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US 2010/0061659 A1Published application
Method and apparatus for depth sensing keystoning
AssigneeApple Inc.
InventorsBrandon Dean Slack, Aaron Leiba, Alex J. Crumlin, Jason Medeiros
Life of this patent
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Abstract
A method for depth sensing keystoning. The method of depth sensing keystoning may include an optical system and electrical devices. The method of depth sensing keystoning may correct for image distortion using depth measurements.
Claims21
A computer-implemented method for correcting image distortion in an image projected on a surface, comprising the operations of:
- measuring a first distance between an image projection system and the surface, using a first measurement device to measure the first distance;
- measuring a second distance between the image projection system and the surface, using a second measurement device to measure the second distance;
- calculating a horizontal slope of the surface with respect to a projection path of the image projection system;
- creating a transform using at least the horizontal slope and the vertical slope;
- and
- applying the transform to a first image, thereby creating a second image.
3 more elements
A computer-implemented method for calibrating an image projection system, comprising:
- capturing at least a first image and a second image using at least a camera;
- determining a first set of points from the first image using at least the computer system;
- determining a second set of points from the second image using at least the computer system;
- creating a first transform using the computer system, the first transform mapping the first set of points to a third set of points on a third image;
- creating a second transform using the computer system, the second transform mapping the second set of points to a fourth set of points on a fourth image;
- creating a final transform using the computer system, using the first transform and an inverted second transform;
- and
- applying an inverted final transform to the third image, using the computer system to apply the inverted final transform.
5 more elements
An image processing system comprising:
- a plurality of sensors operative to perform at least depth measurements;
- an image processor operative to at least receive depth measurements from the plurality of sensors and to calculate image transforms;
- and
- an image projection system operative to project at least a first image.
1 more element
Dependencies are inferred from the claim text.