System and method for controlling fixtures based on tracking data

• US 9,055,226 B2
• Filed: 01/07/2013
• Issued: 06/09/2015
• Est. Priority Date: 08/31/2010
• Status: Active Grant

• Current Assignee: CAST Group of Companies, Inc.
• Original Assignee: CAST Group of Companies, Inc.
• Inventors: Densham, Gilray, Eichel, Justin, Law, Kwok Wai William, Qin, Weibo, von Frankenberg, Florentin Christoph
• Primary Examiner(s): Vaughn, Jr., William C
• Assistant Examiner(s): PEREZ FUENTES, LUIS M
• Application Number:
  US13/735,785
• Publication Number:
  US 20130128054A1
• Time in Patent Office: 883 Days
• Field of Search: 348/169
• US Class Current: 1/1
• CPC Class Codes: A43B 1/0054 provided with magnets, magnetic parts or magnetic substances
• CPC Class Codes: A61B 5/0002 Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network A61B5/07 takes precedence; transmission systems for measured values G08C; transmission H04B; transmission of digital information H04L; wireless communication networks H04W
• CPC Class Codes: A61B 5/112 Gait analysis
• CPC Class Codes: A63B 24/0021 Tracking a path or terminating locations
• CPC Class Codes: G02B 7/32 using active means, e.g. light emitter including both an active and a passive focus detecting device G02B7/285; using ultrasound G02B7/40
• CPC Class Codes: G03B 21/53 Means for automatic focusing, e.g. to compensate thermal effects
• CPC Class Codes: H04N 23/69 Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
• CPC Class Codes: H04N 5/2224 related to virtual studio applications
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources

Abstract

Systems and methods are provided for using tracking data to control the functions of an automated fixture. Examples of automated fixtures include light fixtures and camera fixtures. A method includes obtaining a first position of a tracking unit. The tracking unit includes an inertial measurement unit and a visual indicator configured to be tracked by a camera. A first distance is computed between the automated fixture and the first position and it is used to set a function of the automated fixture to a first setting. A second position of the tracking unit is obtained. A second distance between the automated fixture and the second position is computed, and the second distance is used to set the function of the automated fixture to a second setting.

Claims

1. A method for controlling a function of an automated fixture comprising:

obtaining a first position of a tracking unit, the tracking unit comprising a light source and the obtaining the first position comprising;

obtaining a first set of images of the light source, the images captured by at least two or more cameras;

determining a position of the light source by determining a pixel location of the light source in the first set of images and applying triangulation to the first set of images;

establishing the position of the light source as the first position of the tracking unit;

computing a first distance between the automated fixture and the first position of the tracking unit, the computing the first distance comprising computing a difference between coordinates of the automated fixture and coordinates of the first position of the tracking unit;

using the first distance to set a function of the automated fixture to a first setting, wherein interaction of the automated fixture at the first position of the tracking unit is characterized by a parameter value;

obtaining a second position of the tracking unit, the obtaining the second position comprising;

obtaining a second set of images of the light source;

determining a second position of the light source by determining another pixel location of the light source in the second set of images and applying triangulation to the second set of images;

establishing the second position of the light source as the second position of the tracking unit;

computing a second distance between the automated fixture and the second position of the tracking unit, the computing the second distance comprising computing a difference between the coordinates of the automated fixture and coordinates of the second position of the tracking unit; and

using the second distance and the parameter value to set the function of the automated fixture to a second setting and wherein interaction of the automated fixture at the second position of the tracking unit is also characterized by the parameter value.

2. The method of claim 1 further comprising, after obtaining the first position, computing a control value to point the automated fixture at the first position;

and, after obtaining the second position, computing a control value to point the automated fixture at the second position.

3. The method of claim 2 wherein the automated fixture is a fixture that projects light.

4. The method of claim 3 wherein the function is a zoom function;

the parameter value is a given light beam diameter; and

the first setting of the zoom function is set to provide the given light beam diameter projected at the first position, and the second setting of the zoom function is set to provide the same light beam diameter projected at the second position.

5. The method of claim 3 wherein the function is a zoom function;

the parameter value is a given light intensity; and

the first setting of the zoom function is set to provide the given light intensity projected at the first position, and the second setting of the zoom function is set to provide the same light intensity projected at the second position.

6. The method of claim 3 wherein the automated fixture is a multimedia projector.

7. The method of claim 3 wherein the function is an iris function;

the parameter value is a given light beam diameter; and

the first setting of the iris function is set to provide the given light beam diameter projected at the first position, and the second setting of the iris function is set to provide the same light beam diameter projected at the second position.

8. The method of claim 2 wherein the automated fixture projects light and the function comprises a zoom function and an iris function.

9. The method of claim 8 wherein the zoom function and the iris function are set to maintain a constant beam diameter projected at the first position and the second position.

10. The method of claim 9 wherein the iris function setting is changed when the zoom function is set to a maximum or minimum value, and a beam diameter associated with the maximum or minimum value of the zoom function needs to be further increased or decreased to provide the constant beam diameter.

11. The method of claim 2 wherein the automated fixture is a camera fixture.

12. The method of claim 11 wherein the function is a zoom function.

13. The method of claim 12 wherein the parameter value is a given field of view and the first setting of the zoom function is set to provide the given field of view at a first plane that includes the first position, and the second setting of the zoom function is set to provide the same field of view at a second plane that includes the second position.

14. The method of claim 11 wherein the function is a focus function.

15. The method of claim 14 wherein the parameter value is a focus value and the first setting of the focus function is set to provide the focus level at a first plane that includes the first position, and the second setting of the focus function is set to provide the same focus level at a second plane that includes the second position.

16. The method of claim 1 wherein the difference between the first setting and the second setting is proportional to the difference between the first distance and the second distance.

