METHODS OF ZERO-D DIMMING AND REDUCING PERCEIVED IMAGE CROSSTALK IN A MULTIVIEW DISPLAY

• US 20120113153A1
• Filed: 11/04/2010
• Published: 05/10/2012
• Est. Priority Date: 11/04/2010
• Status: Abandoned Application

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Casner, Glenn E.
• Application Number:
  US12/939,249
• Publication Number:
  US 20120113153A1
• Time in Patent Office: Days
• US Class Current: 345/690
• CPC Class Codes: G02B 30/27 involving lenticular arrays
• CPC Class Codes: G09G 2320/0209 Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
• CPC Class Codes: G09G 2320/0271 Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
• CPC Class Codes: G09G 2320/0646 Modulation of illumination source brightness and image signal correlated to each other
• CPC Class Codes: G09G 2320/0693 Calibration of display systems
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2340/16 Determination of a pixel data signal depending on the signal applied in the previous frame
• CPC Class Codes: G09G 3/003 to produce spatial visual effects
• CPC Class Codes: H04N 13/305 using lenticular lenses, e.g. arrangements of cylindrical lenses
• CPC Class Codes: H04N 13/32 using arrays of controllable light sources; using moving apertures or moving light sources
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof

Abstract

Methods of implementing zero-D dimming and reducing perceived image crosstalk in a multiview display. One method includes providing an image stream to a display. The image stream includes a temporal sequence of images where at least a first image view and then a second image view are displayed on the display in a time sequential manner. Pixel luminance values are remapped for the first and second image views by applying a non-constant remapping function to original pixel luminance values of the first and second image views in order to generate new pixel luminance values. The temporal sequence of images are conditioned by generating new luminance values for the image pixels by applying a non-constant function to the original pixel luminance values and then modifying a color intensity of at least selected pixels along the horizontal dimension based on a non-constant crosstalk correction function for the horizontal dimension.

Claims

1. A method of performing zero-D dimming and reducing perceived image crosstalk in a multiview display comprising:

providing an image stream to a display, the display comprising a horizontal dimension that extends from a first side of the display to an opposing second side of the display, the image stream comprising a temporal sequence of images where at least a first image view and then a second image view is displayed on the display in a time sequential manner;

remapping pixel luminance values for the first image view and the second image view by applying a non-constant remapping function to original pixel luminance values of the first image view and the second image view in order to generate new pixel luminance values; and

conditioning the temporal sequence of images before the temporal sequence of images is displayed on the display to reduce perceived displayed image crosstalk between the at least first image view and the second image view, the conditioning comprising modifying a color intensity of, at least selected, pixels along the horizontal dimension based on a non-constant crosstalk correction function for the horizontal dimension.

2. The method of claim 1, wherein the image stream provides an autostereoscopic display and the first image view provides images primarily to a right eye of a viewer of the display and the second image view provides images primarily to a left eye of the view of the display, forming a perceived three dimensional display image.

3. The method of claim 1, wherein the image stream provides a dual view display and the first image view provides images primarily to a first viewer of the display and the second image view provides images primarily to a second viewer of the display.

4. The method of claim 1, wherein the non-constant crosstalk correction function is a non-linear function.

5. The method of claim 1, wherein the non-constant remapping function comprises a linear remapping.

6. The method of claim 1, wherein the non-constant remapping function comprises a curved remapping.

7. The method of claim 1, wherein the conditioning step further comprises adjusting the color intensity based upon user feedback concerning perceived crosstalk reduction of the first and second image views.

8. The method of claim 1, wherein remapping step comprises generating the new pixel luminance values within a sub-range of a full range of the pixel luminance values.

9. The method of claim 1, wherein the remapping step is performed before the conditioning step.

10. A method of performing zero-D dimming and reducing perceived image crosstalk in a multiview display comprising:

providing an image stream to a display, the display comprising a horizontal dimension that extends from a first side of the display to an opposing second side of the display, the image stream comprising a temporal sequence of images where at least a first image view and then a second image view is displayed on the display in a time sequential manner;

remapping pixel luminance values for the first image view and the second image view by applying a non-constant remapping function to original pixel luminance values of the first image view and the second image view in order to generate new pixel luminance values; and

conditioning the first image view and the second image view of the image stream before the image stream is displayed on the display to reduce perceived displayed image crosstalk between the first image view and second image view, the conditioning comprising modifying a color intensity of, at least selected, pixels along the horizontal dimension based on a non-constant crosstalk correction function for the horizontal dimension, and rescaling a color intensity range of the first image view and second image view so that the modified color intensity is within the color intensity range.

