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1. WO2020201764 - METHOD AND APPARATUS FOR GENERATING THREE DIMENSIONAL IMAGES

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

Claims

1 . A method of generating a video image, the method comprising:

capturing a first set of video image data of a region of record including an object, the first set of video image data comprising a time sequence showing rotation of the object at a range of angles of view;

capturing rotational position data identifying the rotational position of the object at different times in the video image data time sequence;

processing the first set of video image data to extract a portion of the video image data comprising the time sequence and including the object;

sending the portion of the video image data and the rotational position data to a display device;

combining the portion of the video image data with a second set of video image data to form a composite video image including the object; and

displaying the composite video image on the display device; and

wherein the portion of the video image data is displayed in the composite video image at a fixed position within the second set of video image data and a variable orientation, the variable orientation being based at least in part on movement of the display device; and

the method further comprising:

determining an angle of view of the display device relative to the fixed position;

using the rotational position data to identify a time in the time sequence corresponding to the determined angle of view; and

displaying the composite video image comprising the portion of the video image data at the identified time in the time sequence.

2. The method according to claim 1 , wherein, when the determined angle of view of the display device changes, the displayed composite video image comprising the portion of the video image data moves through the time sequence in a forward or a reverse direction.

3. The method according to claim 1 or claim 2, wherein the time sequence shows

rotation of the object through a full 360° range of angles of view.

4. The method according to any preceding claim, wherein the variable orientation is varied to display the portion of video image data with a fixed orientation relative to the display device.

5. The method according to claim 4, wherein a first camera is used to capture the first set of video image data and the variable orientation is varied to display the portion of the video image data with an orientation relative to the display device which corresponds to the orientation of the region of record relative to the first camera.

6. The method according to any preceding claim, wherein the variable orientation is about a vertical axis.

7. The method according to claim 5, wherein the variable orientation is about both vertical and horizontal axes.

8. The method according to any preceding claim, wherein the first portion of video

image data is displayed overlying the second set of video image data.

9. The method according to any preceding claim, wherein the second set of video image data is captured by a camera incorporated in the display device.

10. The method according to any preceding claim, wherein the composite video image comprises an augmented reality video image.

1 1 . The method according to any preceding claim, further comprising storing the portion of the video image data; and

subsequently recovering the portion of the video image data from storage before sending the portion of the video image data to the display device.

12. The method according to any one of claims 1 to 1 1 , wherein the portion of the video image data is streamed to the display device.

13. The method according to any preceding claim, wherein the region of record

comprises a colour background and the processing removes the colour background.

14. The method according to claim 13, wherein the background comprises a green

screen, and the processing comprises a chroma key process.

15. The method according to claim 14, wherein the processing comprises using the chroma key process to generate an alpha channel representation of the first set of video image data, and then uses the alpha channel representation to extract the portion of the video image data including the object.

16. The method according to any preceding claim, wherein the portion of the video image data is two-dimensional '2D' video.

17. A method of displaying a video image, the method comprising:

receiving first video image data of a region of record including an object, the first video image data comprising a time sequence showing rotation of the object at a range of angles;

receiving rotational position data identifying the rotational position of the object at different times in the video image data time sequence;

combining the first video image data with a second set of video image data to form a composite video image; and

displaying the composite video image on a display device;

wherein the first video image data is displayed in the composite video image at a fixed position within the second set of video image data and a variable orientation, the variable orientation being based at least in part on movement of the display device; and

the method further comprising:

determining an angle of view of the display device relative to the fixed position;

using the rotational position data to identify a time in the time sequence corresponding to the determined angle of view; and

displaying the composite video image comprising the portion of the video image data at the identified time in the time sequence.

18. The method according to claim 17, wherein, when the determined angle of view of the display device changes, the displayed composite video image comprising the portion of the video image data moves through the time sequence in a forward or a reverse direction.

19. The method according to claim 17 or claim 1 8, wherein the time sequence shows rotation of the object through a full 360° range of angles of view.

20. The method according to any one of claims 17 to 1 9, wherein the variable orientation is varied to display the first video image data with a fixed orientation relative to the display device.

21 . The method according to claim 20, wherein the first video image data was captured using a first camera capturing a video image data of a region of record, and the variable orientation is varied to display the first video image data with an orientation relative to the display device which corresponds to the orientation of the region of record relative to the first camera.

22. The method according to any one of claims 17 to 21 , wherein the variable orientation is about a vertical axis.

23. The method according to claim 22, wherein the variable orientation is about both vertical and horizontal axes

24. The method according to any one of claims 17 to 23, wherein the first video image data is displayed overlying the second set of video image data.

25. The method according to any one of claims 17 to 24, wherein the second set of video image data is captured by a camera incorporated in the display device.

26. The method according to any one of claims 17 to 25, wherein the composite video image comprises an augmented reality video image.

27. The method according to any one of claims 17 to 26, wherein the first video image data is two-dimensional '2D' video.

