Overlapped multi-projector system with dithering
First Claim
1. A method of displaying a high-resolution image, comprising:
- receiving a high-resolution image frame representative of a high-resolution image;
generating a low-resolution sub-frame for each projector of a multi-projector display system based on the high-resolution image frame, each low-resolution sub-frame comprising a plurality of pixels with each pixel having an intensity level, wherein each projector projects a maximum number of unique intensity levels;
dithering the intensity levels of the pixels of each low-resolution sub-frame to one of the unique intensity levels of the associated projector differently for each projector to form a dithered low-resolution sub-frame such that the dithered low-resolution sub-frames, when simultaneously projected in an overlapping fashion, form a projected image representative of the high-resolution image and having a maximum number of unique projected intensity levels substantially equal to a sum of the maximum number of unique intensity levels of all the projectors.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of displaying a high-resolution image with a multi-projector display system, including receiving a high-resolution image frame representative of a high-resolution image and generating a low-resolution sub-frame for each projector of a multi-projector display system based on the high-resolution image frame, each low-resolution sub-frame including a plurality of pixels with each pixel having an intensity level, wherein each projector projects a maximum number of unique intensity levels. The method further includes dithering the intensity levels of the pixels of each low-resolution sub-frame to one of the unique intensity levels of the associated projector differently for each projector to form a dithered low-resolution sub-frame such that the dithered low-resolution sub-frames, when simultaneously projected in an overlapping fashion, form a projected image representative of the high-resolution image and having a maximum number of unique projected intensity levels substantially equal to a sum of the maximum number of unique intensity levels of all the projectors.
-
Citations
24 Claims
-
1. A method of displaying a high-resolution image, comprising:
-
receiving a high-resolution image frame representative of a high-resolution image; generating a low-resolution sub-frame for each projector of a multi-projector display system based on the high-resolution image frame, each low-resolution sub-frame comprising a plurality of pixels with each pixel having an intensity level, wherein each projector projects a maximum number of unique intensity levels; dithering the intensity levels of the pixels of each low-resolution sub-frame to one of the unique intensity levels of the associated projector differently for each projector to form a dithered low-resolution sub-frame such that the dithered low-resolution sub-frames, when simultaneously projected in an overlapping fashion, form a projected image representative of the high-resolution image and having a maximum number of unique projected intensity levels substantially equal to a sum of the maximum number of unique intensity levels of all the projectors. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method of jointly determining dither arrays for a multi-projector display system, comprising:
-
generating a low-resolution sub-frame for each projector of the multi-projector display system based on a high-resolution image frame, wherein the low-resolution sub-frames together form a simulated high-resolution image frame; providing a dither array having a dither pattern for each of the projectors, each dither array having an initial dither pattern; selecting one of the projectors; applying each dither array to the low-resolution sub-frame of the corresponding projector to generate a dithered low-resolution sub-frame; generating a dithered high-resolution image frame based on the dithered low-resolution sub-frames of each of the projectors; and determining an error between the dithered high-resolution image frame and the simulated high-resolution image frame. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
-
-
16. A method of determining dither arrays for projectors of an overlapping multi-projector display system, the method comprising:
-
generating a low-resolution sub-frame for each projector of the multi-projector display system based on a high-resolution image frame, wherein the low-resolution sub-frames together form a simulated high-resolution image frame; selecting one of the projectors; applying a dither array having a dither pattern to the low-resolution sub-frame of the selected projector to generate a dithered low-resolution sub-frame; generating a dithered high-resolution image frame based on the dithered low-resolution sub-frame of the selected projector and the low-resolution sub-frames of the non-selected projectors; and determining an error between the dithered high-resolution image frame and the simulated high-resolution image frame. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
-
-
24. A display system for displaying a high-resolution image, comprising:
-
a plurality of projection devices, each projection device capable of projecting a maximum number of unique intensity levels and having a dither array stored therein; a buffer configured to receive a high-resolution image frame representative of a high resolution image; and a sub-frame generator configured to generate with an image formation model a low-resolution sub-frame for each projector such that that the low-resolution sub-frames together form a simulated high-resolution image frame which is optimal relative to the high-resolution image frame, wherein each low-resolution sub-frame includes a plurality of pixels each having an intensity level, and configured to dither the intensity level of each pixel of each low-resolution sub-frame to one of the unique intensity levels of the associated projection device using the corresponding dither array having a dither pattern to form corresponding dithered low-resolution sub-frames, wherein the dither patterns of the dither arrays are jointly configured such that the dithered low-resolution sub-frames, when simultaneously projected in an overlapping fashion, form a projected image representative of the high-resolution image and having a maximum number of unique projected intensity levels substantially equal to a sum of the maximum number of unique intensity levels of all of the projection devices.
-
Specification