17. The method of claim 16 wherein the difference between the first setting and the second setting is linearly proportional to the difference between the first distance and the second distance.

18. The method of claim 1 wherein the automated fixture is an audio fixture.

19. A computing system comprising a processor, a communication device and a non-transitory computer readable medium, the non-transitory computer readable medium comprising executable instructions for controlling a function of an automated fixture, the executable instructions comprising:

obtaining a first position of a tracking unit, the tracking unit comprising a light source and the obtaining the first position comprising;

obtaining a first set of images of the light source, the images captured by at least two or more cameras;

determining a position of the light source by determining a pixel location of the light source in the first set of images and applying triangulation to the first set of images;

establishing the position of the light source as the first position of the tracking unit;

computing a first distance between the automated fixture and the first position of the tracking unit, the computing the first distance comprising computing a difference between coordinates of the automated fixture and coordinates of the first position of the tracking unit;

using the first distance to set a function of the automated fixture to a first setting, wherein interaction of the automated fixture at the first position of the tracking unit is characterized by a parameter value;

obtaining a second position of the tracking unit, the obtaining the second position comprising;

obtaining a second set of images of the light source;

determining a second position of the light source by determining another pixel location of the light source in the second set of images and applying triangulation to the second set of images;

establishing the second position of the light source as the second position of the tracking unit;

computing a second distance between the automated fixture and the second position of the tracking unit, the computing the second distance comprising computing a difference between the coordinates of the automated fixture and coordinates of the second position of the tracking unit; and

using the second distance and the parameter value to set the function of the automated fixture to a second setting and wherein interaction of the automated fixture at the second position of the tracking unit is also characterized by the parameter value.

20. The computing system of claim 19 wherein the executable instructions further comprise:

after obtaining the first position, computing a control value to point the automated fixture at the first position; and

, after obtaining the second position, computing a control value to point the automated fixture at the second position.

21. The computing system of claim 20 wherein the automated fixture is a fixture that projects light.

22. The computing system of claim 21 wherein the function is a zoom function;

the parameter value is a given light beam diameter; and

the first setting of the zoom function is set to provide the given light beam diameter projected at the first position, and the second setting of the zoom function is set to provide the same light beam diameter projected at the second position.

23. The computing system of claim 21 wherein the function is a zoom function;

the parameter value is a given light intensity; and

the first setting of the zoom function is set to provide the given light intensity projected at the first position, and the second setting of the zoom function is set to provide the same light intensity projected at the second position.

24. The computing system of claim 19 wherein the automated fixture is a multimedia projector that projects light.

25. The computing system of claim 21 wherein the function is an iris function;

the parameter value is a given light beam diameter; and

the first setting of the iris function is set to provide the given light beam diameter projected at the first position, and the second setting of the iris function is set to provide the same light beam diameter projected at the second position.

26. The computing system of claim 20 wherein the automated fixture projects light and the function comprises a zoom function and an iris function.

27. The computing system of claim 26 wherein the zoom function and the iris function are set to maintain a constant beam diameter projected at the first position and the second position.

28. The computing system of claim 27 wherein the iris function setting is changed when the zoom function is set to a maximum or minimum value, and a beam diameter associated with the maximum or minimum value of the zoom function needs to be further increased or decreased to provide the constant beam diameter.

29. The computing system of claim 19 wherein the automated fixture is a camera fixture.

30. The computing system of claim 29 wherein the function is a zoom function.

31. The computing system of claim 30 wherein the parameter value is a given field of view and the first setting of the zoom function is set to provide the given field of view at a first plane that includes the first position, and the second setting of the zoom function is set to provide the same field of view at a second plane that includes the second position.

32. The computing system of claim 29 wherein the function is a focus function.

33. The computing system of claim 32 wherein the parameter value is a focus value and the first setting of the focus function is set to provide the focus level at a first plane that includes the first position, and the second setting of the focus function is set to provide the same focus level at a second plane that includes the second position.

34. The computing system of claim 19 wherein the difference between the first setting and the second setting is proportional to the difference between the first distance and the second distance.

35. The computing system of claim 34 wherein the difference between the first setting and the second setting is linearly proportional to the difference between the first distance and the second distance.

36. The computing system of claim 19 wherein the automated fixture is an audio fixture.

37. A non-transitory computer readable medium comprising executable instructions for controlling a function of an automated fixture, the executable instructions configured to be executed by a processor, the executable instructions comprising:

obtaining a first position of a tracking unit, the tracking unit comprising a light source and the obtaining the first position comprising;

obtaining a first set of images of the light source, the images captured by at least two or more cameras;

determining a position of the light source by determining a pixel location of the light source in the first set of images and applying triangulation to the first set of images;

establishing the position of the light source as the first position of the tracking unit;

computing a first distance between the automated fixture and the first position of the tracking unit, the computing the first distance comprising computing a difference between coordinates of the automated fixture and coordinates of the first position of the tracking unit;

using the first distance to set a function of the automated fixture to a first setting, wherein interaction of the automated fixture at the first position of the tracking unit is characterized by a parameter value;

obtaining a second position of the tracking unit, the obtaining the second position comprising;

obtaining a second set of images of the light source;

determining a second position of the light source by determining another pixel location of the light source in the second set of images and applying triangulation to the second set of images;

establishing the second position of the light source as the second position of the tracking unit;

computing a second distance between the automated fixture and the second position of the tracking unit, the computing the second distance comprising computing a difference between the coordinates of the automated fixture and coordinates of the second position of the tracking unit; and

using the second distance and the parameter value to set the function of the automated fixture to a second setting and wherein interaction of the automated fixture at the second position of the tracking unit is also characterized by the parameter value.