METHODS AND SYSTEMS FOR DISPLAYS WITH CHROMATIC CORRECTION HAVING DIFFERING CHROMATIC RANGES

• US 20100289810A1
• Filed: 12/14/2007
• Published: 11/18/2010
• Est. Priority Date: 04/03/2007
• Status: Active Grant

• Current Assignee: InterDigital Madison Patent Holdings (InterDigital, Inc.)
• Original Assignee: Thomson Licensing Dtv
• Inventors: Stauder, Jurgen, Doser, Ingo Tobias, Lee, Bongsun
• Granted Patent: US 9,432,554 B2
• Time in Patent Office: Days
• US Class Current: 345/589
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607
• CPC Class Codes: H04N 1/6058 Reduction of colour to a range of reproducible colours, e.g. to ink- reproducible colour gamut

Abstract

There are provided methods and systems for color correcting displays with different color gamuts. A method includes performing an initial color correction on source picture content using a reference type display having a reference color gamut to obtain mastered color corrected picture content for display on reference type displays having the reference color gamut. The method further includes determining a first set of metadata defining a color gamut mapping specification for a color gamut mapping from a non-reference type display having a non-reference color gamut to the reference type display. The method also includes performing a subsequent color correction using the non-reference type display and the mastered color corrected picture content to create a second set of metadata directed to non-reference type displays having the non-reference color gamut. The method additionally includes generating a final set of metadata from the first set of metadata and the second set of metadata, for a subsequent color transform that color transforms the mastered color corrected picture content for display on non-reference type displays for consumer consumption. The source picture content is mastered for consumer consumption only for the reference type displays having the reference color gamut.

Claims

1. A method for color correcting, comprising:

performing an initial color correction on source picture content using a reference type display having a reference color gamut to obtain mastered color corrected picture content for display on reference type displays having the reference color gamut;

determining a first set of metadata defining a color gamut mapping specification for a color gamut mapping from a non-reference type display having a non-reference color gamut to the reference type display;

performing a subsequent color correction using the non-reference type display and the mastered color corrected picture content to create a second set of metadata directed to non-reference type displays having the non-reference color gamut;

generating a final set of metadata from the first set of metadata and the second set of metadata, for a subsequent color transform that color transforms the mastered color corrected picture content for display on non-reference type displays for consumer consumption,

wherein the source picture content is mastered for consumer consumption only for the reference type displays having the reference color gamut.

2. The method of claim 1, wherein at least one of the first set of metadata, the second set of metadata, and the final set of metadata are represented by respective look up tables.

3. The method of claim 2, wherein the look up table representing the final set of metadata is formed by concatenating an inverted version of the look up table representing the second set of metadata the look up table representing the first set of metadata.

4. The method of claim 1, wherein said performing steps, said determining step, and said generating step relate to a creation of the display content for subsequent consumer consumption.

5. The method of claim 1, wherein the final set of metadata is provided to a final consumption display at least one of in-band and out-of-band with respect to the mastered display content.

6. The method of claim 1, wherein the reference type displays and the non-reference type displays are at least one of liquid crystal displays, plasma displays, cathode ray tube displays, digital light processing displays, organic light emitting diode displays, liquid crystal on silicon displays, and direct drive image light amplifier displays.

7. A method for color correcting, comprising:

performing an initial color correction on source picture content using a non-reference type display having a non-reference color gamut to obtain mastered color corrected picture content for display on non-reference type displays having the non-reference color gamut and to obtain initial color correction data directed to reference type displays having a reference color gamut;

performing a color gamut mapping using the initial color correction data and the mastered color corrected picture content to modify the mastered color corrected picture content for display on a reference type display having the reference color gamut; and

performing a subsequent color correction using the reference type display having the reference color gamut and the modified mastered color corrected picture content to obtain mastered color corrected picture content for display on the reference type displays having the reference color gamut.

