KR0124581B1 - Control apparatus and method of object auto-tracing video camera - Google Patents

Abstract

The present invention relates to a control system for subject automatic tracking video camera and a method thereof which can take a picture of a subject in a constant size without regard to the distance. This invention includes a transmitting part producing a signal informing the position of the subject; a plurality of sensors receiving the transmitting part's signal at each position; receiving parts connected to sensors one by one, and converting and producing the transmitting part's signal to a given level; comparators comparing the receiving parts' signal wave forms and producing a compensation signal for controlling a camera angle; driving parts receiving the comparators' output signals, respectively and converting it into a motor driving signal; camera angle control motors; a selection input part keeping the camera angle selected by a user or into which automatic correction function is input; and a micom receiving the user-desired camera angle from the selection input part, transmitting a reference signal to the camera angle to the comparators, receiving values obtained by comparison, and determining the driving direction of the camera angle control motors.

Description

Control of video camera automatic subject and its method

1 and 2 are block diagrams showing embodiments of the present invention.

Figure 3 (a) is a side view showing an embodiment of the angle adjustment operation of the present invention.

Figure 3 (b) is a plan view showing an embodiment of the angle adjustment operation according to the present invention.

4 is an operation flowchart for performing automatic tracking of a subject auto tracking video camera according to the present invention.

* Explanation of symbols for main parts of the drawings

1: Transmission unit 2: Selection input unit

3: micom S ₁ to S _m : angle detection sensor

S _z : Distance detection sensor R ₁ to R _m : Angle signal receiver

R _z : Distance signal receiver B ₁ to B _{m / 2} : Comparator

D ₁ to D _{m / 2} : Angle adjustment drive D _z : Zoom motor drive

M ₁ to M _{m / 2} : Angle adjusting motor, M _z : Zoom motor

A: Alarm

The present invention relates to a control apparatus of an unmanned photographing camera, and more particularly, to a control apparatus of an automatic subject tracking video camera for automatically tracking and photographing a moving subject.

Conventionally, a transmitter attached to a camera emits a certain radio wave to a subject, calculates a distance from the subject using reflected waves reflected by the subject, and tracks the subject or remembers the subject so that the subject can be remembered. There were many errors and very difficult to implement.

The present invention has been made in order to solve the above problems, it is possible to automatically track the subject to take a very accurate picture, and to provide a video camera control device for automatically tracking the subject that can always shoot a certain size regardless of the distance of the subject There is a purpose.

A control apparatus of an automatic video tracking subject according to the present invention includes a transmitter for generating a position signal of a subject, a selection input unit for inputting a signal for maintaining or correcting the camera at a set angle angle and distance, and a camera set from the selection input unit. A microcomputer that receives a control angle for controlling each unit by receiving angle angles and distances thereof, and a plurality of microcomputers having a predetermined distance therebetween and an angle detecting sensor detecting a moving angle of a subject according to a position signal of the transmitter; And an angle signal receiver which is connected to the angle sensor in a one-to-one correspondence and converts the detected movement angle signal to an appropriate level, and compares the output angle of the angle signal receiver with the set angle angle of the microcomputer and corresponding camera angle angle. A comparator for outputting a correction signal, and an angle angle correction signal for the comparator A plurality of camera angle adjustment drivers for receiving a one-to-one correspondence and outputting a driving signal for adjusting the angle of the camera by the control signal of the microcomputer, and a plurality of cameras driven by the driving signal to adjust the angle of the camera It is characterized by being composed of an angle adjusting motor.

A control method of an automatic video tracking subject according to the present invention includes a first step of determining whether a signal is received at each receiver, a second step of counting the number of received signals if a signal is received at the receiver, and a signal at the receiver. Is not received, a third step of generating an unreceivable alarm; a fourth step of comparing a difference between the number of two pairs of counted signals and a constant value; And a fifth step of determining whether to perform the step, and a sixth step of generating a camera angle adjustment motor driving signal when the angle corresponds to a preset angle.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

1 and 2 are detailed configuration diagrams showing an embodiment of the present invention, wherein the transmitter 1 generates a signal for indicating a position of a subject, and an angle angle and corrections of a camera for photographing a subject. Selectively selects and presets the selection input unit 2, the microcomputer 3 which receives a preset angle angle and modifications through the selection input unit 2 and outputs a control signal for controlling each unit; It is composed of a plurality of having a certain period and the angle detection sensor (S ₁ to S _m ), the angle detection sensor (S ₁ to S _m ) for detecting the position of the subject at each position the position signal of the transmitter 1 the output of the angle signal receiver (R ₁ to R _m), the angle signal receiver (R ₁ to R _m) which amplifies or converts, or tuned to the appropriate level the movement angle signal detected is connected to a one-to-one basis and A plurality of the comparison section that compares the angle angle predetermined output from yikom (3) generates a correction signal for changing the corresponding camera-angle thereto (B ₁ to B _{m / 2),} the comparison unit (B ₁ to B _{m / 2} ) a plurality of camera angle adjustment driver (D ₁ to D) for receiving a photographing angle correction signal in a one-to-one correspondence and outputting a driving signal for adjusting the angle angle of the camera by the control signal of the microcomputer (3) _{m / 2} ) and a plurality of camera angle adjusting motors M ₁ to M _{m / 2} driven by a driving signal for adjusting the angle of the camera.

