Image capture device calibration

• US 10,038,895 B2
• Filed: 01/15/2013
• Issued: 07/31/2018
• Est. Priority Date: 01/15/2013
• Status: Active Grant

• Current Assignee: Disney Enterprises Incorporated (The Walt Disney Company)
• Original Assignee: Disney Enterprises Incorporated (The Walt Disney Company)
• Inventors: Beardsley, Paul, Grundhoefer, Anselm, Reetz, Daniel
• Primary Examiner(s): Tsai, Tsung-Yin
• Application Number:
  US13/742,256
• Publication Number:
  US 20140198221A1
• Time in Patent Office: 2,023 Days
• CPC Class Codes: G01B 11/002 for measuring two or more coordinates
• CPC Class Codes: G01B 21/042 Calibration or calibration artifacts G01B3/30, G01B9/02072 take precedence
• CPC Class Codes: G01B 7/004 for measuring coordinates of points
• CPC Class Codes: H04N 17/002 for television cameras

Abstract

A three-dimensional coordinate position of a calibration device is determined. Further, a code is emitted to an image capture device. The code indicates the three-dimensional coordinate position of the calibration device. In addition, an image of light emitted from the calibration device is captured. The light includes the code. An image capture device three-dimensional coordinate position of the calibration device is calibrated according to the real world three-dimensional coordinate position of the calibration device indicated by the code.

Claims

1. An image capture device comprising:

an image capture sensor that captures an image of light emitted from a calibration device, the light including a code that indicates a set of real world three-dimensional coordinate positions of the calibration device; and

a controller that calibrates at least one intrinsic parameter and at least one extrinsic parameter according to the set of real world three-dimensional coordinate positions of the calibration device indicated by the code.

2. The image capture device of claim 1, further comprising a transmitter that sends diagnostic data to the calibration device based upon the calibration.

3. The image capture device of claim 1, wherein the controller decodes the code to determine the real world three-dimensional coordinate position of the calibration device.

4. The camera calibration device of claim 1, further comprising a demodulator that demodulates the light from the calibration device to obtain the code.

5. The camera calibration device of claim 4, further comprising a decoder that decodes the code to determine the set of real world three-dimensional coordinate positions of the calibration device.

6. A system comprising:

a calibration device that includes a controller and at least one light emitter, the controller determining a three-dimensional coordinate position of the calibration device, the at least one light emitter emitting a code to an image capture device, the code indicating the three-dimensional coordinate position of the calibration device; and

an image capture device that includes an image capture sensor and a controller, the image capture sensor capturing an image of light emitted from a calibration device, the light including the code, the controller calibrating an image capture device three-dimensional coordinate position of the calibration device according to the real world three-dimensional coordinate position of the calibration device indicated by the code.

7. The system of claim 6, wherein the at least one light emitter is at least one LED emitter.

8. The system of claim 6, wherein the at least one light emitter is a display screen of the calibration device.

9. The system of claim 6, wherein the calibration device further includes a receiver that receives diagnostic data from the image capture device after the image capture device performs calibration based upon the code.

10. The system of claim 9, wherein the three-dimensional coordinate position is adjusted based upon the diagnostic data.

11. The system of claim 6, wherein the calibration device further includes an input receiver that receives an input indicating data in addition to the three-dimensional coordinate position.

12. The system of claim 11, wherein the code includes the input in addition to the three-dimensional coordinate position.

13. The system of claim 6, wherein the image capture device further includes a transmitter that sends diagnostic data to the calibration device based upon the calibration.

14. The system of claim 6, wherein the controller decodes the code to determine the real world three-dimensional coordinate position of the calibration device.

15. A method comprising:

determining a three-dimensional coordinate position of a calibration device;

emitting a code to an image capture device, the code indicating the three-dimensional coordinate position of the calibration device;

capturing an image of light emitted from the calibration device, the light including the code; and

calibrating an image capture device three-dimensional coordinate position of the calibration device according to the real world three-dimensional coordinate position of the calibration device indicated by the code.

16. The method of claim 15, wherein the at least one light emitter is at least one LED emitter.

17. The method of claim 15, wherein the at least one light emitter is a display screen of the calibration device.

18. The method of claim 15, wherein the calibration device further includes a receiver that receives diagnostic data from the image capture device after the image capture device performs calibration based upon the code.

19. The method of claim 18, further comprising adjusting the three-dimensional coordinate position based upon the diagnostic data.

20. The method of claim 15, wherein the calibration device further includes an input receiver that receives an input indicating data in addition to the three-dimensional coordinate position.

21. The method of claim 20, wherein the code includes the input in addition to the three-dimensional coordinate position.

22. The method of claim 15, further comprising sending diagnostic data to the calibration device based upon the calibration.

23. The method of claim 15, further comprising decoding the code to determine the real world three-dimensional coordinate position of the calibration device.