Method for interacting with computer using a video camera image on screen and system thereof

• US 20040032398A1
• Filed: 08/16/2003
• Published: 02/19/2004
• Est. Priority Date: 08/14/2002
• Status: Abandoned Application

• Current Assignee: Natural Asa
• Original Assignee: Natural Asa
• Inventors: Taub, Gilad, Ariel, Yedidya
• Application Number:
  US10/641,966
• Publication Number:
  US 20040032398A1
• Time in Patent Office: Days
• US Class Current: 345/168
• CPC Class Codes: G06F 3/0426 tracking fingers with respect to a virtual keyboard projected or printed on the surface virtual keyboards on touch screens G06F3/04886

Abstract

A method, device, and system for facilitating the use of and data entry into a computer having a data entry device such as a keyboard and a display device such as a monitor. A camera is disposed above the keyboard and captures a moving image of the keyboard. The image of the keyboard is shown on th display device, preferably in a small portion of the display device. In this way, a person can look at the display device and see both the subject matter he is typing or entering and the keyboard at the same time. An image of the user'"'"'s hands is made transparent and overlaid onto the image of the keyboard. The image of the keyboard can be manipulated, e.g., made smaller or larger, corrected for parallax and movement, the characters on the keys can be changed, and the like.

Claims

1. A method of facilitating human interaction with a computer having a keyboard and a display device, comprising the steps of:

a) identifying registration marks in a reference-image from an initialization video signal of a keyboard,

b) relating the reference image to a predetermined graphic keyboard representation using the identified registration marks;

c) processing data from post-initialization images of a keyboard in use by a user, the data including at least one of;

i) at least one registration mark, and ii) differences between the reference-image and the post-initialization images;

d) overlaying at least a portion of the data processed in step c) onto the keyboard representation for at least a plurality of the post-initialization images; and

e) transmitting the overlaid portion to a graphics display device.

2. The method according to claim 1, wherein said identifying step includes the step of image processing.

3. The method according to claim 1, wherein said relating step includes the step of selecting a representation from a predetermined library.

4. The method according to claim 1, wherein said processing step includes at least one of the following operations:

c1) separating the non-reference image elements from reference-image elements by removing background elements;

c2) deforming isolated contiguous aggregates of non-reference image elements proportionally to a predetermined distortion of the reference image;

c3) deforming edges of isolated contiguous aggregates of non-reference image elements proportionally to a predetermined distortion of the reference image; and

c4) tracking changes in reference-image registration mark location.

5. The method according to claim 4, wherein processing of more than one of said operations c1)-c4) is performed substantially asynchronously.

6. The method according to claim 4, wherein said deforming operations c2) and c3) includes parameters necessary to transform a reference-image keyboard representation associated with the initialization registration marks into a substantially rectangular representation—

thereby facilitating correction for angular parallax in the reference-image and in the images.

7. The method according to claim 1, wherein said overlaying step includes inclusion of registration mark normalized post-initialization video signal data edges onto the keyboard representation.

8. The method according to claim 1, wherein said overlaying step includes the step of including registration mark-normalized post-initialization video signal data semi-transparent contiguous portions onto the keyboard representation.

9. The method according to claim 1, wherein said overlaying step includes accepting a command signal and using the command to include a predetermined character set onto to keys of the keyboard representation.

10. The method according to claim 1, wherein said transmitting step includes transforming the representation and overlay into a region of the display device—

thereby facilitating a user of a keyboard of a computer system associated with the display device to observe manual interactions with the keyboard on the display device.

11. The method according to claim 1, wherein said transmitting step includes the step of transforming the representation and overlay into a region of the display device into virtual buttons on the display device corresponding to the keys of the keyboard, thereby facilitating a user of the keyboard to use the keyboard as a mouse for activating the virtual buttons on the display device corresponding to keys of the imaged keyboard.

12. A method according to claim 1, wherein the differences between the reference image and the post-initialization images includes at least one of movement of the keyboard and placement of the user'"'"'s hands on the keyboard.

13. A software-driven application keyboard imaging method comprising the steps of:

taking data from a video stream showing a keyboard associated with a computer and a display device; and

transposing a graphic equivalent of that data from the video stream onto a portion of the display device,

wherein an image of the keyboard is depicted on the display device.

14. The method according to claim 13, wherein said transposing step further comprising the steps of:

calibrating images from the video stream in order to identify the viewing angle between the real time images provided from the camera and the keyboard that it is pointed at and focused on;

using at least one of photogrammetric and homological algorithms to accomplish the keyboard validation;

transforming the validated keyboard into an abstract animated keyboard image; and

overlaying the abstract animated keyboard image onto a portion of the display device.

15. The method according to claim 13, wherein, after a user begins to type on the keyboard, the images include edge detected abstracted animated renditions of at least one portion of one of the user'"'"'s hands, the hand portion being rendered as a substantially transparent outline and superimposed onto the image of the keyboard on the display device.

16. A method of facilitating human interaction with a computer having a data entry device and a display device, comprising the steps of:

projecting an image of the data entry device as the data entry device is being used onto a portion of the display device,

wherein the user can see both the image of the data entry device and the subject matter being created on the display device by the user'"'"'s manipulation of the data entry device substantially simultaneously.

17. A method according to claim 16, further comprising the steps of:

providing registration marks on the data entry device to act as reference position indicators; and

adjusting the image of the data entry device according to the registration marks.

