Automatic-tracking camera apparatus
First Claim
1. An automatic-tracking apparatus comprising:
- an image pickup unit adapted to acquire an image;
an actuator adapted to change a position of said image pickup unit;
a position detecting unit adapted to detect the position of said image pickup unit;
a position instruction value generation unit adapted to generate a position instruction value, for instructing a target position of said image pickup unit, realizing after a lapse of a predetermined time period from when said image pickup unit has acquired the image, on the basis of the image acquired by said image pickup unit and the position of said image pickup unit detected by said position detecting unit;
a speed prediction unit adapted to predict a speed of a tracking target object realizing after a lapse of a predetermined time period from when said image pickup unit has acquired the image, using previously stored position information and speed information of the tracking target object, the position information and speed information obtained from multiple acquired images; and
a control unit adapted to control said actuator so that said image pickup unit reaches the position indicated by the position instruction value realizing after a lapse of a predetermined time period from when said image pickup unit has acquired the image, and the speed of said image pickup unit realizing after a lapse of a predetermined time period from when said image pickup unit has acquired the image corresponds to the speed predicted by said speed prediction unit,wherein said control unit is adapted to control said actuator so that said image pickup unit is displaced at a constant acceleration during the period from the start timing of image acquisition by said image pickup unit to the next start timing of image acquisition.
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Abstract
An automatic-tracking camera apparatus which is capable of realizing continuous and smooth driving and obtaining an image with little position variation of a tracking target from a target position within the image and with little blur. The position of a camera body is changed by a gimbal device. The speed of a tracking target object at the next-after-next start timing of image acquisition by the camera body is predicted. The gimbal device is controlled so that the camera body reaches the position indicated by a position instruction value generated for the next-after-next start timing of image acquisition by the camera body, at the next-after-next start timing, and the speed of the camera body at the next-after-next start timing of image acquisition by the camera body corresponds to the speed predicted for the next-after-next timing of image acquisition.
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Citations
10 Claims
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1. An automatic-tracking apparatus comprising:
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an image pickup unit adapted to acquire an image; an actuator adapted to change a position of said image pickup unit; a position detecting unit adapted to detect the position of said image pickup unit; a position instruction value generation unit adapted to generate a position instruction value, for instructing a target position of said image pickup unit, realizing after a lapse of a predetermined time period from when said image pickup unit has acquired the image, on the basis of the image acquired by said image pickup unit and the position of said image pickup unit detected by said position detecting unit; a speed prediction unit adapted to predict a speed of a tracking target object realizing after a lapse of a predetermined time period from when said image pickup unit has acquired the image, using previously stored position information and speed information of the tracking target object, the position information and speed information obtained from multiple acquired images; and a control unit adapted to control said actuator so that said image pickup unit reaches the position indicated by the position instruction value realizing after a lapse of a predetermined time period from when said image pickup unit has acquired the image, and the speed of said image pickup unit realizing after a lapse of a predetermined time period from when said image pickup unit has acquired the image corresponds to the speed predicted by said speed prediction unit, wherein said control unit is adapted to control said actuator so that said image pickup unit is displaced at a constant acceleration during the period from the start timing of image acquisition by said image pickup unit to the next start timing of image acquisition. - View Dependent Claims (2, 3)
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4. An automatic-tracking method for an apparatus having an image pickup unit adapted to acquire an image and an actuator adapted to change the position of said image pickup unit, comprising steps of:
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a position detecting step of detecting the position of said image pickup unit; a position instruction value generation step of generating a position instruction value, for instructing a target position of said image pickup unit, realizing after a lapse of a predetermined time period from when said image pickup unit has acquired the image, on the basis of the image acquired by said image pickup unit and the position of said image pickup unit; a speed prediction step of predicting a speed of a tracking target object realizing after a lapse of a predetermined time period from when said image pickup unit has acquired the image, using previously stored position information and speed information of the tracking target object, the position information and speed information obtained from multiple acquired images; and a control step of controlling said actuator so that said image pickup unit reaches the position indicated by the position instruction value realizing after a lapse of a predetermined time period from when said image pickup unit has acquired the image, and the speed of said image pickup unit realizing after a lapse of a predetermined time period from when said image pickup unit has acquired the image corresponds to the predicted speed, wherein said control step controls said actuator so that said image pickup unit is displaced at a constant acceleration during the period from the start timing of image acquisition by said image pickup unit to the next start timing of image acquisition. - View Dependent Claims (5, 6, 7, 8)
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9. An automatic-tracking apparatus comprising:
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an image pickup unit adapted to acquire an image; an actuator adapted to change a position of said image pickup unit; a position detecting unit adapted to detect the position of said image pickup unit; and a control unit adapted to predict a speed of a tracking target object realizing after a lapse of a predetermined time period from when said image pickup unit has acquired the image, using previously stored position information and speed information of the tracking target object, the position information and speed information obtained from multiple acquired images, and control said actuator so that said image pickup unit reaches the speed of said image pickup unit realizing after a lapse of a predetermined time period from when said image pickup unit has acquired the image corresponds to the predicted speed, wherein said control unit is adapted to control said actuator so that said image pickup unit is displaced at a constant acceleration during the period from the start timing of image acquisition by said image pickup unit to the next start timing of image acquisition.
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10. An automatic-tracking method for an apparatus having an image pickup unit adapted to acquire an image and an actuator adapted to change the position of said image pickup unit, comprising steps of:
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a position detecting step of detecting the position of said image pickup unit; and
a control step of predicting a speed of a tracking target object realizing after a lapse of a predetermined time period from when said image pickup unit has acquired the image, using previously stored position information and speed information of the tracking target object, the position information and speed information obtained from multiple acquired images, and controlling said actuator so that said image pickup unit reaches the speed of said image pickup unit realizing after a lapse of a predetermined time period from when said image pickup unit has acquired the image corresponds to the predicted speed,wherein said actuator is controlled so that said image pickup unit is displaced at a constant acceleration during the period from the start timing of image acquisition by said image pickup unit to the next start timing of image acquisition.
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Specification