Color parameter adjustment based on the state of scene content and global illumination changes

1. An electronic processing system, comprising:

a processor;

memory communicatively coupled to the processor; and

logic communicatively coupled to the processor to:

determine first scene chromaticity information for a frame of a video sequence,

determine second scene chromaticity information for another frame of the video sequence,

determine first illumination-variant information and first illumination-invariant information for the first scene chromaticity information,

determine second illumination-variant information and second illumination-invariant information for the second scene chromaticity information,

determine a scene content change based on the first and second scene chromaticity information, and

detect a global illumination change in the video sequence based on the first and second scene chromaticity information.

2. The system of claim 1 , wherein the logic is further to:

distinguish the global illumination change from the scene content change.

3. The system of claim 1 , wherein the logic is further to:

determine illumination-variant match information based on the first illumination-variant information with the second illumination-variant information;

determine illumination-invariant match information based on the first illumination-invariant information with the second illumination-invariant information; and

determine the global illumination change based on the illumination-variant match value and the illumination-invariant match value.

4. The system of claim 1 , wherein the logic is further to:

adjust a color parameter based on the determined scene content change and the determined global illumination change.

5. An electronic processing system comprising:

a processor;

memory communicatively coupled to the processor; and

logic communicatively coupled to the processor to:

determine first scene chromaticity information for a frame of a video sequence,

determine second scene chromaticity information for another frame of the video sequence,

determine a scene content change based on the first and second scene chromaticity information,

determine a global illumination change based on the first and second scene chromaticity information, and

adjust one or more of a white point parameter and an automatic white balance convergence speed parameter based on the determined scene content change and the determined global illumination change.

6. A semiconductor package apparatus, comprising:

one or more substrates; and

logic coupled to the one or more substrates, wherein the logic is at least partly implemented in one or more of configurable logic and fixed-functionality hardware logic, the logic coupled to the one or more substrates to:

determine first scene chromaticity information for a frame of a video sequence,

determine second scene chromaticity information for another frame of the video sequence,

determine first illumination-variant information and first illumination-invariant information for the first scene chromaticity information,

determine second illumination-variant information and second illumination-invariant information for the second scene chromaticity information,

determine a scene content change based on the first and second scene chromaticity information, and

detect a global illumination change in the video sequence based on the first and second scene chromaticity information.

7. The apparatus of claim 6 , wherein the logic is further to:

distinguish the global illumination change from the scene content change.

8. The apparatus of claim 6 , wherein the logic is further to:

determine illumination-variant match information based on the first illumination-variant information with the second illumination-variant information;

determine illumination-invariant match information based on the first illumination-invariant information with the second illumination-invariant information; and

determine the global illumination change based on the illumination-variant match value and the illumination-invariant match value.

9. The apparatus of claim 6 , wherein the logic is further to:

adjust a color parameter based on the determined scene content change and the determined global illumination change.

10. A semiconductor package apparatus comprising:

one or more substrates; and

logic coupled to the one or more substrates, wherein the logic is at least partly implemented in one or more of configurable logic and fixed-functionality hardware logic, the logic coupled to the one or more substrates to:

determine first scene chromaticity information for a frame of a video sequence,

determine second scene chromaticity information for another frame of the video sequence,

determine a scene content change based on the first and second scene chromaticity information,

determine a global illumination change based on the first and second scene chromaticity information, and

adjust one or more of a white point parameter and an automatic white balance convergence speed parameter based on the determined scene content change and the determined global illumination change.

11. A method of adjusting a color parameter, comprising:

determining first scene chromaticity information for a frame of a video sequence;

determining second scene chromaticity information for another frame of the video sequence;

determining first illumination-variant information and first illumination-invariant information for the first scene chromaticity information;

determining second illumination-variant information and second illumination-invariant information for the second scene chromaticity information;

determining a scene content change based on the first and second scene chromaticity information; and

detecting a global illumination change in the video sequence based on the first and second scene chromaticity information.

12. The method of claim 11 , further comprising:

distinguishing the global illumination change from the scene content change.

13. The method of claim 11 , further comprising:

determining illumination-variant match information based on the first illumination-variant information with the second illumination-variant information;

determining illumination-invariant match information based on the first illumination-invariant information with the second illumination-invariant information; and

determining the global illumination change based on the illumination-variant match value and the illumination-invariant match value.

14. The method of claim 11 , further comprising:

adjusting a color parameter based on the determined scene content change and the determined global illumination change.

15. A method of adjusting a color parameter, comprising:

determining first scene chromaticity information for a frame of a video sequence;

determining second scene chromaticity information for another frame of the video sequence;

determining a scene content change based on the first and second scene chromaticity information;

detecting a global illumination change in the video sequence based on the first and second scene chromaticity information; and

adjusting one or more of a white point parameter and an automatic white balance convergence speed parameter based on the determined scene content change and the determined global illumination change.

16. At least one non-transitory computer readable medium, comprising a set of instructions, which when executed by a computing device, cause the computing device to:

determine first scene chromaticity information for a frame of a video sequence;

determine second scene chromaticity information for another frame of the video sequence;

determine first illumination-variant information and first illumination-invariant information for the first scene chromaticity information;

determine second illumination-variant information and second illumination-invariant information for the second scene chromaticity information;

determine a scene content change based on the first and second scene chromaticity information; and

detect a global illumination change in the video sequence based on the first and second scene chromaticity information.

17. The at least one non-transitory computer readable medium of claim 16 , comprising a further set of instructions, which when executed by the computing device, cause the computing device to:

distinguish the global illumination change from the scene content change.

18. The at least one non-transitory computer readable medium of claim 16 , comprising a further set of instructions, which when executed by the computing device, cause the computing device to:

determine illumination-variant match information based on the first illumination-variant information with the second illumination-variant information;

determine illumination-invariant match information based on the first illumination-invariant information with the second illumination-invariant information; and

determine the global illumination change based on the illumination-variant match value and the illumination-invariant match value.

19. The at least one non-transitory computer readable medium of claim 16 , comprising a further set of instructions, which when executed by the computing device, cause the computing device to:

adjust a color parameter based on the determined scene content change and the determined global illumination change.

20. At least one non-transitory computer readable medium, comprising a set of instructions, which when executed by a computing device, cause the computing device to:

determine first scene chromaticity information for a frame of a video sequence;

determine second scene chromaticity information for another frame of the video sequence;

determine a scene content change based on the first and second scene chromaticity information;

detect a global illumination change in the video sequence based on the first and second scene chromaticity information; and

adjust one or more of a white point parameter and an automatic white balance convergence speed parameter based on the determined scene content change and the determined global illumination change.