8. The method of claim 7, wherein the mastered color corrected picture content for display on the reference type displays having the reference color gamut is used directly by a consumer device.

9. The method of claim 7, wherein the mastered color corrected picture content for display on the reference type displays having the reference color gamut is reconstructed by a consumer device before use by the consumer device, using metadata and the mastered color corrected picture content for display on the non-reference type displays having the non-reference color gamut.

10. The method of claim 7, wherein the reference type displays and the non-reference type displays are at least one of liquid crystal displays, plasma displays, cathode ray tube displays, digital light processing displays, organic light emitting diode displays, liquid crystal on silicon displays, and direct drive image light amplifier displays.

11. A method for color correcting, comprising:

performing an initial color correction on source picture content using a reference type display having a reference color gamut to obtain mastered color corrected picture content for display on reference type displays having the reference color gamut;

performing a subsequent color correction using a non-reference type display having a non-reference color gamut and the mastered color corrected picture content to create a first set of metadata directed to non-reference type displays having the non-reference color gamut;

determining a second set of metadata defining a color gamut mapping specification from a non-reference type display to the reference type display; and

generating a final set of metadata from the first set of metadata and the second set of metadata, for a subsequent color transform that color transforms the mastered color corrected picture content for display on non-reference type displays for consumer consumption,

wherein the source picture content is mastered for consumer consumption only for the reference type displays having the reference color gamut.

12. The method of claim 11, wherein at least one of the first set of metadata, the second set of metadata, and the final set of metadata are represented by respective look up tables.

13. The method of claim 12, wherein the look up table representing the final set of metadata is formed by concatenating an inverted version of the look up table representing the second set of metadata the look up table representing the first set of metadata.

14. The method of claim 11, wherein said performing steps, said determining step, and said generating step relate to a creation of the display content for subsequent consumer consumption.

15. The method of claim 11, wherein the final set of metadata is provided to a final consumption display at least one of in-band and out-of-band with respect to the mastered display content.

16. The method of claim 11, wherein the reference type displays and the non-reference type displays are at least one of liquid crystal displays, plasma displays, cathode ray tube displays, digital light processing displays, organic light emitting diode displays, liquid crystal on silicon displays, and direct drive image light amplifier displays.

17. A method for color correcting, comprising:

performing an initial color correction on source picture content using a reference type display having a reference color gamut to obtain mastered color corrected picture content for display on reference type displays having the reference color gamut;

performing a subsequent color correction using a non-reference type display having a non-reference color gamut and the mastered color corrected picture content for display on the reference type displays having the reference color gamut to obtain subsequent color correction data; and

performing a color gamut mapping using the subsequent color correction data and the mastered color corrected picture content for display on reference type displays having the reference color gamut to obtain mastered color corrected picture content for display on non-reference type displays having the non-reference color gamut.

18. The method of claim 17, wherein the mastered color corrected picture content for display on the reference type displays having the reference color gamut is used directly by a consumer device.

19. The method of claim 17, wherein the mastered color corrected picture content for display on the reference type displays having the reference color gamut is reconstructed by a consumer device before use by the consumer device, using metadata and the mastered color corrected picture content for display on the non-reference type displays having the non-reference color gamut.

20. The method of claim 17, wherein the reference type displays and the non-reference type displays are at least one of liquid crystal displays, plasma displays, cathode ray tube displays, digital light processing displays, organic light emitting diode displays, liquid crystal on silicon displays, and direct drive image light amplifier displays.

21. A system for color correcting, comprising:

a color correction module for performing an initial color correction on source picture content using a reference type display having a reference color gamut to obtain mastered color corrected picture content for display on reference type displays having the reference color gamut;

a color gamut mapping module for performing a color gamut mapping to generate a first set of metadata defining a color gamut mapping specification for a color gamut mapping from a non-reference type display having a non-reference color gamut to the reference type display;

a subsequent color correction module for performing a subsequent color correction using the non-reference type display and the mastered color corrected picture content to create a second set of metadata directed to non-reference type displays having the non-reference color gamut;

a final set metadata generator for generating a final set of metadata from the first set of metadata and the second set of metadata, for a subsequent color transform that color transforms the mastered color corrected picture content for display on non-reference type displays for consumer consumption,

wherein the source picture content is mastered for consumer consumption only for the reference type displays having the reference color gamut.

