Abstract: A projector includes an imaging unit which images a screen SC, and a position detection unit which detects an indication position of an indicator based on a captured image of the imaging unit. The position detection unit detects reflected light of detection light reflected by the indicator from the captured image of the imaging unit and obtains the indication position of the indicator based on the position of the reflected light detected from the captured image and the distance between the screen SC and the imaging unit.

Abstract: A visual system includes one or more units, where each unit is a displaying unit or a video camera, or a combination of both, and each unit has a receiver. The unit has a transmitter which starts transmitting infrequent, short repetitive bursts if no bursts are received by the receiver; and otherwise transmits a delayed short burst synchronized to the infrequent, short repetitive bursts by the transmitter, in order to synchronize all units in the visual system to each other, while the infrequent, short repetitive bursts will not interfere nor will be interfered by the general use of remote controllers for other purposes.

Abstract: An interactive projector includes a projection unit that projects the projected screen on a screen surface, a plurality of cameras that include a first camera and a second camera capturing an image of an area of the projected screen, a position detection unit that detects a three-dimensional position of the pointing element with respect to the projected screen based on a plurality of images including the pointing element of which the image is captured by the plurality of cameras, and a contact detection unit that detects contact with the projected screen of a pointing element, and the contact detection unit detects contact of the self-light emitting pointing element with the projected screen based on the light emitting pattern and detects contact of the non-light-emitting pointing element with the projected screen based on the three-dimensional position detected by the position detection unit.

Abstract: A projection system includes a light emitting apparatus that emits detection light to a detection area for detecting indication positions of indicators, and a projector that detects the indication positions of the indicators in the detection area. The projector includes an imaging portion that captures an image of the detection area, and a position detection portion that detects at least one of an image of light generated by the indicator and an image of the detection light reflected on the indicator from data of a captured image of the imaging portion, and discriminates and detects the indication positions of the indicator and the indicator based on light emission timings of the indicator and the light emitting apparatus.

Abstract: A position detection portion of a projector detects an operation on a screen based on a captured image obtained by capturing the screen. A control portion executes a calibration in which positions in a projection image and positions in the captured image are associated with each other based on the captured image obtained by capturing the projection image projected by a calibration control portion based on auto calibration images in which marks for specifying positions are arranged. In addition, the calibration control portion executes the calibration based on the captured image corresponding to the plurality of auto calibration images which are different in arrangement states of the marks.

Abstract: An interactive projector includes a projection unit that projects the projected screen on a screen surface, a plurality of cameras that include a first camera and a second camera capturing an image of an area of the projected screen, a position detection unit that detects a three-dimensional position of the pointing element with respect to the projected screen based on a plurality of images including the pointing element of which the image is captured by the plurality of cameras, and a contact detection unit that detects contact with the projected screen of a pointing element, and the contact detection unit detects contact of the self-light emitting pointing element with the projected screen based on the light emitting pattern and detects contact of the non-light-emitting pointing element with the projected screen based on the three-dimensional position detected by the position detection unit.

Abstract: A visual system includes one or more units, where each unit is a displaying unit or a video camera, or a combination of both, and each unit has a receiver. The unit has a transmitter which starts transmitting infrequent, short repetitive bursts if no bursts are received by the receiver; and otherwise transmits a delayed short burst synchronized to the infrequent, short repetitive bursts by the transmitter, in order to synchronize all units in the visual system to each other, while the infrequent, short repetitive bursts will not interfere nor will be interfered by the general use of remote controllers for other purposes.

Abstract: A projection system includes a light emitting apparatus that emits detection light to a detection area for detecting indication positions of indicators, and a projector that detects the indication positions of the indicators in the detection area. The projector includes an imaging portion that captures an image of the detection area, and a position detection portion that detects at least one of an image of light generated by the indicator and an image of the detection light reflected on the indicator from data of a captured image of the imaging portion, and discriminates and detects the indication positions of the indicator and the indicator based on light emission timings of the indicator and the light emitting apparatus.

Abstract: A visual system includes one or more units, where each unit is a displaying unit or a video camera, or a combination of both, and each unit has a receiver. The unit has a transmitter which starts transmitting infrequent, short repetitive bursts if no bursts are received by the receiver; and otherwise transmits a delayed short burst synchronized to the infrequent, short repetitive bursts by the transmitter, in order to synchronize all units in the visual system to each other, while the infrequent, short repetitive bursts will not interfere nor will be interfered by the general use of remote controllers for other purposes.

Abstract: A projection system includes a light emitting apparatus that emits detection light to a detection area for detecting indication positions of indicators, and a projector that detects the indication positions of the indicators in the detection area. The projector includes an imaging portion that captures an image of the detection area, and a position detection portion that detects at least one of an image of light generated by the indicator and an image of the detection light reflected on the indicator from data of a captured image of the imaging portion, and discriminates and detects the indication positions of the indicator and the indicator based on light emission timings of the indicator and the light emitting apparatus.

Abstract: A projector includes an imaging unit which images a screen SC, and a position detection unit which detects an indication position of an indicator based on a captured image of the imaging unit. The position detection unit detects reflected light of detection light reflected by the indicator from the captured image of the imaging unit and obtains the indication position of the indicator based on the position of the reflected light detected from the captured image and the distance between the screen SC and the imaging unit.

Abstract: A position detection portion of a projector detects an operation on a screen based on a captured image obtained by capturing the screen. A control portion executes a calibration in which positions in a projection image and positions in the captured image are associated with each other based on the captured image obtained by capturing the projection image projected by a calibration control portion based on auto calibration images in which marks for specifying positions are arranged. In addition, the calibration control portion executes the calibration based on the captured image corresponding to the plurality of auto calibration images which are different in arrangement states of the marks.

Abstract: A projection system includes a light emitting apparatus that emits detection light to a detection area for detecting indication positions of indicators, and a projector that detects the indication positions of the indicators in the detection area. The projector includes an imaging portion that captures an image of the detection area, and a position detection portion that detects at least one of an image of light generated by the indicator and an image of the detection light reflected on the indicator from data of a captured image of the imaging portion, and discriminates and detects the indication positions of the indicator and the indicator based on light emission timings of the indicator and the light emitting apparatus.

Abstract: A visual system includes one or more units, where each unit is a displaying unit or a video camera, or a combination of both, and each unit has a receiver. The unit has a transmitter which starts transmitting infrequent, short repetitive bursts if no bursts are received by the receiver; and otherwise transmits a delayed short burst synchronized to the infrequent, short repetitive bursts by the transmitter, in order to synchronize all units in the visual system to each other, while the infrequent, short repetitive bursts will not interfere nor will be interfered by the general use of remote controllers for other purposes.