28. A system for generating a video image, the system comprising:

a video image capture device arranged to capture a first set of video data of a region of record including an object, the first set of video image data comprising a time sequence showing rotation of the object at a range of angles;

rotational position data capture means arranged to capture rotational position data identifying the rotational position of the object at different times in the video image data time sequence;

image processing means arranged to process the first set of image data to extract a portion of the image data including the object;

sending means arranged to send the portion of the image data to a display device;

the display device comprising:

combining means arranged to combine the portion of the image data with a second set of image data to form a composite video image including the object; and display means arranged to display the composite video image on the display device;

wherein the portion of the image data is displayed in the composite image at a fixed position within the second set of image data and a variable orientation, the variable orientation being based at least in part on movement of the display device; and

the display device being arranged to:

determine an angle of view of the display device relative to the fixed position; use the rotational position data to identify a time in the time sequence corresponding to the determined angle of view; and

display the composite video image comprising the portion of the video image data at the identified time in the time sequence.

29. The system according to claim 28, wherein, when the determined angle of view of the display device changes, the displayed composite video image comprising the portion of the video image data moves through the time sequence in a forward or a reverse direction.

30. The system according to claim 28 or claim 29, wherein the time sequence shows rotation of the object through a full 360° range of angles of view.

31 . The system according to any one of claims 28 to 30, wherein the variable orientation is varied to display the portion of video image data with a fixed orientation relative to the display device.

32. The system according to any one of claims 28 to 31 , wherein the variable orientation is varied to display the portion of the video image data with an orientation relative to the display device which corresponds to the orientation of the region of record relative to the video image capture device.

33. The system according to any one of claims 28 to 32, wherein the variable orientation is about a vertical axis.

34. The system according to claim 33, wherein the variable orientation is about both vertical and horizontal axes

35. The system according to any one of claims 28 to 34, wherein the portion of the video image data is displayed overlying the second set of video image data.

36. The system according to any one of claims 28 to 35, wherein the display device further comprises a camera arranged to capture the second set of video image data.

37. The system according to any one of claims 28 to 36, wherein the composite video image comprises an augmented reality video image.

38. The system according to any one of claims 28 to 37, further comprising storage

means arranged to store the portion of the video image data; wherein the sending means are arranged to recover the portion of the video image data from the storage means and send the portion of the video image data to the display device.

39. The system according to claim 38, the system further comprising a processing and storage device which comprises the image processing means, the storage means, and the sending means.

40. The system according to any one of claims 28 to 39, wherein the video image capture device comprises the image processing means.

41 . The system according to claim 40, wherein the video image capture means further comprises the sending means, and the sending means is arranged to stream the portion of the video image data to the display device.

42. The system according to any one of claims 28 to 41 , wherein the region of record comprises a colour background and the processing means is arranged to remove the colour background.

43. The system according to claim 42, wherein the background comprises a green

screen, and the processing means is arranged to carry out a chroma key process.

44. The system according to claim 43, wherein the processing menas is arranged to use the chroma key process to generate an alpha channel representation of the first set of video image data, and to use the alpha channel representation to extract the portion of the video image data including the object.

45. The system according to any one of claims 28 to 44, wherein the portion of the video image data is two-dimensional '2D' video.

46. A video image display device comprising:

receiving means arranged to receive first video image data of a region of record including an object, the first video image data comprising a time sequence showing rotation of the object at a range of angles, and to receive rotational position data identifying the rotational position of the object at different times in the video image data time sequence;

combining mean arranged to combine the first video image data with a second set of video image data to form a composite video image; and

display mean arranged to display the composite video image;

wherein the display device is arranged to display the first video image data in the composite video image at a fixed position within the second set of video image data and a variable orientation, the variable orientation being based at least in part on movement of the display device; and

the display device being arranged to:

determine an angle of view of the display device relative to the fixed position; use the rotational position data to identify a time in the time sequence corresponding to the determined angle of view; and

display the composite video image comprising the portion of the video image data at the identified time in the time sequence.

47. The method according to claim 46, wherein, when the determined angle of view of the display device changes, the displayed composite video image comprising the portion of the video image data moves through the time sequence in a forward or a reverse direction.

48. The device according to claim 46 or claim 47, wherein the time sequence shows rotation of the object through a full 360° range of angles of view.

49. The device according to any one of claims 46 to 48, wherein the variable orientation is varied to display the first video image data with a fixed orientation relative to the display device.

50. The device according to any one of claims 46 to 49, wherein the first video image data was captured using a first camera capturing a video image data of a region of record, and the variable orientation is varied to display the first video image data with an orientation relative to the display device which corresponds to the orientation of the region of record relative to the first camera.

51 . The device according to any one of claims 46 to 50, wherein the variable orientation is about a vertical axis.

52. The device according to claim 51 , wherein the variable orientation is about both vertical and horizontal axes

53. The device according to any one of claims 46 to 52, wherein the first video image data is displayed overlying the second set of video image data.

54. The device according to any one of claims 46 to 53, wherein the device further comprises a camera arranged to capture the second set of video image data.

55. The device according to any one of claims 46 to 54, wherein the composite video image comprises an augmented reality video image.

56. The device according to any one of claims 46 to 55, wherein the first video image data is two-dimensional '2D' video.

57. A computer program which, when executed by a processor of a video image display device, causes the device to carry out the method according to any one of claims 17 to 27.