System and method for video processing and display

• US 20070247518A1
• Filed: 04/06/2007
• Published: 10/25/2007
• Est. Priority Date: 04/06/2006
• Status: Abandoned Application

• Current Assignee: British Broadcasting Corporation
• Original Assignee: British Broadcasting Corporation
• Inventors: Sargeant, Timothy, Debenham, Paul, Chandaria, Jigna, Thomas, Graham, Weir, Bruce
• Application Number:
  US11/783,282
• Publication Number:
  US 20070247518A1
• Time in Patent Office: Days
• US Class Current: 348/36
• CPC Class Codes: G03B 21/006 using LCD's
• CPC Class Codes: G09G 2310/0232 Special driving of display border areas
• CPC Class Codes: G09G 3/002 to project the image of a two-dimensional display, such as an array of light emitting or modulating elements or a CRT
• CPC Class Codes: H04N 5/74 Projection arrangements for image reproduction, e.g. using eidophor

Abstract

To supplement a video display on a conventional television, a surround video stream may be projected onto wall and other surfaces adjacent the television. The surround video stream may derive from a wide angle lens camera positioned alongside the main camera. The surround video stream may be processed in a local processor to compensate for departures from planar geometry in the wall surfaces. Where no surround video stream is received, a video processor may synthesize a surround video stream from the main video signal. Moving objects represented in the main video signal may be synthesized in the surround video to provide the perception of movement across the viewer'"'"'s full field of view.

Claims

1. A method of providing a video display comprising:

providing a primary video display in a primary display region; and

providing a surround video display in a region surrounding the primary display region, wherein the surround video display is of lower quality than the primary video display.

2. A method according to claim 1, wherein the primary video display is provided by a primary display device having a dedicated screen area.

3. A method according to claim 1, wherein the primary video display is provided by a device having an active screen.

4. A method according to claim 2, wherein the surround video display is provided by projection onto at least one object surrounding the primary display device.

5. A method according to claim 4, further comprising compensating the projected surround video display based on the geometry of said at least one object.

6. A method according to claim 1, wherein apparent motion of at least one object in the primary video display is extrapolated into the surround video display

7. A method of providing a video display comprising:

providing a primary video display in a primary display region; and

providing a surround video display in a region surrounding the primary display region, wherein the surround video display is of lower resolution than the primary display and wherein the surround video display extends over a substantially larger field of view than the primary display.

8. A method according to claim 7, wherein the primary video display is provided on a primary display device and wherein the surround video display is provided by projection onto at least one object surrounding the primary display device.

9. A method according to claim 8, further comprising receiving at least one encoded video signal and providing a primary signal to cause the primary display device to display the primary video and a surround signal to cause a surround video projector to display the surround video.

10. A method according to claim 9, wherein the surround signal comprises information for use in synthesizing surround information based on the primary video signal.

11. A method according to claim 9, comprising synthesizing at least a part of a surround video signal based on the content of a primary video signal.

12. A method according to claim 7, wherein apparent motion of at least one object in the primary video display is extrapolated into the surround video display.

13. A method according to claim 9, wherein a surround video signal is provided by transforming generic surround images in real time based on the geometry of the surroundings of the primary video display.

14. A method of distributing video content, comprising:

supplying a primary representation of a first view of a scene which representation is decodable to provide a primary video display; and

supplying a surround representation of a second view of the scene, being a wider angle view than said first view, which surround representation is separately decodable to provide a surround video display in a region surrounding the primary display region.

15. A method according to claim 14 wherein primary representation comprises primary video signal and the surround representation comprises a surround video signal which is more coarsely quantized or encoded at a lower bit rate than the primary video signal.

16. A method of distributing video content, comprising:

supplying a primary representation of a first view of a scene which representation is decodable to provide a primary video display; and

supplying surround information which surround representation is separately decodable to provide a surround video display in a region surrounding the primary display region such that apparent motion of at least one object in the primary video display is extrapolated into the surround video display

17. A method according to claim 16, wherein the surround video display has a lower color or luminance resolution than the primary video display.

18. A video processing apparatus comprising:

an input stage for receiving a video input;

a primary display driver connected with the input stage and adapted to provide a primary video signal for a primary display on a screen in a room; and

a surround video processor connected with the input stage and adapted to provide a surround video signal for a surround display projected onto surfaces of the room adjacent the screen, the surround video processor being adapted to hold geometrical parameters of said surfaces and to compensate in said surround video signal for said parameters.