And, converting the transmission distance for detecting a distance from the camera to the subject by the transmission signal (1) sensor (S _z), a distance signal detected by the distance sensor (S _z) to the amplifier, an appropriate level The range of the camera signal to be adjusted or maintained by a control signal of the microcomputer 3 corresponding to the distance signal of the distance signal receiver R _z and the distance signal receiver R _z . In order to control a zoom motor driver D _k for outputting a zoom adjustment signal, a zoom motor M _{k for} automatically zooming according to the zoom adjustment signal, and a control of the microcomputer 3 If more than the distance is configured to further include an alarm (A) for notifying the user of the inability to receive or out of the zoom range.

Here, the transmitter 1 modulates an oscillator 1a for generating a waveform having a predetermined frequency, a controller 1b for controlling the operation of the oscillator 1a, and an output signal of the oscillator 1a to modulate an airwave signal. It consists of a modulator 1c for outputting.

The operation of the present invention configured as described above will be described with reference to FIGS. 3A and 3B.

First, when the subject adjusts the controller 1b of the transmitter 1 carrying the preset transmitter 1, the oscillator 1a generates a waveform having a predetermined frequency under the control of the controller 1b. The modulator 1c transmits the signal to the modulator 1c, and modulates the modifier 1c.

A plurality of angle detection sensors S ₁ to S _m attached to the antenna 4 (see FIG. 3) for maintaining a predetermined distance from the airwave signal output from the transmitter 1 are received at each predetermined position. A plurality of angle signal receivers R ₁ to R _m amplify them, convert them to an appropriate level, or output them in synchronization with the frequency of the input signal.

At this time, as an example, S ₁ and S ₂ of the plurality of angle detection sensors are sensors for detecting the up and down moving angles of the subject, and S ₃ and S ₄ are sensors for detecting the left and right moving angles of the subject. As shown in FIG. 3A, the angle between the upper sensor S ₁ and the lower sensor S ₂ at the position of the current subject receives signals corresponding to θ ₁ , θ ₂ , When the angles of the up, down, left, and right of the camera coincide, the angles of the camera are fixed by controlling the comparison units B ₁ and B ₂ and the angle adjusting driving units D ₁ and D ₂ .

When the subject moves upward while the angle angle of the camera is fixed, and the angle between the upper sensor S ₁ and the lower sensor S ₂ changes to θ ₁ at the position of the camera (FIG. 3 (a)), the comparison part (B ₁₎ is the comparison unit (B ₁₎ and then outputs a signal to the microcomputer (3) receives this detecting a differential value (θ ₁ -θ ₁₎ of θ ₁ and θ ₁ corresponding to θ ₁ controlled by the comparison unit (B ₁₎ is θ ₁ -θ to output a signal corresponding to the _first angle adjustment drive (D ₁₎ by controlling the other hand, the angle adjustment drive (D ₁₎ to be applied to the angle of the camera by giving it determines the direction of rotation of the angle adjusting motor (M ₁₎ for adjusting the angle and the camera angle is so moved by θ ₁ -θ ₁ toward the image side.

In addition, when the subject moves to the left side and the angle between the left sensor S ₃ and the right sensor S ₄ changes from θ ₂ to θ ₂ (FIG. 3B), the comparison unit B ₂ is θ _2. outputting a signal corresponding to, and the microcomputer 3 is received by the θ ₂ -θ after detecting the _second value of the comparison unit (B ₂₎ of the θ ₂ controls the comparison unit (B ₂₎ -θ ₂ it controlling to output a corresponding signal by giving the other hand determines the rotational direction of the camera angle of the camera angle adjustment motor (M ₂₎ controls the angle adjustment drive (D ₂₎ to the left by a θ ₂ -θ ₂ To control the movement.

In addition, if the user wants to maintain the angle between the upper sensor S ₁ and the lower sensor S ₂ at the position of the current object as θ ₁ but not at θ ₁ ± α, the user may use the selection input unit 2. If you type the angle adjustment data of θ ₁ ± α to the microcomputer 3, the microcomputer 3 is a signal corresponding to α in the comparison unit (B ₁₎ to control the comparison unit (B _1), the angle adjustment drive ( D ₁ ) and the angle adjustment driving unit D ₁ to control the angle of the camera to be moved upwards or downwards by α.

Likewise, if the angle between the left sensor S ₃ and the right sensor S ₄ is to be maintained at θ ₂ ± β at the position of the current subject, the selection input unit 2 may be used to provide θ ₂ ± β to the microcomputer 3. If you type the angle adjustment data, the microcomputer 3 is a signal corresponding to β in the comparison unit (B ₂₎ to control the comparison unit (B ₂₎ to be applied to the angle adjusting drive (D ₂₎ to adjust the angle By controlling the driving unit D ₂ , the angle of the camera is adjusted to be shifted by β to the left or the right.

