Generation of image data subsets

• US 20070132967A1
• Filed: 12/09/2005
• Published: 06/14/2007
• Est. Priority Date: 12/09/2005
• Status: Abandoned Application

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Damera-Venkata, Niranjan, Widdowson, Simon, Chang, Nelson
• Application Number:
  US11/298,190
• Publication Number:
  US 20070132967A1
• Time in Patent Office: Days
• US Class Current: 353/121
• CPC Class Codes: G03B 21/005 Projectors using an electronic spatial light modulator but not peculiar thereto

Abstract

A method comprising generating a first image data subset using image data and first noise and generating a second image data subset using the image data and second noise is provided. The first and the second image data subsets are generated to cause the first noise and the second noise to cancel in response to first and second images being simultaneously displayed in at least partially overlapping positions using the first and second image data subsets, respectively.

Claims

1. A method comprising:

generating a first image data subset using image data and first noise; and

generating a second image data subset using the image data and second noise;

wherein the first and the second image data subsets are generated to cause the first noise and the second noise to cancel in response to first and second images being simultaneously displayed in at least partially overlapping positions using the first and second image data subsets, respectively.

2. The method of claim 1 wherein the first image data subset is generated to cause the first noise to be visible in response to the first image being displayed separately from the second image, and wherein the second image data subset is generated to cause the second noise to be visible in response to the second image being displayed separately from the first image.

3. The method of claim 1 wherein the first noise causes the first image to be visibly degraded in response to the first image being displayed separately from the second image, and wherein the second noise causes the second image to be visibly degraded in response to the second image being displayed separately from the first image.

4. The method of claim 1 further comprising:

encrypting the first image data subset; and

encrypting the second image data subset.

5. The method of claim 1 further comprising:

forming the image data using a function that varies spatio-temporally.

6. The method of claim 1 wherein the image data is formed using a function that varies spatio-temporally.

7. The method of claim 1 further comprising:

providing the first and the second image data subsets to an image display system that includes the first and the second projection devices.

8. The method of claim 1 further comprising:

defining a first sub-frame using the first image data subset;

defining a second sub-frame using the second image data subset; and

simultaneously displaying the first and the second images with the first and the second projection devices, respectively, using the first and the second sub-frames, respectively, in at least partially overlapping positions.

9. The method of claim 8 further comprising:

defining the first and the second sub-frames according to a relationship between the first and the second projection devices.

10. The method of claim 1 further comprising:

generating the first image data subset by adding the first noise to the image data; and

generating the second image data subset by adding the second noise to the image data.

11. A system comprising:

a first subset unit configured to generate a first image data subset using image data and first noise; and

a second subset unit configured to generate a second image data subset using the image data and second noise;

wherein the first subset unit is configured to generate the first image data subset to cause the first noise to not be visible in response to first and second images being simultaneously displayed using the first and the second image data subsets, respectively, in at least partially overlapping positions.

12. The system of claim 11 wherein the second subset unit is configured to generate the second image data subset to cause the second noise to not be visible in response to the first and the second images being simultaneously displayed using the first and the second image data subsets, respectively, in the at least partially overlapping positions.

13. The system of claim 11 further comprising:

a noise unit configured to provide the first noise and the second noise to the first subset unit and the second subset unit, respectively.

14. The system of claim 13 wherein the first subset unit is configured to add the first noise to the image data to generate the first image data subset, and wherein the second subset unit is configured to add the second noise to the image data to generate the first image data subset.

15. The system of claim 14 wherein a sum of the first noise and the second noise is equal to zero.

16. The system of claim 11 wherein the first subset unit is configured to generate the first image data subset to cause the first noise to be visible in response to the first image being displayed separately from the second image, and wherein the second subset unit is configured to generate to cause the second noise to be visible in response to the second image being displayed separately from the first image.

17. The system of claim 11 wherein the first noise causes the first image to be visibly degraded in response to the first image being displayed separately from the second image, and wherein the second noise causes the second image to be visibly degraded in response to the second image being displayed separately from the first image.

18. A method of displaying an image with a display system, the method comprising:

defining a first sub-frame using a first image data subset that is generated from image data and first added noise;

defining a second sub-frame using a second image data subset that is generated from the image data and second added noise; and

projecting the first and the second sub-frames onto a display surface using first and the second projection devices, respectively, such that the first and the second sub-frames at least partially overlap on the display surface and the first added noise and the second added noise are not visible.

19. The method of claim 18 further comprising:

defining the first sub-frame using the first image data subset and the image data; and

defining the second sub-frame using the second image data subset and the image data.

20. The method of claim 18 further comprising:

generating the first and the second sub-frames based on a relationship between the first projection device and the second projection device;

wherein the relationship includes at least one of a geometric relationship between the first projection device and the second projection device, color types of the first projection device and the second projection device, a luminance distribution between the first projection device and the second projection device, and lens settings of the first projection device and the second projection device.