Viewing-angle-dependent color/brightness correction for display system

1. A display system comprising:

a tracking subsystem configured to track at least one of a pose of a head or a pose of an eye of a viewer;

an image correction module configured to:

for each pixel of at least a subset of pixels of an input image:

determine a pixel view angle for the pixel based on the pose of the head or the pose of the eye;

determine a corrected pixel value based on an input pixel value of the pixel in the input image and based on the pixel view angle; and

provide the corrected pixel value for the pixel in an angle-corrected image corresponding to the input image; and

apply at least one of a spatial dithering pattern or a temporal dithering pattern to corrected pixel values of the angle-corrected image; and

a display panel to display the angle-corrected image.

2. The display system of claim 1 , wherein the corrected pixel value represents a corrective adjustment to counteract a viewing-angle-dependent brightness or color response of a corresponding pixel of the display panel.

3. The display system of claim 1 , wherein the corrected pixel value is at least one of luminance or color.

4. The display system of claim 1 , further comprising:

a correction transform component configured based on relationships between pixel luminance and view angle of a pixel of the display panel for a plurality of pixel values; and

wherein the image correction module determines the corrected pixel value using the correction transform.

5. The display system of claim 4 , wherein the relationships are determined based on one of empirical measurement, simulation, or modeling of the display panel.

6. The display system of claim 4 , wherein the correction transform component comprises one of a look up table or an analytical function.

7. The display system of claim 1 , wherein the image correction module is configured to use an activation function to selectively correct the input pixel value.

8. The display system of claim 1 , wherein the image correction module is configured to pre-darken pixel values of one of the input image or the angle-corrected image using one of: a uniform pre-darkening of the pixel values based on the pose of the head or the pose of the eye; and a static pre-darkening of the pixel values based on positions of pixels within the input image.

9. The display system of claim 8 , further comprising:

a backlight comprising a plurality of independently-controllable segments, wherein the backlight is controlled to compensate for the pre-darkening of the pixel values on a segment-by-segment basis.

10. The display system of claim 1 , wherein the display panel comprises a display panel of one of: a television; a smartphone; a tablet computer; a notebook computer; a computer monitor, a near-eye display device; and a lightfield display device.

11. The display system of claim 1 , wherein the tracking subsystem comprises a camera-based head-tracking subsystem.

12. A method for implementation in a display system, the method comprising:

tracking at least one of a pose of a viewer's head or a pose of a viewer's eye;

for each pixel of at least a subset of pixels of an input image:

determining a pixel view angle for the pixel based on the pose of the viewer's head or the pose of the viewer's eye;

determining a corrected pixel value based on an input pixel value of the pixel in the input image and based on the pixel view angle; and

providing the corrected pixel value for the pixel in an angle-corrected image corresponding to the input image;

applying at least one of a spatial dithering pattern or a temporal dithering pattern to corrected pixel values of the angle-corrected image; and

providing the angle-corrected image for display at a display panel of the display system.

13. The method of claim 12 , wherein the corrected pixel value represents an corrective adjustment to counteract an viewing-angle-dependent brightness or color response of the corresponding pixel of the display panel.

14. The method of claim 12 , wherein the corrected pixel value is at least one of a luminance value or a color value.

15. The method of at least one of claim 12 , further comprising:

configuring a correction transform component based on relationships between pixel luminance and view angle of a pixel of the display panel for a plurality of pixel values; and

wherein determining the corrected pixel value comprises determining the corrected pixel value using the correction transform.

16. The method of claim 15 , further comprising:

determining the relationships based on one of empirical measurement, simulation, or modeling of the display panel.

17. The method of claim 12 , further comprising:

selectively correcting the input pixel value based on an activation function.

18. The method of claim 12 , further comprising:

pre-darkening pixel values of one of the input image or the angle-corrected image using one of: a uniform pre-darkening of the pixel values based on the pose of the viewer's head or the pose of the viewer's eye; and a static pre-darkening of the pixel values based on positions of pixels within the input image.

19. The method of claim 18 , further comprising:

controlling individually-controllable segments of a backlight to compensate for the pre-darkening of the pixel values on a segment-by-segment basis.

20. The method of claim 12 , wherein the display panel comprises a display panel of one of: a television; a smartphone; a tablet computer; a notebook computer; a computer monitor, a near-eye display device; and a lightfield display device.