In the above, when the upper and lower angles and the left and right angles are not θ ₁ and θ ₂ but θ ₁ ± α and θ ₂ ± β, the user may select a specific part of the subject, for example, a golf ball during a golf game It is very convenient to use when you want to angle to.

The automatic tracking method of the camera automatic tracking video camera according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

4 is an operation flowchart for performing automatic tracking of a subject auto tracking video camera according to the present invention.

First, the signal on the angle signal receiving unit _{(R 1, R 2, R} 3, ... R m) signal is to determine if the received (1S), an angle signal receiver _{(R 1, R 2, R} 3, ... R m) is received if, and counts the number of received signals (2S) signal if it is not receiving the angle signal receiving unit determines that it can not receive signals from _{(R 1, R 2, R} 3, ... R m) alarms (a (3S).

Then, the number counted in step 2S compares the difference AB of the number of two paired signals counted as two pairs (A, B) to one set and compares the constant value (α) with a comparator (4S). If AB is less than the constant value (a), the process returns to step 1S. If the difference AB is greater than or equal to the constant value (a), it is determined whether the value corresponds to a preset angle (5S). If it does not correspond to the angle, the process returns to step 1S, and if it corresponds to the preset angle, and outputs the camera angle adjustment motor driving signal (6S), the signal is received by the angle adjustment driver to drive the camera angle adjustment motor.

By repeatedly performing such a process, the moving angle of the camera may be automatically adjusted by photographing the moving angle of the camera according to the movement of the subject.

In addition, the microcomputer 3 may calculate the distance between the subject and the camera by counting the outputs of the distance detecting sensor S _z and the distance signal receiving unit R _z , and then may perform automatic zooming according to the distance between the subject. The zoom motor driver D _z is controlled so that the zoom adjustment motor M _z is automatically operated by driving the zoom motor driver D _z .

In this case, when the distance to the detected subject exceeds the zoom corresponding range or the subject moves to a region where the subject cannot be photographed according to the signal counted by the microcomputer 3, the alarm A is notified to the user.

As described above, the present invention can not only automatically track and photograph a subject within a certain radius according to the movement of the subject without a photographer, but also automatically record according to the distance of the subject, so that recording is always possible at a certain size. There is an effect that can be taken accurately for, and can be configured very cheaply has a very practical effect.

Claims (4)

A transmitter 1 for generating a position signal of a subject, a selection input unit 2 for inputting a signal for maintaining or correcting the camera at a set angle angle and distance, an angle angle and a distance of the camera set from the selection input unit 2, etc. Microcom (3) for receiving the input and output a control signal for controlling each part, consisting of a plurality of having a certain distance between each other, the angle detection sensor for detecting the moving angle of the subject according to the position signal of the transmitter (S) (S) ₁ to S _m ), the angle signal receiving unit R ₁ to R _m connected to the angle detecting sensors S ₁ to S _m in a one-to-one correspondence and converting the detected moving angle signal to an appropriate level and outputting the angle signal. Comparator B ₁ to B _{m / 2} that compares the output of the receivers R ₁ to R _m with the set angle angles of the microcomputer 3, and outputs a camera angle angle correction signal corresponding thereto, and the comparator B ₁ to B _{m / 2} ) A plurality of camera angle adjustment drivers D ₁ to D _{m / 2} for receiving a writing angle correction signal in a one-to-one correspondence and outputting a driving signal for adjusting the angle of the camera according to the control signal of the microcomputer 3; And a plurality of camera angle adjusting motors M ₁ to M _{m / 2} driven by a drive signal to adjust the angle of the camera. According to claim 1, In order to detect the distance between the camera and the subject distance detection sensor (S _z ) for receiving the transmission signal of the transmitter 1, the distance signal detected by the distance detection sensor (S _z ) the shooting range of the camera by the control signal is converted to an appropriate level for output to the microcomputer 3, the distance signal receiver (R _z), the microcomputer (3) corresponding to a distance signal from the distance signal receiver (R _z) A zoom motor driver D _z for outputting an automatic zoom adjustment signal, a zoom motor M _z driven in accordance with a zoom adjustment signal of the zoom motor driver D _z , in order to correct or maintain a value within a preset range; And an alarm (A) for notifying the user of an inability to receive a reception or an out of zoom range when the subject is controlled by the microcomputer (3) by a predetermined distance or more. The oscillator 1a according to claim 1, wherein the transmitter 1 modulates an oscillator 1a for generating a waveform having a predetermined frequency, a controller 1b for controlling the operation of the oscillator 1a, and an output signal of the oscillator 1a. And a modulator (1c) for outputting an airwave signal. A first step of determining whether a signal is received at each receiver; a second step of counting the number of received signals if a signal is received at the receiver; and an alarm for generating an unreceivable alarm if no signal is received at the receiver. A third step, a fourth step of comparing the difference between the number of two pairs of counted signals and a constant value, and a fifth step of determining whether the difference corresponds to a preset angle when the difference is equal to or greater than the predetermined value, and And a sixth step of generating a camera angle adjustment motor driving signal when the angle corresponds to the angle.