KR960005483B1 - Video camera system using thermal image detecting means - Google Patents

Abstract

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Description

Video camera system with thermal imaging means

1 is a thermal image according to an embodiment of the present invention. Iii) A schematic diagram of a video camera with detection means.

2 is an internal block diagram of a video camera system of the present invention.

3 (a) to 3 (d) are functional explanatory diagrams of an embodiment of the present invention.

4 (a) and 4 (b) are structural diagrams of an embodiment of the thermal image detecting means in the present invention.

Fig. 5 (a) and Fig. 5 (b) are explanatory diagrams of a texture for obtaining a thermal image.

* Explanation of symbols for main parts of the drawings

1: video camera 2: main body support

3: thermal image detection means 4: lens direction setting means

5: Person 6a ~ 6e: Pyroelectric thermal detection element

7: pyroelectric heat detection element group 8: rotation axis

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video camera system for performing automatic photographing such as tracking photographing operation of a human body using a thermal image.

In the video camera, the remote operation function was to operate the camera while watching the monitor screen using a motor.

However, in the above-described prior art, it is mainly the third person to manipulate the camera angle while watching the monitor screen, and it is difficult to perform automatic shooting unattended.

It is an object of the present invention to provide a system capable of automatically photographing a video camera by a relatively simple system configuration.

In order to achieve the above object, the present invention provides a thermal image detection means comprising a plurality of pyroelectric thermal detection device groups, human body plate means for detecting a person by a signal from the thermal image detection means, and the thermal image detection means. Human body position detecting means for determining the position of the person detected by the signal from the human body, imaging frame determination means for determining the imaging frame of the video camera based on the signals from the human body determining means and the human body position detecting means, and a video camera And a lens direction setting means having a rotating mechanism provided between the main body and the main body support portion to set the direction of the video camera main body based on a signal from the image capturing frame determining means.

According to the above configuration, the present invention can realize the automatic imaging of the video camera by detecting the human body using the thermal image and tracking the human body.

EMBODIMENT OF THE INVENTION Hereinafter, the Example of this invention is described using FIGS.

1 is an embodiment of an embodiment of the present invention.

In the figure, reference numeral 1 denotes a video camera, reference numeral 2 denotes a main body support, reference numeral 3 denotes a thermal image detection means, reference numeral 4 denotes a lens direction setting means having a biaxial rotation mechanism, and reference numeral 5 denotes a person to be photographed. .

Here, the lens direction setting means 4 may be a rotation mechanism of one left and right axes.

The thermal image detecting means (3) is mounted on the main body support (2). The thermal image detecting means (3) is arranged to face upright in the direction of the subject. 1) is controlled toward the person (5).

In the thermal image detecting means 3, a plurality of pyroelectric thermal detection element groups are incorporated. Non-contact temperature measurement methods include a quantum infrared sensor, an infrared CCD, and a thermal infrared sensor. The quantum infrared sensor and the infrared CCD have high sensitivity and fast response speed but need cooling (-100 ~ -200 ℃, which is not suitable for public use. On the other hand, the thermal infrared sensor is relatively low sensitivity and slow response No cooling is required The thermal image detection means 3 utilizes the pyroelectric effect in the thermal infrared sensor.

2 is an internal block diagram of the video camera system of the present invention.

The video camera 1 has a built-in lens angle setting means for performing a zoom operation.

The main body support portion 2 includes a thermal image detecting means 3, a human body determining means, a human body position detecting means, an imaging frame determining means, a lens direction setting means, and a receiving means.

The wireless remote control includes built-in image capture setting means and wireless transmission means.

When the desired function is selected by the image capturing new setting means, the thermal image detecting means 3 detects a thermal image including a person through the wireless transmitting means and the receiving means, and by the human body determining means and the human body position detecting means. The number, position, size, etc. of the person are judged, and the angle, size, etc. of the image pickup frame centered on the person are determined by the image pickup frame determining means, and the lens direction setting means and the lens angle setting means are operated to operate the lens of the video camera. Direction, the zoom amount is determined, and imaging is started.

