JPH04317289A - Television camera device - Google Patents

Abstract

PURPOSE:To discriminate what an object is by calculating the distance between in and the object from the difference of respective detected positions detected by two movement detection circuits. CONSTITUTION:A first movement detection circuit 6 and a second movement detection circuit 12 compare a signal from a first A/D converter 4 and a second A/D converter 10 with the signal read out of a first image memory 5 and a second image memory 11, and detect the movement, if any, of the object, and detect the size of the object with respect to a field angle and moving speed. A distance calculation circuit 13 calculates the distance between it and the object from the detected movement component, a CPU14 obtains the specific moving speed and size of the object by means of the obtained distance, size with respect to the field angle and moving speed. Further by utilizing the obtained result, the data for discriminating what the object is read out of an object data ROM15 and the object is determined.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television camera device capable of detecting the movement of a subject.

0002

2. Description of the Related Art FIG. 3 is a block diagram showing an example of a conventional television camera device. In the figure, 1 is a lens of the television camera, and 2 is a charge that converts an image coming from the lens 1 into an electrical signal. Coupling device (hereinafter abbreviated as CCD)
, 3 is a video signal processing circuit, 4 is an A/D converter that A/D converts the video signal from the video signal processing circuit 3, and 5 is an A/D converter.
6 is a motion detection circuit that compares the signal from the A/D converter 4 with the signal from the image memory 5 to detect the movement of the subject; A D/A converter, 17 a superimpose circuit, and 18 a video output terminal.

Next, the operation will be explained. The image coming in through the lens 1 is converted into an electrical signal by the CCD 2, and converted into a video signal by the video signal processing circuit 3. This video signal will be A/D converted by the A/D converter 4, and the digitized video signal will be stored in the image memory 5. The motion detection circuit 6 then uses the A/D
The signal coming directly from the converter 4 and the signal read out from the image memory 5 are compared, and if there is movement in the subject, movement is detected. Next, the digital video signal is converted into an analog signal by the D/A converter 16, the motion detected by the motion detection circuit 6 is superimposed in the superimpose circuit 17, and the signal is output from the video output terminal 18.

0004

[Problem to be Solved by the Invention] Since the conventional television camera device is configured as described above, it is possible to detect the movement of the subject and the size and moving speed of the subject relative to the angle of view. Since the distance cannot be measured, there is a problem in that the individual size and moving speed of the subject cannot be detected.

[0005] This invention was made in order to solve the above-mentioned problems, and provides a television that can detect the unique size and moving speed of a subject, and furthermore, can determine what the subject is. The purpose is to obtain camera equipment.

[0006]

[Means for Solving the Problems] A television camera device according to claim 1 includes two television cameras facing the same subject arranged in parallel at a predetermined distance apart, and a video signal obtained from each of the television cameras. Two motion detection circuits that detect the motion component, the size of the subject on the screen, and the speed of movement; and a distance calculation circuit that calculates the distance to the subject from the difference between the detection positions detected by these two motion detection circuits. , an arithmetic processing circuit that uses data from the two motion detection circuits and distance calculation circuits mentioned above to calculate the moving speed and size of the subject, and a calculation processing circuit that uses the results obtained from this arithmetic processing circuit to determine what the subject is. It is equipped with a subject data read-only memory that stores data for determining whether there is a subject.

In the television camera device according to claim 2, the distance calculation circuit is a difference circuit that calculates the absolute value of the difference between the horizontal addresses by using the position on the screen of the motion component of the subject detected by the two motion detection circuits. and a distance data read-only memory for determining the distance to the subject by reading distance data that stores the relationship between the magnitude of the absolute value of the difference circuit and the distance.

[0008]

[Operation] The television camera device according to claim 1 uses two television cameras, each of which uses a motion detection circuit to detect a motion component and calculate a distance, and a lead that stores data for determining the subject. The object is now identified using only memory.

In the television camera apparatus according to the second aspect of the present invention, a difference in horizontal addresses is determined by a difference circuit in order to calculate the distance. Using the magnitude of this value, the distance is read out from the read-only memory that records the relationship between size and distance, and the distance between the objects is determined.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of this invention.
In FIG. 1, the same or equivalent components as in FIG. 3 are given the same reference numerals, and redundant explanation will be omitted. In the figure, 7 is a second lens that is the same as the first lens 1 provided in two television cameras that are arranged in parallel at a predetermined distance apart and facing the same direction, 8 is a second CCD that has the same configuration as the first CCD 2, 9
10 is the same second video signal processing circuit as the first video signal processing circuit 3, and 10 is the same as the first A/D converter 4, for example, 3.
A second A/D converter that samples the video signal at 58 MHz/8 bits; 11 is a second image memory that is the same as the first image memory 5; 12 is a second motion detection circuit that is the same as the first motion detection circuit 6; A distance calculation circuit whose details are shown in FIG. 2; 14 is an arithmetic processing circuit (hereinafter abbreviated as CPU) that calculates the moving speed and size of the subject; 15 is a circuit that stores data for determining what the subject is; This is a subject data read-only memory (hereinafter abbreviated as subject data ROM).

