Surveillance camera apparatus and surveillance camera system
First Claim
1. A surveillance camera apparatus comprising:
- a wide-angle camera that converts an optical image obtained through a wide-angle lens into a first image signal, the wide-angle camera that outputs the first image signal, an optical axis of the wide-angle camera being fixed in a constant direction;
a telephotographic camera that converts an optical image obtained through a telephotographic lens into a second image signal, the telephotographic camera that outputs the second image signal, the telephotographic camera supported to be rotatable around at least one pivot axis so that an optical axis of the telephotographic camera can be tilted and panned;
a directivity information calculating unit that identifies an image of a moving object within a image-capturing range of the wide-angle camera based on the first image signal from the wide-angle camera, the directivity information calculating unit that calculates directivity information corresponding to a position of the image of the moving object within the image-capturing range;
a camera posture control unit that rotates the telephotographic camera around the pivot axis in accordance with the directivity information so as to direct the optical axis of the telephotographic camera at the moving object captured by the wide-angle camera; and
a tracking information calculating unit that calculates tracking information, which is used to direct the optical axis of the telephotographic camera so as to place the image of the moving object at a center region of a image-capturing range of the telephotographic camera, based on second image signals sequentially output from the telephotographic camera, wherein;
after the tracking information is calculated, the camera posture control unit is controlled in real time using the tracking information in place of the directivity information and the telephotographic camera continuously captures the moving object, andwherein the tracking information includes a movement vector of the moving object, and the movement vector is calculated based on the second image signal and an automatically adjustable magnification of the telephotographic camera based on a size of the captured moving object.
2 Assignments
0 Petitions
Accused Products
Abstract
A wide-angle camera is fixed to direct an optical axis in a fixed direction. A telephotographic camera can be inclined in panning and tilting directions to change an aiming direction of its optical axis. An image signal from the wide-angle camera is evaluated. When an image of a moving object is identified in a frame captured by the wide-angle camera, directivity information corresponding to a position of the moving object is calculated based on a relative position to the center of the frame. In accordance with the directivity information, posture of the telephotographic camera is controlled to aim its optical axis at the moving object. Thereafter, the posture of the telephotographic camera is controlled continuously to place the image of the moving object in the center of the frame captured by the telephotographic camera. The telephotographic camera captures the moving object while tracking it.
-
Citations
18 Claims
-
1. A surveillance camera apparatus comprising:
-
a wide-angle camera that converts an optical image obtained through a wide-angle lens into a first image signal, the wide-angle camera that outputs the first image signal, an optical axis of the wide-angle camera being fixed in a constant direction; a telephotographic camera that converts an optical image obtained through a telephotographic lens into a second image signal, the telephotographic camera that outputs the second image signal, the telephotographic camera supported to be rotatable around at least one pivot axis so that an optical axis of the telephotographic camera can be tilted and panned; a directivity information calculating unit that identifies an image of a moving object within a image-capturing range of the wide-angle camera based on the first image signal from the wide-angle camera, the directivity information calculating unit that calculates directivity information corresponding to a position of the image of the moving object within the image-capturing range; a camera posture control unit that rotates the telephotographic camera around the pivot axis in accordance with the directivity information so as to direct the optical axis of the telephotographic camera at the moving object captured by the wide-angle camera; and a tracking information calculating unit that calculates tracking information, which is used to direct the optical axis of the telephotographic camera so as to place the image of the moving object at a center region of a image-capturing range of the telephotographic camera, based on second image signals sequentially output from the telephotographic camera, wherein; after the tracking information is calculated, the camera posture control unit is controlled in real time using the tracking information in place of the directivity information and the telephotographic camera continuously captures the moving object, and wherein the tracking information includes a movement vector of the moving object, and the movement vector is calculated based on the second image signal and an automatically adjustable magnification of the telephotographic camera based on a size of the captured moving object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A surveillance camera apparatus comprising:
-
a wide-angle camera that converts an optical image obtained through a wide-angle lens into a first image signal, the wide-angle camera that outputs the first image signal, an optical axis of the wide-angle camera being fixed in a constant direction; a telephotographic camera that converts an optical image obtained through a telephotographic lens into a second image signal, the telephotographic camera that outputs the second image signal, the telephotographic camera supported to be rotatable around at least one pivot axis so that an optical axis of the telephotographic camera can be tilted and panned; a directivity information calculating unit that identifies an image of a moving object within a image-capturing range of the wide-angle camera based on the first image signal from the wide-angle camera, the directivity information calculating unit that calculates directivity information corresponding to a position of the image of the moving object within the image-capturing range; a camera posture control unit that rotates the telephotographic camera around the pivot axis in accordance with the directivity information so as to direct the optical axis of the telephotographic camera at the moving object captured by the wide-angle camera; and a tracking information calculating unit that calculates tracking information, which is used to direct the optical axis of the telephotographic camera so as to place the image of the moving object at a center region of a image-capturing range of the telephotographic camera, based on second image signals sequentially output from the telephotographic camera, wherein; after the tracking information is calculated, the camera posture control unit is controlled in real time using the tracking information in place of the directivity information and the telephotographic camera continuously captures the moving object, wherein the tracking information includes a movement angle of the moving object, and the movement angle is calculated based on the second image signal and a view angle of the telephotographic camera, and wherein the tracking information includes a movement vector of the moving object, and the movement vector is calculated based on the second image signal and an automatically adjustable magnification of the telephotographic camera based on a size of the captured moving object.
-
-
18. A surveillance camera apparatus comprising:
-
a wide-angle camera that converts an optical image obtained through a wide-angle lens into a first image signal, the wide-angle camera that outputs the first image signal, an optical axis of the wide-angle camera being fixed in a constant direction; a telephotographic camera that converts an optical image obtained through a telephotographic lens into a second image signal, the telephotographic camera that outputs the second image signal, the telephotographic camera supported to be rotatable around at least one pivot axis so that an optical axis of the telephotographic camera can be tilted and panned; a directivity information calculating unit that identifies an image of a moving object within a image-capturing range of the wide-angle camera based on the first image signal from the wide-angle camera, the directivity information calculating unit that calculates directivity information corresponding to a position of the image of the moving object within the image-capturing range; a camera posture control unit that rotates the telephotographic camera around the pivot axis in accordance with the directivity information so as to direct the optical axis of the telephotographic camera at the moving object captured by the wide-angle camera; and a tracking information calculating unit that calculates tracking information, which is used to direct the optical axis of the telephotographic camera so as to place the image of the moving object at a center region of a image-capturing range of the telephotographic camera, based on second image signals sequentially output from the telephotographic camera, wherein; after the tracking information is calculated, the camera posture control unit is controlled in real time using the tracking information in place of the directivity information and the telephotographic camera continuously captures the moving object, wherein the tracking information calculating unit obtains the tracking information by comparing sequential second image signals from the telephotographic camera to calculate movement information of the image of the moving object, and wherein the tracking information includes a movement vector of the moving object, and the movement vector is calculated based on the second image signal and an automatically adjustable magnification of the telephotographic camera based on a size of the captured moving object.
-
Specification