22. The system of claim 21, wherein the final set of metadata is generated without generating any other mastered content other than the mastered color corrected picture content for display on reference type displays.

23. The system of claim 21, wherein at least one of the first set of metadata, the second set of metadata, and the final set of metadata are represented by respective look up tables.

24. The system of claim 23, wherein the look up table representing the final set of metadata is formed by concatenating an inverted version of the look up table representing the second set of metadata the look up table representing the first set of metadata.

25. The system of claim 21, wherein the final set of metadata is provided to a final consumption display at least one of in-band and out-of-band with respect to the mastered display content.

26. The system of claim 21, wherein the reference type displays and the non-reference type displays are at least one of liquid crystal displays, plasma displays, cathode ray tube displays, digital light processing displays, organic light emitting diode displays, liquid crystal on silicon displays, and direct drive image light amplifier displays.

27. The system of claim 21, wherein the color correction module and the subsequent color correction module are comprised in a single entity.

28. A system for color correcting, comprising:

a color correction module for performing an initial color correction on source picture content using a non-reference type display having a non-reference color gamut to obtain mastered color corrected picture content for display on non-reference type displays having the non-reference color gamut and to obtain initial color correction data directed to reference type displays having a reference color gamut;

a color gamut mapping module for performing a color gamut mapping using the initial color correction data and the mastered color corrected picture content to modify the mastered color corrected picture content for display on a reference type display having the reference color gamut; and

a subsequent color correction module for performing a subsequent color correction using the reference type display having the reference color gamut and the modified mastered color corrected picture content to obtain mastered color corrected picture content for display on the reference type displays having the reference color gamut.

29. The system of claim 28, wherein the mastered color corrected picture content for display on the reference type displays having the reference color gamut is used directly by a consumer device.

30. The system of claim 28, wherein the mastered color corrected picture content for display on the reference type displays having the reference color gamut is reconstructed by a consumer device before use by the consumer device, using metadata and the mastered color corrected picture content for display on the non-reference type displays having the non-reference color gamut.

31. The system of claim 28, wherein the reference type displays and the non-reference type displays are at least one of liquid crystal displays, plasma displays, cathode ray tube displays, digital light processing displays, organic light emitting diode displays, liquid crystal on silicon displays, and direct drive image light amplifier displays.

32. The system of claim 28, wherein the color correction module and the subsequent color correction module are comprised in a single entity.

33. A system for color correcting, comprising:

a color correction module for performing an initial color correction on source picture content using a reference type display having a reference color gamut to obtain mastered color corrected picture content for display on reference type displays having the reference color gamut;

a subsequent color correction module for performing a subsequent color correction using a non-reference type display having a non-reference color gamut and the mastered color corrected picture content to create a first set of metadata directed to non-reference type displays having the non-reference color gamut;

a color gamut mapping module for performing a color gamut mapping to generate a second set of metadata defining a color gamut mapping specification from a non-reference type display to the reference type display; and

a final set metadata generator for generating a final set of metadata from the first set of metadata and the second set of metadata, for a subsequent color transform that color transforms the mastered color corrected picture content for display on non-reference type displays for consumer consumption,

wherein the source picture content is mastered for consumer consumption only for the reference type displays having the reference color gamut.

34. The system of claim 33, wherein the final set of metadata is generated without generating any other mastered content other than the mastered color corrected picture content for display on reference type displays.

35. The system of claim 33, wherein at least one of the first set of metadata, the second set of metadata, and the final set of metadata are represented by respective look up tables.

