Automatic projection focusing
First Claim
Patent Images
1. A system comprising:
- one or more processors;
a camera;
a projector; and
one or more non-transitory computer-readable storage media storing computer-executable instructions that are executable by the one or more processors to cause the one or more processors to;
cause the projector to project an image on a surface;
capture image information of the image, the image information representative of one or more objects within the image;
determine motion information associated with the image based at least in part on the image information;
determine, based at least in part upon the motion information, a region in the image for monitoring;
detect that a change in an image attribute associated with the region meets or exceeds a first threshold; and
adjust a focus parameter of the projector and project the image on the surface using the focus parameter, the focus parameter including at least one of a position setting or a motor setting of the projector.
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Abstract
Techniques are described for performing automatic focusing of a projected image on a mobile projection surface. Specific regions of the projected image are identified that are likely to be desired to stay in optimal focus, and attributes of those specific regions, such as sharpness and contrast, can be used to determine the need to refocus the image. Advanced knowledge of the image data being projected can be utilized to determine the specific regions of the projected image that require monitoring for optimal focusing.
21 Citations
20 Claims
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1. A system comprising:
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one or more processors; a camera; a projector; and one or more non-transitory computer-readable storage media storing computer-executable instructions that are executable by the one or more processors to cause the one or more processors to; cause the projector to project an image on a surface; capture image information of the image, the image information representative of one or more objects within the image; determine motion information associated with the image based at least in part on the image information; determine, based at least in part upon the motion information, a region in the image for monitoring; detect that a change in an image attribute associated with the region meets or exceeds a first threshold; and adjust a focus parameter of the projector and project the image on the surface using the focus parameter, the focus parameter including at least one of a position setting or a motor setting of the projector. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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under control of one or more computer systems configured with executable instructions; projecting an image on a surface; capturing data associated with the image; selecting a region associated with the image to be monitored; detecting a change in an image attribute of the image within the region, the change greater than a threshold associated with the image attribute; and adjusting a focus of a projector based at least in part on the threshold being met or exceeded. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A computing device comprising:
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one or more processors; a sensor to capture image data; a projector to project an image onto a surface; and one or more non-transitory computer-readable storage media storing computer-executable instructions that are executable by the one or more processors to cause the one or more processors to; determine, from the image data, a region in the image that is to be monitored; and adjust an attribute of the image based at least in part on detecting a reduction in image quality greater than or equal to the threshold. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification