Tracking input device
First Claim
1. An image input device comprising:
- imaging means for imaging a picture including an object image which is to undergo diagnosis, which object varies in position and configuration over time to define a variational portion in which the object image varies over time;
object extracting means for extracting the variational portion within the object image by determining the difference in brightness between two pictures obtained by said imaging means;
position judging means for judging whether or not the object image variational portion extracted is located within a picture screen; and
control means for controlling the imaging conditions of said imaging means, in accordance with the results of the judgment made by said position judging means such that the control means moves said imaging means in a direction parallel to the plane on which the object image is imaged, where the object image variational portion is partly or wholly lost from the picture screen.
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Accused Products
Abstract
Disclosed is an image input device arranged in such a way that a fluorescent X-ray image is imaged by a TV camera, and an image signal thereof is input into a CPU. The image input device is connected to an output of the TV camera, and comprises a difference circuit for determining the difference between two picture signals obtained at a prescribed time interval, an object extracting circuit for extracting an object image in accordance with the results of the difference, a position judging circuit for judging whether or not the object image thus extracted is located within a picture screen, and a camera position controller for controlling the position of the TV camera in accordance with the results of judgement made by the position judging circuit.
21 Citations
5 Claims
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1. An image input device comprising:
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imaging means for imaging a picture including an object image which is to undergo diagnosis, which object varies in position and configuration over time to define a variational portion in which the object image varies over time; object extracting means for extracting the variational portion within the object image by determining the difference in brightness between two pictures obtained by said imaging means; position judging means for judging whether or not the object image variational portion extracted is located within a picture screen; and control means for controlling the imaging conditions of said imaging means, in accordance with the results of the judgment made by said position judging means such that the control means moves said imaging means in a direction parallel to the plane on which the object image is imaged, where the object image variational portion is partly or wholly lost from the picture screen. - View Dependent Claims (2, 3, 4, 5)
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Specification