Projection of overlapping sub-frames onto a surface

• US 20070133794A1
• 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: Lin, I-Jong, Damera-Venkata, Niranjan, Chang, Nelson, Allen, William, Cloutier, Frank, Smouse, Evan
• Application Number:
  US11/298,233
• Publication Number:
  US 20070133794A1
• Time in Patent Office: Days
• US Class Current: 380/200
• CPC Class Codes: G03B 21/13 Projectors for producing special effects at the edges of picture, e.g. blurring
• CPC Class Codes: H04N 9/3147 Multi-projection systems displays in general H04N9/12; video walls G06F3/1446, G09G2300/026

Abstract

A method of displaying an image with a display system is provided. The method comprises generating first and second sub-frames using first and second subsets of image data based on a relationship between a first projection device and a second projection device, wherein the first and the second subsets of image data individually include insufficient information to provide a high quality reproduction of the image; and projecting the first and the second sub-frames onto a display surface using the first and the second projection devices, respectively, such that the first and the second sub-frames at least partially overlap on the display surface to provide the high quality reproduction of the image.

Claims

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

generating first and second sub-frames using first and second subsets of image data based on a first relationship between a first projection device and a second projection device, wherein the first and the second subsets of image data individually include insufficient information to provide a high quality reproduction of the image; and

projecting the first and the second sub-frames onto a display surface using the first and the second projection devices, respectively, such that the first and the second sub-frames at least partially overlap on the display surface to provide the high quality reproduction of the image.

2. The method of claim 1 wherein the first subset of the image data comprises a first range of grayscale values, and wherein the second subset of the image data comprises a second range of grayscale values that differs from the first range of grayscale values.

3. The method of claim 1 wherein the first subset of the image data comprises a first color plane, and wherein the second subset of the image data comprises a second color plane.

4. The method of claim 1 wherein the first subset of the image data is generated to include a first portion of random noise, and wherein the second subset of the image data is generated to include a second portion of random noise.

5. The method of claim 1 wherein the first subset of the image data is generated to include a first set of component frames for each image in the image data, and wherein the second subset of the image data is generated to include a second set of component frames for each image in the image data.

6. The method of claim 1 further comprising:

decrypting the first subset of the image data using a first encryption key; and

decrypting the second subset of the image data using a second encryption key.

7. The method of claim 1 wherein the first and the second sub-frames do not provide the high quality reproduction of the image when displayed with third and fourth projection devices having a second relationship between the third and the fourth projection devices that differs from the first relationship.

8. The method of claim 1 wherein the first and the second sub-frames do not provide the high quality reproduction of the image when image processing is performed on the first and the second sub-frames without using the first relationship between the first projection device and the second projection device.

9. The method of claim 1 wherein the first 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.

10. The method of claim 1 further comprising:

receiving the first subset of the image data from a security processing unit; and

receiving the second subset of the image data from the security processing unit.

11. A system for displaying an image, the system comprising:

a sub-frame generation system; and

first and second projection devices;

wherein the sub-frame generation system is configured to define first and second sub-frames using first and second subsets of image data for the image based on a relationship between the first and the second projection devices, wherein the first and the second subsets of image data individually include insufficient information to provide a high quality reproduction of the image, and wherein the first and the second projection devices are adapted to project the first and the second sub-frames onto a display surface such that the second sub-frame at least partially overlaps the first sub-frame to provide the high quality reproduction of the image.

12. The system of claim 11 wherein the first subset of the image data comprises a first range of grayscale values, and wherein the second subset of the image data comprises a second range of grayscale values that differs from the first range of grayscale values.

13. The system of claim 11 wherein the first subset of the image data comprises a first color plane, and wherein the second subset of the image data comprises a second color plane.

14. The system of claim 11 wherein the first subset of the image data is generated to include a first portion of random noise, and wherein the second subset of the image data is generated to include a second portion of random noise.

15. The system of claim 11 wherein the sub-frame generation system is configured to decrypt the first subset of the image data using a first encryption key, and wherein the sub-frame generation system is configured to decrypt the second subset of the image data using a second encryption key.

16. A method comprising:

generating a first image data subset from image data such that the first image data subset includes insufficient information to provide a high quality reproduction of an image represented by the image data; and

generating a second image data subset from the image data such that the second image data subset includes insufficient information to provide the high quality reproduction of the image represented by the image data.

17. The method of claim 16 wherein the first image data subset comprises a first range of grayscale values, and wherein the second image data subset comprises a second range of grayscale values that differs from the first range of grayscale values.

18. The method of claim 16 wherein the first image data subset comprises a first color plane, and wherein the second image data subset comprises a second color plane.

19. The method of claim 16 wherein the first image data subset is generated to include a first portion of random noise, and wherein the second image data subset is generated to include a second portion of random noise.

20. The method of claim 16 further comprising:

encrypting the first image data subset using a first encryption key; and

encrypting the second image data subset using a second encryption key.