In FIG. 2 showing the configuration of the distance calculation circuit 13, 19 is a first horizontal address input terminal;
is the second horizontal address input terminal, 21 is the sensing circuit,
22 is a differential circuit that takes the difference between two addresses, and 23 is a distance data read only memory (hereinafter referred to as distance data ROM).
24 is a distance data output terminal.

Next, the operation will be explained. Images coming in from the first lens 1 and second lens 7 of two television cameras facing the same direction and arranged in parallel at a predetermined distance apart are converted into electrical signals by the first CCD 2 and the second CCD 8, respectively. The electrical signals converted by the first CCD 2 and the second CCD 8 are then transferred to the first CCD 2 and the second CCD 8.
A video signal is obtained in the video signal processing circuit 3 and the second video signal processing circuit 9. The obtained video signal is sent to each of the first A/D converter 4 and the second A/D converter 10.
becomes a digital signal. These digital signals are stored in the first image memory 5 and the second image memory 11, respectively. In the first motion detection circuit 6 and the second motion detection circuit 12, the first A/D converter 4 and the second A/D converter 4 and the second motion detection circuit 12
The signal coming directly from the /D converter 10 is compared with the signals read from the first image memory 5 and the second image memory 11, and if there is movement in the subject, the movement is detected, and the angle of view of the subject is determined. Detect the size and moving speed of the object. The distance calculation circuit 13 calculates the distance to the object for each detected motion component, and the CPU 14 obtains the movement speed and size specific to the object using the obtained distance, size and movement speed for the angle of view. . Furthermore, the obtained results are used to create a subject data ROM.
15, the data for determining what the subject is is read out, and the subject is specified. 1st A/D converter 4
The digital signal is converted into an analog signal by the D/A converter 16, and superimposed with the subject data read out from the subject data ROM 15 by the superimpose circuit 17. The signal is output to the video output terminal 18.

Further, the distance calculation circuit 13 first inputs the horizontal address of each screen position detected by the first motion detection circuit 6 and the second motion detection circuit 12 to a first horizontal address input terminal 19 and a second horizontal address input terminal. terminal 20
Enter. Then, the input address is sensed by the sensing circuit 21, and if there are successive detection points, for example, the address of only the first detection point is sensed and output. The output address is used to calculate the difference between each address in the difference circuit 22, output the absolute value, and use the absolute value to directly calculate the distance from the distance data ROM 23 which stores the relationship between the magnitude of the absolute value and the distance. The distance to the subject is read out and output to the distance data output terminal 24.

[0014] In the above embodiment, a case has been described in which the result of determining the object is displayed in a superimposed manner, but the moving speed and size may also be displayed at the same time. In addition, the results may be displayed externally as external outputs instead of superimposed display, and the results are similar to those of the above embodiments.

[0015]

As described above, according to the invention of claim 1, motion components are detected on the screen of the subject from the video signals obtained from each of the two lenses facing the same subject, which are arranged parallel to each other at a predetermined distance apart. The size and movement speed of the subject are detected by two motion detection circuits, and the distance to the subject is calculated by a distance calculation circuit from the difference between the detection positions detected by these two motion detection circuits. Using the data from the circuit and distance calculation circuit, the arithmetic processing circuit calculates the moving speed and size of the subject, and uses the results obtained to determine what the subject is using the subject data read-only memory. With this configuration, the unique size and moving speed of the subject can be detected, and the identity of the subject can also be determined.

According to the second aspect of the invention, the distance calculation circuit has two
The absolute value of the difference in the horizontal address is determined using the position on the screen of the motion component of the subject detected by the two motion detection circuits, and the distance data that stores the relationship between the magnitude of the determined absolute value and the distance is read out. Since the camera is configured to calculate the distance to the object by doing this, there is no need for complicated function calculations, and the processing speed is significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a television camera device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration of the distance calculation circuit in FIG. 1;

FIG. 3 is a block diagram showing an example of a conventional television camera device.

[Explanation of symbols]

1, 7 Lenses 6, 12 Motion detection circuit 13 Distance calculation circuit 14 Arithmetic processing circuit 15 Subject data read only memory 22 Difference circuit

Claims (2)

[Claims] [Claim 1] Two lenses facing the same subject placed in parallel with a predetermined distance apart, and the motion component, the size occupied by the subject on the screen, and the moving speed from the video signals obtained from each lens. Two motion detection circuits that detect, a distance calculation circuit that calculates the distance to the subject from the difference between the detection positions detected by these two motion detection circuits, and data from the two motion detection circuits and distance calculation circuit. an arithmetic processing circuit that calculates the specific moving speed and size of the subject using TV camera equipment with. 2. The distance calculation circuit includes a difference circuit that calculates the absolute value of the difference in horizontal addresses by using the position on the screen of the motion component of the subject detected by the two motion detection circuits;
2. The television camera apparatus according to claim 1, further comprising a distance data read-only memory for determining the distance to the subject by reading distance data storing the relationship between the magnitude of the absolute value of the difference circuit and the distance.