19. An apparatus according to claim 18, wherein the input stage is adapted to receive a primary video input accompanied by surround video information.

20. An apparatus according to claim 19, wherein the surround video information comprises a video signal representing a wider angle view of a scene represented in the primary video signal.

21. An apparatus according to claim 18, wherein the surround video processor is adapted to mask the area of said screen in the surround video signal.

22. An apparatus according to claim 18, wherein the surround video processor is adapted to analyze primary video information contained in the video input and to synthesize therefrom a surround video signal.

23. An apparatus according to claim 18, wherein the surround video processor is adapted such that the trajectory of moving objects represented in the primary display is extrapolated into the surround display.

24. An apparatus according to claim 18, wherein the surround video display is of lower quality than the primary video display

25. A video processing apparatus comprising:

an input stage for receiving a video input;

a primary display driver connected with the input stage and adapted to provide a primary video signal for a primary display; and

a surround video processor connected with the input stage adapted to provide a surround video signal for a surround display in which the trajectory of moving objects represented in the primary display is extrapolated into the surround display.

26. An apparatus according to claim 25, wherein the primary display driver is adapted to provide a primary video signal for a primary display on a screen in a room and wherein the surround video processor is adapted to provide a surround video signal for a surround display projected onto surfaces of the room adjacent the screen.

27. An apparatus according to claim 25, wherein the surround video processor is adapted to hold geometrical parameters of said surfaces and to compensate in said surround video signal for said parameters.

28. An apparatus according to claim 26, wherein the surround video processor is adapted to mask the area of said screen in the surround video signal.

29. An apparatus according to claim 25, wherein the input stage is adapted to receive a primary video input accompanied by surround video information.

30. An apparatus according to claim 29, wherein the surround video information comprises a video signal representing a wider angle view of a scene represented in the primary video signal.

31. An apparatus according to claim 30, wherein the surround video processor is adapted to analyze primary video information contained in the video input and to synthesize therefrom a surround video signal

32. An apparatus according to claim 29 wherein the surround video signal has a lower spatial resolution than the primary video signal.

33. An apparatus according to claim 29 wherein the surround video signal has a lower temporal resolution than the primary video signal.

34. A method of calibrating a video display apparatus including a primary video display and a surround video projector, the method comprising:

registering the projector and primary video display so that the projected surround video surrounds but does not substantially overlap the primary video display.

35. A method according to claim 34, wherein a masking area corresponding to the primary video display is defined.

36. A method of calibrating a video display apparatus including a primary video display and a surround video projector, the method comprising:

storing data indicative of the geometry and/or reflectivity and/or color of the surroundings of the primary video display for use in modifying a surround video image to be projected onto the surroundings.

37. A method according to claim 36, comprising setting at least one calibration parameter based on an image obtained from a camera associated with a projector for projecting the surround video image.

38. A method according to claim 37, further comprising projecting at least one calibration image or video sequence.

39. A method according to claim 36, including compensating the surround video signal for color or reflectivity of objects surrounding the primary video display.

40. A video processing apparatus comprising:

means for receiving video information;

means for outputting a signal to a primary video display;

surrounding object information storage means;

image transformation means for transforming surround video image data based on the stored surrounding object information; and

means for outputting a surround video signal to a surround projector.

41. Apparatus according to claim 40, further comprising calibration means for determining at least some of the surrounding object information.

42. Apparatus according to claim 40, further comprising camera input means for receiving an image including surrounding objects.

43. A system comprising:

a primary display driver for outputting a signal to a primary video display;

a surrounding object information store;

an image transformation processor for transforming surround video image data based on the stored surrounding object information;

a surround video display driver for outputting a surround video signal; and

a surround projector receiving the surround video signal.

44. A system according to claim 43, including a mode selector for selecting at least one synthetic surround video signal or no signal in the absence of received or stored information providing the surround video signal.

45. Video capture apparatus comprising:

a primary video capture means for capturing primary video corresponding to at least one broadcast standard for a primary field of view; and

surround video capture means for capturing surround video for a surround field of view surrounding the primary field of view.

46. Apparatus according to claim 45, wherein the surround video capture means is arranged to capture video overlapping with or encompassing the primary field of view.

47. An apparatus comprising a processor to:

receive at least one encoded video signal;

provide a primary signal to generate a primary video display on a primary display device;

provide a surround signal to generate a surround video display by projection onto at least one object surrounding the primary display device wherein apparent motion of at least one object in the primary video display is extrapolated into the surround video display.