11. The method of claim 10, wherein color intensity of each color is rescaled so that the modified color intensity of each color is within the color intensity range for that color.

12. The method of claim 10, wherein the image stream provides an autostereoscopic display and the first image view provides images primarily to a right eye of a viewer of the display and the second image view provides images primarily to a left eye of the view of the display, forming a perceived three dimensional display image.

13. The method of claim 10, wherein the image stream provides a dual view display and the first image view provides images primarily to a first viewer of the display and the second image view provides images primarily to a second viewer of the display.

14. The method of claim 10, wherein the non-constant crosstalk correction function is a non-linear function.

15. The method of claim 10, wherein the non-constant remapping function comprises a linear remapping.

16. The method of claim 10, wherein the non-constant remapping function comprises a curved remapping.

17. The method of claim 10, wherein the conditioning step further comprises adjusting the color intensity based upon user feedback concerning perceived crosstalk reduction of the first and second image views.

18. The method of claim 10, wherein remapping step comprises generating the new pixel luminance values within a sub-range of a full range of the pixel luminance values.

19. A computer program product containing instructions in a computer-readable media for use in controlling the operation of a processor to perform the steps of:

providing an image stream to a display, the display comprising a horizontal dimension that extends from a first side of the display to an opposing second side of the display, the image stream comprising a temporal sequence of images where at least a first image view and then a second image view is displayed on the display in a time sequential manner;

remapping pixel luminance values for the first image view and the second image view by applying a non-constant remapping function to original pixel luminance values of the first image view and the second image view; and

conditioning the temporal sequence of images before the temporal sequence of images is displayed on the display to reduce perceived displayed image crosstalk between the at least first image view and the second image view, the conditioning comprising modifying a color intensity of, at least selected, pixels along the horizontal dimension based on a non-constant crosstalk correction function for the horizontal dimension.

20. A computer program product containing instructions in a computer-readable media for use in controlling the operation of a processor to perform the steps of:

providing an image stream to a display, the display comprising a horizontal dimension that extends from a first side of the display to an opposing second side of the display, the image stream comprising a temporal sequence of images where at least a first image view and then a second image view is displayed on the display in a time sequential manner;

remapping pixel luminance values for the first image view and the second image view by applying a non-constant remapping function to original pixel luminance values of the first image view and the second image view in order to generate new pixel luminance values; and

conditioning the first image view and the second image view of the image stream before the image stream is displayed on the display to reduce perceived displayed image crosstalk between the first image view and second image view, the conditioning comprising modifying a color intensity of, at least selected, pixels along the horizontal dimension based on a non-constant crosstalk correction function for the horizontal dimension, and rescaling a color intensity range of the first image view and second image view so that the modified color intensity is within the color intensity range.

21. A method of reducing perceived image crosstalk in a multiview display comprising:

providing an image stream to a display, the display comprising a horizontal dimension that extends from a first side of the display to an opposing second side of the display, the image stream comprising a temporal sequence of images where at least a first image view and then a second image view is displayed on the display in a time sequential manner; and

conditioning the temporal sequence of images before the temporal sequence of images is displayed on the display to reduce perceived displayed image crosstalk between the at least first image view and the second image view, the conditioning comprising modifying a color intensity of, at least selected, pixels along the horizontal dimension based on a non-constant crosstalk correction function for the horizontal dimension and based upon user feedback concerning perceived crosstalk reduction of the first and second image views.

22. The method of claim 21, further comprising displaying to the user a series of test image views with varying amounts of perceived crosstalk reduction.

23. A method of reducing perceived image crosstalk in a multiview display comprising:

providing an image stream to a display, the display comprising a horizontal dimension that extends from a first side of the display to an opposing second side of the display, the image stream comprising a temporal sequence of images where at least a first image view and then a second image view is displayed on the display in a time sequential manner; and

conditioning the temporal sequence of images before the temporal sequence of images is displayed on the display to reduce perceived displayed image crosstalk between the at least first image view and the second image view, the conditioning comprising modifying a color intensity of, at least selected, pixels along the horizontal dimension based upon user feedback concerning perceived crosstalk reduction of the first and second image views.

24. The method of claim 23, further comprising displaying to the user a series of test image views with varying amounts of perceived crosstalk reduction.