INFORMATION DISPLAY SYSTEM AND PROGRAM, AND OPTICAL INPUT SYSTEM, PROJECTION-TYPE IMAGES AND DISPLAY APPARATUS
First Claim
1. An information display system including a pointing device and a control apparatus for detecting a locus of tip of the pointing device, the pointing device including:
- a light emitting part configured to irradiate radiation light that radiates with the tip of the pointing device on a predetermined plane as a center,the control apparatus including;
an image pickup unit configured to pick up a region including the radiation light on the predetermined plane;
a detector configured to detect the radiation light from an image picked up by the image pickup unit; and
an estimation unit configured to estimate the position of the tip of the pointing device from the radiation light detected by the detector.
1 Assignment
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Accused Products
Abstract
An information display system includes a pointing device and a control apparatus for detecting the locus of tip of the pointing device. The pointing device includes a light emitting part for irradiating the radiated light that radiates with the tip of the pointing device as the center on a predetermined plane. A camera captures images of a region including the radiated light on the predetermined plane. A radiated light detector detects the radiated light from the images captured by the camera. An estimation unit estimates the position of the tip of the pointing device from the radiated light detected by the radiated light detector.
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Citations
20 Claims
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1. An information display system including a pointing device and a control apparatus for detecting a locus of tip of the pointing device, the pointing device including:
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a light emitting part configured to irradiate radiation light that radiates with the tip of the pointing device on a predetermined plane as a center, the control apparatus including; an image pickup unit configured to pick up a region including the radiation light on the predetermined plane; a detector configured to detect the radiation light from an image picked up by the image pickup unit; and an estimation unit configured to estimate the position of the tip of the pointing device from the radiation light detected by the detector. - View Dependent Claims (2, 3, 4, 5, 7, 8)
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6. An information display system including a pointing device and a control apparatus for detecting a locus of tip of the pointing device, the pointing device including:
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a first light-emitting part configured to form a first irradiation region along a direction of the tip thereof; a second light-emitting part configured to form a second irradiation region in such a manner as to surround the first irradiation region; and a switch configured to turn on and off either one of the first light-emitting part and the second light-emitting part, the control apparatus including; an image pickup unit configured to pick up images of the first irradiation region and the second irradiation region on a predetermined plane; a detector configured to detect the first irradiation region and the second irradiation region from an image picked up by the image pickup unit; an estimation unit configured to estimate the position of the tip of the pointing device from a position or shape of the first irradiation region or the second irradiation region; and a notification unit configured to convey an operation of the switch to an external device when the first irradiation region or the second irradiation has been detected.
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9. An optical input system, comprising:
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an image pickup unit configured to pick up an image of a luminous body itself in an input device carrying the luminous body and reflected light of light irradiated from the luminous body to a display surface; and a determining unit configured to compare a barycentric position of light of the luminous body itself with that of the reflected light in an image captured by said image pickup unit, and configured to determine that the input device and the display surface are in contact with each other when the barycentric positions thereof are associated with each other and determine that the input device and the display surface are not in contact with each other when the barycentric positions thereof are not associated with each other. - View Dependent Claims (10, 11, 12, 13)
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14. A program embedded in a non-transitory computer-readable medium and executable by a control apparatus in an information display system including the control apparatus for detecting a locus of indication point relative to a predetermined plane, the program comprising:
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a detecting module operative to detect coordinates of the indication point from an image where a region containing the indication point on the predetermined plane is captured; a drawing module operative to draw the locus of the indication point and produce an image where a predetermined icon is drawn near the indication point; and an outputting module operative to output the produced image to an image display apparatus. - View Dependent Claims (15, 16, 17, 18, 19)
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20. An information display system including a control apparatus for detecting a locus of indication point relative to a predetermined plane, the control apparatus including;
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a detector configured to detect coordinates of the indication point from an image where a region containing the indication point on the predetermined plane is captured; a drawing unit configured to draw the locus of the indication point and produce an image where a predetermined icon is drawn near the indication point; and an output unit configured to output the produced image to an image display apparatus.
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Specification