Surveillance camera apparatus and surveillance camera system

Abstract

Provided is a surveillance camera apparatus with a wide-angle camera and a telephotographic camera supported by a foundation. 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.

Description

technical field [0001] The present invention relates to a monitoring camera device and a monitoring camera system capable of clearly capturing images of moving objects that are monitored in a wide-area monitoring area by comprehensively utilizing multiple types of cameras. Background technique [0002] Generally, surveillance camera devices used for guarding coastal areas and border areas are required to have a large surveillance area, and the shooting distance of the surveillance target can reach several kilometers to tens of kilometers. In addition, in road surveillance applications such as general roads and expressways, it is desirable to cover an imaging distance of at least tens to hundreds of meters. Such a surveillance camera device is required to have a function of quickly recognizing a moving body regarded as a surveillance target and tracking and monitoring it. In the past, the surveillance camera devices used for this purpose cannot be said to have sufficient rel...

AI Technical Summary

Problems solved by technology

Therefore, with the device described in Japanese Patent Document 1, it is very difficult to visually recognize the image of the moving body, and switching to the zoom camera also requires manual operation, so there is a disadvantage that unmanned operation cannot be performed.

In addition, although the device described in Japanese Patent Document 2 has the function of automatically tracking moving objects, after the moving objects are recognized from the images of the wide-angle camera, tracking information is also obtained from the images captured by the wide-angle camera, so monitoring areas such as coastal areas or border areas In such a large range, even if the tracking information is obtained from the captured image of the wide-angle camera whose image of the moving body becomes a very small point image, there are certain problems in its reliability, and it is difficult to accurately control the imaging light of the zoom lens with a narrow field of view. axis

And once the tracking is interrupted, it is extremely difficult to start tracking again, so that the full monitoring effect cannot be obtained

Images