Gesture Identification Using A Structured Light Pattern

• US 20090189858A1
• Filed: 09/30/2008
• Published: 07/30/2009
• Est. Priority Date: 01/30/2008
• Status: Abandoned Application

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Parker, Jeff, Lev, Jeff, Moore, Earl
• Application Number:
  US12/242,092
• Publication Number:
  US 20090189858A1
• Time in Patent Office: Days
• US Class Current: 345/158
• CPC Class Codes: G06F 3/017 Gesture based interaction, e.g. based on a set of recognized hand gestures interaction based on gestures traced on a digitiser G06F3/04883
• CPC Class Codes: G06F 3/0325 using a plurality of light emitters or reflectors or a plurality of detectors forming a reference frame from which to derive the orientation of the object, e.g. by triangulation or on the basis of reference deformation in the picked up image
• CPC Class Codes: G06F 3/0346 with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors

Abstract

In at least some embodiments, a computer system includes a processor. The computer system also includes a light source. The light source provides a structured light pattern. The computer system also includes a camera coupled to the processor. The camera captures images of the structured light pattern. The processor receives images of the structured light pattern from the camera and identifies a user gesture based on distortions to the structured light pattern.

Claims

1. A computer system, comprising:

a processor;

a light source, the light source provides a structured light pattern; and

a camera coupled to the processor, the camera captures images of the structured light pattern,

wherein the processor receives images of the structured light pattern from the camera and identifies a user gesture based on distortions to the structured light pattern.

2. The computer system of claim 1 further comprising a memory that stores a gesture interaction program for execution by the processor, wherein the gesture interaction program correlates the user gesture with a function of the computer system.

3. The computer system of claim 1 wherein the light source is selected from the group consisting of a manually-controlled light source, a processor-controlled light source and a detection circuit controlled light source.

4. The computer system of claim 1 wherein the gesture comprises at least one item selected from the group consisting of an object, an object'"'"'s position, an object'"'"'s orientation and an object'"'"'s motion.

5. The computer system of claim 1 wherein the camera records infrared light images of the structured light pattern.

6. The computer system of claim 1 wherein the camera selectively records infrared light images of the structured light pattern and visible light images of an object within the structured light pattern.

7. The computer system of claim 6 wherein at least some of the visible light images are displayed to a user via a graphic user interface (GUI) to enable the user to interact with the gesture interaction program.

8. The computer system of claim 1 wherein the gesture interaction program enables the same gesture to perform different functions depending on application.

9. The computer system of claim 1 wherein the computer system is a laptop computer.

10. A method for a computer system, comprising:

generating a structured light pattern;

identifying a gesture based on changes to the structured light pattern;

correlating the gesture with a function of the computer system; and

performing the function.

11. The method of claim 10 further comprising comparing changes to the structured light pattern with one of a plurality of gesture templates to identify the gesture.

12. The method of claim 10 further comprising capturing infrared light images of the structured light pattern to detect the changes to the structured light pattern.

14. The method of claim 10 further comprising controlling a camera to selectively capture infrared light images of the structured light pattern and visible light images of an object within the structured light pattern.

15. The method of claim 10 further comprising creating a gesture template and associating the gesture template with the function.

16. The method of claim 10 wherein identifying the gesture comprises identifying at least one item selected from the group consisting of an object within the structured light pattern, an object'"'"'s position within the structured light pattern, an object'"'"'s orientation within the structured light pattern and an object'"'"'s motion within the structured light pattern.

17. The method of claim 10 further comprising enabling the gesture to perform different functions depending on application.

13. The method of 10 further comprising capturing visible light images of an object within the structured light pattern and displaying the captured visible light images to a user.

18. A computer-readable medium comprising software that causes a processor of a computer system to:

identify a gesture based on changes to a structured light pattern;

correlate the gesture with a function of the computer system; and

perform the function.

19. The computer-readable medium of claim 18 wherein the software further causes the processor to identify the gesture by identifying at least one item selected from the group consisting of an object within the structured light pattern, an object'"'"'s position within the structured light pattern, an object'"'"'s orientation within the structured light pattern and an object'"'"'s motion within the structured light pattern.

20. The computer-readable medium of claim 18 wherein the software further causes the processor to correlate the gesture with a different function depending on application.

21. The computer-readable medium of claim 18 wherein the software further causes the processor to create a gesture template based on input from a user and to associate the gesture template with the function.