Methods and measurement engine for aligning multi-projector display systems
First Claim
Patent Images
1. A method for aligning multi-projector display systems comprising the steps of:
- storing an image pattern description;
capturing tiled display test pattern images;
using said stored image pattern description and at least one of said captured tiled display test pattern images, identifying a tile array placement and layout;
using said stored image pattern description and at least one said captured tiled display test pattern image, performing a tile registration measurement;
using said stored image pattern description, and at least one of said captured tiled display test pattern images, performing a dot grid measurement to provide measured dot grid positions;
using at least one said captured tiled display test pattern images and said measured dot grid positions, calculating a tile-to-camera map;
using at least one of said captured tiled display test pattern images and said measured dot grid positions, calculating a camera-to-mural map; and
using said tile-to-camera map and said camera-to-mural map to generate control and correction data;
said control and correction data being applied to selectively vary alignment of a plurality of projectors by control of respective associated positioners with the plurality of projectors.
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Abstract
An image pattern description is stored and tiled display test pattern images are captured. The stored image pattern description and at least one captured tiled display test pattern image are used to identify a tile array placement and layout; a tile registration measurement; and a dot grid measurement providing measured dot grid positions. At least one captured tiled display test pattern images and the measured dot grid positions are used for calculating tile-to-camera maps and a camera-to-mural map. The tile-to-camera maps and the camera-to-mural map are used to generate control and correction data.
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Citations
20 Claims
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1. A method for aligning multi-projector display systems comprising the steps of:
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storing an image pattern description; capturing tiled display test pattern images; using said stored image pattern description and at least one of said captured tiled display test pattern images, identifying a tile array placement and layout; using said stored image pattern description and at least one said captured tiled display test pattern image, performing a tile registration measurement; using said stored image pattern description, and at least one of said captured tiled display test pattern images, performing a dot grid measurement to provide measured dot grid positions; using at least one said captured tiled display test pattern images and said measured dot grid positions, calculating a tile-to-camera map; using at least one of said captured tiled display test pattern images and said measured dot grid positions, calculating a camera-to-mural map; and using said tile-to-camera map and said camera-to-mural map to generate control and correction data;
said control and correction data being applied to selectively vary alignment of a plurality of projectors by control of respective associated positioners with the plurality of projectors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A measurement engine for aligning multi-projector display systems comprising:
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a plurality of projectors for projecting a digital source image onto multi-projector display to form a composite image; a respective positioner associated with each of said plurality of projectors; a camera for capturing tiled display test pattern images; a computer for storing an image pattern description;
said computer for performing the steps of;using said stored image pattern description and at least one of said captured tiled display test pattern images, identifying a tile array placement and layout; using said stored image pattern description and at least one said captured tiled display test pattern image, performing a tile registration measurement; using said stored image pattern description, and at least one of said captured tiled display test pattern images, performing a dot grid measurement to provide measured dot grid positions; using at least one of said captured tiled display test pattern images and said measured dot grid positions, calculating a tile-to-camera map; using at least one of said captured tiled display test pattern images and said measured dot grid positions, calculating a camera-to-mural map; and using said tile-to-camera map and said camera-to-mural map to generate control and correction data;
said control and correction data being applied to selectively vary alignment of the plurality of projectors by control of respective associated positioners.
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Specification