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US 9,319,649 B2Granted
Projector drift corrected compensated projection
AssigneeDisney Enterprises, Inc.
InventorAnselm Grundhofer
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Abstract
The present invention relates generally to adjusting projected images from a projector. A projected image is compensated to neutralize effects of a projection surface and optimized based on anticipated pixel drift movement.
Claims22
A projection method, comprising
- compensating an input image based on at least one characteristic of a projection surface to form a compensation image;
- optimizing the compensation image based on a pixel drift estimation to form an optimized compensation image, wherein the pixel drift estimation corresponds to estimated movement of at least one of the compensation image or the projection surface during projection of the compensation image;
- and
- projecting the optimized compensation image onto the projection surface.
1 more element
A projection method comprising
- compensating an input image based on at least one characteristic of a projection surface to form a compensation image;
- determining a drift map for a plurality of projector pixels to form a pixel drift estimation, each drift map including pixel drift locations each assigned a probability that represents a likelihood that the projector pixel will drift to the pixel drift location;
- optimizing the compensation image based on the pixel drift estimation to form an optimized compensation image;
- and projecting the optimized compensation image onto the projection surface.
1 more element
A projection method, comprising
- calculating a drift map for each of a plurality of projector pixels, each drift map including pixel drift locations each assigned a probability that represents a likelihood that the projector pixel will drift to the pixel drift location;
- and
- determining an intensity for each color channel of each projector pixel by applying the drift maps to a per-pixel color mapping data set used to color compensate an input image based on colors of a projection surface.
A projection method, comprising
- sampling over time of plurality of movements of a pixel between a projector plane and a camera plane;
- for each location to which the pixel moved at least once, storing the location as a pixel drift location;
- for each pixel drift location, storing a probability that represents a frequency with which the pixel moved to the pixel drift location to form a pixel drift map;
- and
- selecting an intensity for the color channels of the pixel based on the pixel drift map and a color mapping for the pixel from the projector plane to the camera plane across a projection surface.
2 more elements
Dependencies are inferred from the claim text.