectory and second object feature information from the second trajectory;

in response to the first object feature information and the second object feature information being same, uniting the first trajectory with the second trajectory.

14. The method of claim 13, wherein each trajectory of the plurality of trajectories comprises:

an object identifier for identifying each object of the plurality of objects;

object image information regarding at least a portion of an image where the each object of the plurality of objects is displayed; and

object moving line information extracted based on the object image information.

15. The method of claim 14, wherein the first trajectory and the second trajectory are identified by object identifiers different from an object identifier of a third trajectory generated by uniting the first trajectory and the second trajectory.

16. The method of claim 14, wherein at least one of the first object feature information and the second object feature information is appearance information of an object extracted from the object image information.

17. The method of claim 14, wherein the object moving line information is at least one of coordinate data and size data of the image of a plurality of object image frames constituting the object image information.

18. The method of claim 13, wherein a third trajectory generated by uniting the first trajectory with the second trajectory is identified by an object identifier different from a first object identifier of the first trajectory and a second object identifier of the second trajectory.

19. The method of claim 13, further comprising:

detecting a third trajectory comprising the first object feature information from at least one image captured by another network camera connected to the network camera and monitoring another predetermined region, and

assigning, to the third trajectory, a first object identifier which is same as a second object identifier assigned to the first trajectory.

20. An apparatus for controlling a network camera, the apparatus comprising:

a receiver configured to receive at least one image captured by the network camera monitoring a predetermined region; and

at least one processor configured to implement;

a detector which detects a plurality of trajectories in accordance with movement of each of a plurality of objects in the image; and

a controller which extracts object feature information from each of the plurality of trajectories, and, in response to object feature information extracted from a trajectory corresponding to first and second objects, separate the trajectory into a first trajectory comprising first object feature information and a second trajectory comprising second object feature information,

wherein the detector detects another trajectory comprising the first object feature information from at least one image captured by another network camera connected to the network camera and monitoring another predetermined region, and

wherein the controller assigns, to the another trajectory, a first object identifier which is same as a second object identifier assigned to the first trajectory.