36. The system of claim 35, wherein the look up table representing the final set of metadata is formed by concatenating an inverted version of the look up table representing the second set of metadata the look up table representing the first set of metadata.

37. The system of claim 33, wherein the final set of metadata is provided to a final consumption display at least one of in-band and out-of-band with respect to the mastered display content.

38. The system of claim 33, wherein the reference type displays and the non-reference type displays are at least one of liquid crystal displays, plasma displays, cathode ray tube displays, digital light processing displays, organic light emitting diode displays, liquid crystal on silicon displays, and direct drive image light amplifier displays.

39. The system of claim 33, wherein the color correction module and the subsequent color correction module are comprised in a single entity.

40. A system for color correcting, comprising:

a color correction module for performing an initial color correction on source picture content using a reference type display having a reference color gamut to obtain mastered color corrected picture content for display on reference type displays having the reference color gamut;

a subsequent color correction module for performing a subsequent color correction using a non-reference type display having a non-reference color gamut and the mastered color corrected picture content for display on the reference type displays having the reference color gamut to obtain subsequent color correction data; and

a color gamut mapping module for performing a color gamut mapping using the subsequent color correction data and the mastered color corrected picture content for display on reference type displays having the reference color gamut to obtain mastered color corrected picture content for display on non-reference type displays having the non-reference color gamut.

41. The system of claim 40, wherein the mastered color corrected picture content for display on the reference type displays having the reference color gamut is used directly by a consumer device.

42. The system of claim 40, wherein the mastered color corrected picture content for display on the reference type displays having the reference color gamut is reconstructed by a consumer device before use by the consumer device, using metadata and the mastered color corrected picture content for display on the non-reference type displays having the non-reference color gamut.

43. The system of claim 40, wherein the reference type displays and the non-reference type displays are at least one of liquid crystal displays, plasma displays, cathode ray tube displays, digital light processing displays, organic light emitting diode displays, liquid crystal on silicon displays, and direct drive image light amplifier displays.

44. The system of claim 40, wherein the color correction module and the subsequent color correction module are comprised in a single entity.

45. A system for color correcting, comprising:

means for performing an initial color correction on source picture content using a reference type display having a reference color gamut to obtain mastered color corrected picture content for display on reference type displays having the reference color gamut;

means for determining a first set of metadata defining a color gamut mapping specification for a color gamut mapping from a non-reference type display having a non-reference color gamut to the reference type display;

means for performing a subsequent color correction using the non-reference type display and the mastered color corrected picture content to create a second set of metadata directed to non-reference type displays having the non-reference color gamut; and

means for generating a final set of metadata from the first set of metadata and the second set of metadata, for a subsequent color transform that color transforms the mastered color corrected picture content for display on non-reference type displays for consumer consumption,

wherein the source picture content is mastered for consumer consumption only for the reference type displays having the reference color gamut.

46. The system of claim 45, wherein at least one of the first set of metadata, the second set of metadata, and the final set of metadata are represented by respective look up tables.

47. The system of claim 46, wherein the look up table representing the final set of metadata is formed by concatenating an inverted version of the look up table representing the second set of metadata the look up table representing the first set of metadata.

48. The system of claim 45, wherein both of said means for performing, said means for determining, and said means for generating relate to a creation of the display content for subsequent consumer consumption.

49. The system of claim 45, wherein the final set of metadata is provided to a final consumption display at least one of in-band and out-of-band with respect to the mastered display content.

50. The system of claim 45, wherein the reference type displays and the non-reference type displays are at least one of liquid crystal displays, plasma displays, cathode ray tube displays, digital light processing displays, organic light emitting diode displays, liquid crystal on silicon displays, and direct drive image light amplifier displays.

