SYSTEM AND METHOD FOR MOTION DETECTION BASED ON OBJECT TRAJECTORY

• US 20100027845A1
• Filed: 07/31/2008
• Published: 02/04/2010
• Est. Priority Date: 07/31/2008
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Yeong-Taeg, Xu, Ning, Guan, Haiying
• Application Number:
  US12/183,973
• Publication Number:
  US 20100027845A1
• Time in Patent Office: Days
• US Class Current: 382/107
• CPC Class Codes: G06F 18/29 Graphical models, e.g. Bayesian networks
• CPC Class Codes: G06V 10/84 using probabilistic graphical models from image or video features, e.g. Markov models or Bayesian networks
• CPC Class Codes: G06V 40/28 Recognition of hand or arm movements, e.g. recognition of deaf sign language static hand signs G06V40/113

Abstract

A system and method for controlling a device via gesture recognition is disclosed. In one embodiment, the system comprises a video capture device configured to capture video of an object, a tracking module configured to track the position of the object, thereby defining a trajectory, a trajectory analysis module configured to determine whether or not a portion of the trajectory defines a recognized gesture, and a control module configured to change a parameter of the device when it is determined that the trajectory of the object defines a recognized gesture.

Claims

1. A device comprising:

a video capture device configured to capture video of an object;

a tracking module configured to track the position of the object, thereby defining a trajectory;

a trajectory analysis module configured to determine whether or not a portion of the trajectory defines a recognized gesture; and

a control module configured to change a parameter of the device when it is determined that the trajectory of the object defines a recognized gesture.

2. The device of claim 1, wherein the video capture device comprises a camera.

3. The device of claim 2, wherein the camera is sensitive to infrared light.

4. The device of claim 1, wherein the device comprises a television, a DVD player, a radio, a set-top box, a music player, or a video player.

5. The device of claim 1, wherein the object comprises a human hand.

6. The device of claim 1, wherein the tracking module is configured to perform object recognition.

7. The device of claim 1, wherein the trajectory comprises a sequence of ordered points.

8. The device of claim 1, wherein the recognized gesture comprises at least one of a circular shape or a waving motion.

9. The device of claim 23, wherein the parameter of the device is a channel, a station, a volume, a track, or a power.

10. A method of changing a parameter of a device, the method comprising:

receiving video of an object;

defining a trajectory of the object, based on the received video;

determining if the trajectory of the object defines a recognized gesture; and

changing a parameter of the device when it is determined that the trajectory of the object defines a recognized gesture.

11. The method of claim 10, wherein defining a trajectory of the object comprises:

analyzing a plurality of frames of the video to determine, for each of the plurality of frames, the portion of the frame which shows the object; and

defining a center location for each of the plurality of frames based, at least, on the portion of the frame which shows the object.

12. The method of claim 11, wherein defining a center location for each of the plurality of frames comprises defining a motion center location for the object.

13. A device comprising:

means for receiving video of an object;

means for defining a trajectory of the object, based on the received video;

means for determining if the trajectory of the object defines a recognized gesture; and

means for changing a parameter of the device when it is determined that the trajectory of the object defines a recognized gesture.

14. A programmable storage device comprising code which, when executed, causes a processor to perform a method of changing a parameter of a device, the method comprising:

receiving video of an object;

defining a trajectory of the object, based on the received video;

determining if the trajectory of the object defines a recognized gesture; and

changing a parameter of the device when it is determined that the trajectory of the object defines a recognized gesture.