18. A method according to claim 16, further comprising the steps of:

providing at least one model indicator on the data entry device to identify the model of data entry device;

comparing the model indicator to a plurality of stored model indicators each indicative of a different data entry device; and

in said projecting step, projecting an image of the data entry device indicated by the model indicator onto the display device.

19. A method according to claim 17, further comprising the steps of:

providing at least one model indicator on the data entry device to identify the model of data entry device;

comparing the model indicator to a plurality of stored model indicators each indicative of a different data entry device; and

in said projecting step, projecting an image of the data entry device indicated by the model indicator onto the display device.

20. A method according to claim 16, further comprising the step of eliminating background elements surrounding the user'"'"'s hands over the data entry device from the data entry device image.

21. A method according to claim 16, further comprising the step of altering the data entry device image in accordance with user instructions.

22. A method according to claim 21, wherein the data entry device is a keyboard and said altering step comprises the step of changing characters on at least a portion of the keys on the image of the keyboard, wherein typing on the actual keyboard will cause the generation of the changed characters on the display device.

23. A method according to claim 16, further comprising the step of superimposing an image of least a portion of at least one of the user'"'"'s hands onto the data entry device image as the hands are positioned over the actual data entry device.

24. A method according to claim 23, wherein said superimposing step further comprises the step of making the superimposed image substantially transparent over the data entry device image.

25. A system for facilitating human interacting with a computer having a display device and a keyboard, comprising;

a moving image camera disposed over and pointed at the keyboard, said camera generating a video signal indicative of the keyboard;

means for displaying data from said video signal of the keyboard onto the display device as an image of the keyboard.

26. A system according to claim 25, further comprising:

registration marks provided in association with the keyboard; and

image repairing means for correcting distortion of said image of the keyboard in said video signal.

27. A system according to claim 26, wherein said image repairing means corrects for at least one of parallax and movement of the keyboard from an initial position.

28. A system according to claim 25, the computer including a CPU, wherein said means for displaying said video signal comprises software disposed on the CPU of the computer.

29. A system according to claim 25, further comprising a CPU separate from the computer, wherein said means for displaying said video signal comprises software disposed on said CPU.

30. A system according to claim 25, said means for displaying said video signal further comprises image altering means for changing the appearance of said image of the keyboard by altering said video signal.

31. A system according to claim 30, wherein said image altering means changes at least some of the characters on the keys of said image of the keyboard.

32. A system according to claim 30, wherein said image altering means eliminates background elements surrounding the user'"'"'s hands above the keyboard in said image of the keyboard.

33. A system according to claim 30, wherein said image altering means makes a user'"'"'s hands disposed over the keyboard transparent in said image of the keyboard.

34. A system according to claim 30, wherein said image altering means transforms keys of said image of the keyboard into hyperlinks.

35. A system according to claim 25, further comprising a camera holder attached to the display device, said camera being attached to said camera holder above the keyboard and pointing downward at the keyboard.

36. A system according to claim 25, further comprising:

a second camera disposed on the keyboard pointing upward at the user'"'"'s hands, said second camera generating a second video signal indicative of at least a portion of at least one of the user'"'"'s hands; and

means for displaying said second video signal onto the display device.

37. A system according to claim 36, wherein said means for displaying said second video signal transforms said second video signal into a transparent image of at least a portion of at least one of the user'"'"'s hands and overlays said transparent image onto said image of the keyboard.

38. A system for facilitating use of a computer, comprising:

a computer including a display device and a keyboard;

a moving image camera disposed near and pointed at said keyboard, said camera generating a video signal indicative of said keyboard;

means for displaying said video signal of said keyboard onto said display device as an image of said keyboard.

39. A system according to claim 38, further comprising:

registration marks provided on a surface of said keyboard; and

image repairing means for correcting distortion of said image of said keyboard in said video signal.

40. A system according to claim 39, wherein said image repairing means corrects for at least one of parallax and movement of said keyboard from an initial position.

41. A system according to claim 38, said computer including a CPU, wherein said means for displaying said video signal comprises software disposed on said CPU of said computer.

42. A system according to claim 38, further comprising a CPU separate from said computer, wherein said means for displaying said video signal comprises software disposed on said CPU.

43. A system according to claim 38, said means for displaying said video signal further comprises image altering means for changing the appearance of said image of said keyboard by altering said video signal.

44. A system according to claim 43, wherein said image altering means changes at least some of the characters on the keys of said image of said keyboard.

45. A system according to claim 43, wherein said image altering means eliminates background elements surrounding the user'"'"'s hands above said keyboard from said image of said keyboard.

46. A system according to claim 43, wherein said image altering means makes a user'"'"'s hands disposed over said keyboard transparent in said image of said keyboard.

47. A system according to claim 43, wherein said image altering means transforms keys of said image of said keyboard into hyperlinks.

48. A system according to claim 38, further comprising a camera holder attached to said display device, said camera being attached to said camera holder above said keyboard and pointing downward at said keyboard.

49. A system according to claim 38, further comprising:

a second camera disposed on said keyboard pointing upward at the user'"'"'s hands, said second camera generating a second video signal indicative of at least a portion of at least one of the user'"'"'s hands; and

means for displaying said second video signal onto said display device.

50. A system according to claim 49, wherein said means for displaying said second video signal transforms said second video signal into a transparent image of at least a portion of at least one of the user'"'"'s hands and overlays said transparent image onto said image of said keyboard.