51. A system for color correcting, comprising:

means for performing an initial color correction on source picture content using a non-reference type display having a non-reference color gamut to obtain mastered color corrected picture content for display on non-reference type displays having the non-reference color gamut and to obtain initial color correction data directed to reference type displays having a reference color gamut;

means for performing a color gamut mapping using the initial color correction data and the mastered color corrected picture content to modify the mastered color corrected picture content for display on a reference type display having the reference color gamut; and

means for performing a subsequent color correction using the reference type display having the reference color gamut and the modified mastered color corrected picture content to obtain mastered color corrected picture content for display on the reference type displays having the reference color gamut.

52. The system of claim 51, wherein the mastered color corrected picture content for display on the reference type displays having the reference color gamut is used directly by a consumer device.

53. The system of claim 51, wherein the mastered color corrected picture content for display on the reference type displays having the reference color gamut is reconstructed by a consumer device before use by the consumer device, using metadata and the mastered color corrected picture content for display on the non-reference type displays having the non-reference color gamut.

54. The system of claim 51, wherein the reference type displays and the non-reference type displays are at least one of liquid crystal displays, plasma displays, cathode ray tube displays, digital light processing displays, organic light emitting diode displays, liquid crystal on silicon displays, and direct drive image light amplifier displays.

55. A system for color correcting, comprising:

means for performing an initial color correction on source picture content using a reference type display having a reference color gamut to obtain mastered color corrected picture content for display on reference type displays having the reference color gamut;

means for performing a subsequent color correction using a non-reference type display having a non-reference color gamut and the mastered color corrected picture content to create a first set of metadata directed to non-reference type displays having the non-reference color gamut;

means for determining a second set of metadata defining a color gamut mapping specification from a non-reference type display to the reference type display; and

means for generating a final set of metadata from the first set of metadata and the second set of metadata, for a subsequent color transform that color transforms the mastered color corrected picture content for display on non-reference type displays for consumer consumption,

wherein the source picture content is mastered for consumer consumption only for the reference type displays having the reference color gamut.

56. The system of claim 55, wherein at least one of the first set of metadata, the second set of metadata, and the final set of metadata are represented by respective look up tables.

57. The system of claim 56, wherein the look up table representing the final set of metadata is formed by concatenating an inverted version of the look up table representing the second set of metadata the look up table representing the first set of metadata.

58. The system of claim 55, wherein both of said means for performing, said means for determining, and said means for generating relate to a creation of the display content for subsequent consumer consumption.

59. The system of claim 55, wherein the final set of metadata is provided to a final consumption display at least one of in-band and out-of-band with respect to the mastered display content.

60. The system of claim 55, wherein the reference type displays and the non-reference type displays are at least one of liquid crystal displays, plasma displays, cathode ray tube displays, digital light processing displays, organic light emitting diode displays, liquid crystal on silicon displays, and direct drive image light amplifier displays.

61. A system for color correcting, comprising:

means or performing an initial color correction on source picture content using a reference type display having a reference color gamut to obtain mastered color corrected picture content for display on reference type displays having the reference color gamut;

means for performing a subsequent color correction using a non-reference type display having a non-reference color gamut and the mastered color corrected picture content for display on the reference type displays having the reference color gamut to obtain subsequent color correction data; and

means for performing a color gamut mapping using the subsequent color correction data and the mastered color corrected picture content for display on reference type displays having the reference color gamut to obtain mastered color corrected picture content for display on non-reference type displays having the non-reference color gamut.

62. The system of claim 61, wherein the mastered color corrected picture content for display on the reference type displays having the reference color gamut is used directly by a consumer device.

63. The system of claim 61, wherein the mastered color corrected picture content for display on the reference type displays having the reference color gamut is reconstructed by a consumer device before use by the consumer device, using metadata and the mastered color corrected picture content for display on the non-reference type displays having the non-reference color gamut.

64. The system of claim 61, wherein the reference type displays and the non-reference type displays are at least one of liquid crystal displays, plasma displays, cathode ray tube displays, digital light processing displays, organic light emitting diode displays, liquid crystal on silicon displays, and direct drive image light amplifier displays.