PROJECTION DISPLAY APPARATUS AND DISPLAY METHOD
First Claim
1. A projection display apparatus for displaying an image on a projection plane by projection, comprising:
- an image capturing unit capturing an image;
an angle calculator calculating an angle of the projection plane relative to the projection display apparatus;
a straight line detector detecting a straight line in the captured image corresponding to a line perpendicular to a predetermined reference plane and a straight line in the captured image corresponding to a line parallel to the predetermined reference plane on the basis of the calculated angle; and
a keystone corrector correcting a keystone distortion of an image to be displayed on the projection plane on the basis of the detection result in the straight line detector.
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Accused Products
Abstract
A projection display apparatus for displaying an image on a projection plane by projection, includes: an image capturing unit capturing an image; an angle calculator calculating an angle of the projection plane relative to the projection display apparatus; a straight line detector detecting a straight line in the captured image corresponding to a line perpendicular to a predetermined reference plane and a straight line in the captured image corresponding to a line parallel to the predetermined reference plane on the basis of the calculated angle; and a keystone corrector correcting a keystone distortion of an image to be displayed on the projection plane on the basis of the detection result in the straight line detector.
21 Citations
10 Claims
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1. A projection display apparatus for displaying an image on a projection plane by projection, comprising:
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an image capturing unit capturing an image; an angle calculator calculating an angle of the projection plane relative to the projection display apparatus; a straight line detector detecting a straight line in the captured image corresponding to a line perpendicular to a predetermined reference plane and a straight line in the captured image corresponding to a line parallel to the predetermined reference plane on the basis of the calculated angle; and a keystone corrector correcting a keystone distortion of an image to be displayed on the projection plane on the basis of the detection result in the straight line detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A display method of displaying an image on a projection plane by projection, comprising:
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(a) capturing an image; (b) calculating an angle of the projection plane relative to the optical axis of the projection; (c) detecting a straight line in the captured image corresponding to a line perpendicular to a predetermined reference plane and a straight line in the captured image corresponding to a line parallel to the predetermined reference plane on the basis of the calculated angle; and (d) correcting a keystone distortion of an image to be displayed on the projection plane on the basis of the detection result of the straight lines.
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Specification