3 is a functional explanatory diagram of an embodiment of the present invention.

In FIG. 3, FIG. 3 (a) is to control the lens direction to fix the detected person to an arbitrary position of the image pickup frame. In FIG. 3B, the direction of the lens and the angle of view are controlled to fix the detected person at an arbitrary size to an arbitrary position of the image pickup frame. In FIG. 3C, the lens direction and angle of view are controlled so that a power source enters the image pickup frame for the plurality of detected persons.

In FIG. 3D, the lens direction and angle of view are controlled so as to zoom up and down the detected person around an arbitrary position of the image pickup frame.

4 is a configuration diagram of an embodiment of the thermal image detecting means 3 in the present invention.

(6a) to (6e) are pyroelectric heat detection elements (hereinafter referred to as elements), 7 is a group of pyroelectric heat detection elements, and 8 is a rotating shaft. FIG. 4 (a) shows that the rotation axis 8 is parallel to the pyroelectric thermal detection element group 7, and FIG. 4 (b) shows the rotation axis 8 at a constant angle θ with the pyroelectric thermal detection element group 7 Displays the case inclined by. The angle θ is selected by setting the structure of the main body support 2 to be incorporated and the detection viewing angle.

Next, the texture of obtaining a thermal image using the pyroelectric heat detection element group 7 will be described with reference to FIG. FIG. 5 (a) shows a stereoscopic viewing angle of a thermal image to be detected, and FIG. 5 (b) shows a detected thermal image. The pyroelectric heat detection element group 7 has five elements, and is in charge of dividing the viewing angle by five in the vertical direction.

The pyroelectric heat detection element group 7 is used in combination with an optical lens. The viewing angle is set narrow in the horizontal direction, and the horizontal viewing angle is sequentially moved simultaneously with the rotation of the rotary shaft 8. Whenever the sequential movement is performed, the pyroelectric heat detection element group 7 measures the temperature, thereby obtaining a two-dimensional thermal image shown in FIG. 5 (b).

In addition, a conventionally-typed infrared sensor is a so-called buckle type using a sintered body of a super-thick film, but this buckle type has a problem that the thermal time constant cannot be reduced and the response is slow. Therefore, in the present invention, the response time can be made to be about 1/10 of the buckle type by using a pyroelectric heat detection device using a superelectric thin film made of PbTiO _{3 or the} like. By using the pyroelectric thermal detection element using the superelectric thin film, the response time can be shortened, and the human body behavior can be detected with high accuracy. In addition, by using a super thin film, it is possible to further reduce the size of the device.

As described above, according to the present invention, by adding a thermal image detecting means composed of a plurality of pyroelectric thermal detection device groups to the video camera, it is possible to detect a person and to perform automatic tracking shooting centering on the person. This makes it possible to eliminate troublesome work in shooting and increases the degree of freedom in shooting. In addition, since various functions can be added to the remote controller, camera operation becomes simpler, and anyone can easily perform a video operation whose main character.

According to the present invention, the thermal image can be detected with a relatively simple system configuration by rotating the group of pyroelectric heat detection elements arranged in one dimension.

In addition, the use of a group of pyroelectric thermal detection elements of a superelectric thin film can improve the response speed of the thermal image and reduce the size of the system.

Claims (1)

Thermal image detection means comprising a plurality of pyroelectric thermal detection element groups, human body determination means for detecting a person by a signal from the thermal image detection means, and a position of the person detected by a signal from the thermal image detection means A human body position detecting means for determining an image sensor, an image pickup frame determining means for determining an image pickup frame of a video camera based on signals from the human body determination means and the human body position detecting means, and between the video camera body and the main body support portion. And a lens direction setting means having a rotating mechanism for setting the direction of the video camera main body based on a signal from the image capturing frame determining means.