Projection system with image orientation correction and corresponding method
AssigneeMicrovision, Inc.
InventorsRay L. Nicoli, Andrew T. Rosen, David Lashmet
Life of this patent
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Abstract
An image projection system (103) includes an image projector (104) and an image orientation device (106). The image orientation device (106) can be configured to cause a reference line (110) associated with an image (108) to remain aligned in a predetermined orientation on a projection surface (109) regardless of projection system motion. A second image orientation device (206) can be included as well. The second image orientation device (206) can be configured to cause portions of an image (208) to move with projection system motion while a reference line (210) remains stable.
Claims21
A projection system comprising:
- an image projector to project video content;
- a processor to compare successive images of the video content to determine a non-changing portion, and to assign an object within the non-changing portion as a reference line;
- at least one sensor to detect position, motion, or orientation of the image projector;
- and
- an image orientation device configured to modify the video content in response to information provided by the at least one sensor to cause the reference line projected by the image projector to remain aligned in a predetermined orientation along a projection surface regardless of yaw, pitch, or roll corresponding to the image projector.
A method of projecting video content from a projection device, comprising:
- comparing successive images of the video content to determine a non-changing portion;
- assigning an object within the non-changing portion as a reference line;
- detecting a projection device orientation;
- modifying the video content in response to the device orientation to cause at least the reference line within the image to be presented relative to the projection device orientation so as to have a predetermined projection surface orientation;
- and
- modifying the video content in response to the device orientation to cause the reference line to remain in the predetermined projection surface orientation as the projection device orientation changes.
A projection system comprising:
- an image projection device to project video content;
- a processor to compare successive images of the video content to determine a non-changing portion, and to assign an object within the non-changing portion as a reference line;
- at least one sensor to detect position, motion, or orientation of the image projector;
- and
- a first image orientation device configured to modify the video content in response to information provided by the at least one sensor to cause at least one portion of an image generated by the image projection device corresponding to the reference line within the image to remain aligned in a predetermined orientation during movement of the projection system;
- and
- a second image orientation device configured to modify the video content in response to information provided by the at least one sensor to cause at least one other portion of the image to change orientation based at least in part on movement of the projection system.
Dependencies are inferred from the claim text.