KR100892167B1 - Appararus for image processing in car - Google Patents

Abstract

An image processing device of vehicles is provided to obtain a peripheral image of the vehicles for an operator by sensing the slope of a camera lens. An image processing device of vehicles comprises: a camera part(110) consisting of a plurality of cameras taking a picture of an image; a location perception part(120) adjusting the slope of camera and controlling the lens location of each camera; a monitor part(130) providing the driving force for controlling the lens location of each camera with the location perception part; and a central processing part(270) controlling the location perception part in order to manage the lens location of the relative camera.

Description

Vehicle image processing device {APPARARUS FOR IMAGE PROCESSING IN CAR}

The present invention relates to an image processing apparatus of a vehicle. More particularly, when the camera installed in the vehicle vibrates according to the driving state of the vehicle, or the lens direction of the camera deviates from the set angle direction for other reasons, the tilt of the camera lens is By detecting and correcting the lens direction of the camera in the set angle direction, the driver can always obtain the surrounding image of the vehicle required, and the lens direction of the rear camera which captures the rear image according to the straight driving and the backward driving of the vehicle, respectively. The present invention relates to an image processing apparatus of a vehicle, which faces a different angle direction, so that a driver can automatically obtain a necessary rear image according to a driving method.

Today, various electronic / electrical technologies are being applied to vehicles to assist the driver of the vehicle in terms of convenience and safe driving. For example, a navigation system, a display system for displaying the current state of the vehicle, or a vehicle for the driver of the vehicle. An image system for providing an image of the surrounding is applied to a vehicle.

Looking at the current development trend of the vehicle assistance device applied to the vehicle for a while, in the domestic display a vehicle surrounding image captured by a plurality of camera modules (for example, front, left / right side, rear) mounted on the vehicle Since it is not linked with LCD (liquid crystal display) and cathode-ray tube (CRT), there is a problem that an additional display means produced by the same company as a 4 channel camera module needs to be purchased, and a digital versatile [ video] disk) A display device currently applied to a vehicle because it is not linked to a system, a navigation system, etc., but also is not linked to a CAN (Car Area Network) communication product and cannot display a vehicle's status in real time. Is a simple device that is implemented separately from the system mounted on the existing vehicle.

On the other hand, overseas development trends include Toyota and Honda of Japan, Bayerische Motoren Werke AG (BMW) and Benz of Germany, which selectively use 4-channel display devices, but do not work with CAN products. In Japan, Germany and Germany, the interest in tuning is so high that it maps the ECU (Energy Processing Unit) and displays only the gauge status rather than displaying the vehicle status according to various gauges on the display means. It does not work with.

In addition, the imaging system currently applied to the vehicle has a disadvantage in that the lens direction of the camera module installed in the vehicle is fixed constantly, so that the driver cannot check the surrounding image of the vehicle necessary for driving.

For example, the driver of the vehicle needs to check the rear view of the vehicle by checking the far-field image behind the vehicle during normal driving (forward driving), but when reversing, the driver needs to check the rear near-field image of the vehicle, that is, the image of the rear downward direction. However, the current imaging system is a situation that the driver can not only check a certain direction of the rear.

In addition, the current image system of the vehicle is a situation in which the driver can not acquire the image of the desired angular direction when the driving state of the vehicle, that is, the vehicle vibrates due to road conditions or forms an inclination angle due to road conditions.

Therefore, the driver can acquire the image of the proper angle direction required according to the driving method, and also the safe driving of the vehicle that can assist the safe driving by acquiring the image of the angle direction desired by the driver regardless of the driving state of the vehicle. The way is needed.

It is proposed to satisfy the above-mentioned necessity of the present invention. If the camera installed in the vehicle vibrates according to the driving state of the vehicle, or if the lens direction of the camera deviates from the set angle direction for other reasons, it detects this, and the lens direction of the camera It is an object of the present invention to provide an image processing apparatus for a vehicle capable of acquiring a surrounding image of a vehicle which is always required by a driver by correcting the direction in a set angle direction.

In addition, the present invention is to direct the lens direction of the rear camera for photographing the rear image in accordance with the driving method of the vehicle, for example, straight driving and backward driving to face different angle directions, so that the driver can automatically obtain the necessary rear image according to the driving method. It is an object of the present invention to provide an image processing apparatus for a vehicle that can be obtained.

An image processing apparatus for a vehicle according to the present invention includes: a camera unit including at least one side surface of the vehicle, the camera unit including a plurality of cameras for capturing an image in a lens direction, and a tilt of each camera of the camera unit; A position sensor for adjusting the lens direction of each camera by correcting the tilt of the camera, a motor unit for providing a driving force for adjusting the lens direction of each camera, and the angle measured by the position sensor. When the lens direction according to the tilt of the camera is out of a predetermined angle direction range, the motor unit is controlled to include a central processing unit which controls the position sensing unit to adjust the lens direction of the camera.

The camera unit includes four CCD (charge couple sevice) cameras for converting a signal of light into an electrical signal and are installed on front, left, right and rear sides of the vehicle.

The position sensing unit may be implemented with at least one kind of inclination sensor, and adjusts the lens direction of the camera by dividing the predetermined angular direction range in a predetermined step.

The central processing unit may include a position correcting unit configured to control a lens direction of a rear camera among the cameras of the camera unit at the most downward angle of the angular direction range when the vehicle is driven backward, and the position correcting unit may include: When the angle of rising or lowering is selected, the lens unit of the camera unit is controlled to be upward or downward.

The image processing apparatus of the vehicle includes an analog signal processor for amplifying or attenuating an analog image signal received from the camera unit, and converting the analog image signal into a digital image signal, and the digital image converted by the analog signal processor. A digital signal processing unit for processing a signal, storing it in a memory unit, or outputting the same to a display unit, and a reset integrated circuit (Reset IC), detects and resets an instantaneous change in voltage, A reset unit for preventing a malfunction and a driver unit for transmitting a control signal to the camera unit.

The image processing apparatus of the vehicle further includes an illuminance measuring unit implemented as a photo transistor and configured to measure external illuminance of the vehicle, and a light emitting unit implemented as an infrared light emitting diode and illuminating the rear of the vehicle.

The central processing unit may further include an illuminance processing unit configured to control the light emitting unit to control the light to be irradiated to the rear side of the vehicle when the illuminance value measured by the illuminance measuring unit when the vehicle is driven backward is less than or equal to a reference value. do.

According to another aspect of the present invention, an image processing apparatus for a vehicle includes: a camera unit including a plurality of cameras installed on at least one side of the vehicle and configured to capture an image in a lens direction, and a tilt of each camera of the camera unit; And a position sensing unit for adjusting the tilt of the camera to adjust the lens direction of each camera, a motor unit for providing a driving force for adjusting the lens direction of each camera, and a photo transistor. Illumination measuring unit for measuring the external illuminance of the vehicle, implemented with an infrared light emitting diode, a light emitting unit for illuminating the rear of the vehicle, and the lens direction according to the tilt of each camera measured by the position sensor When out of the predetermined angular direction range, the motor unit is controlled so that the position detecting unit is configured to correspond to the camera. A central processor configured to control the lens direction of the control unit and control the light emitting unit to irradiate light to the rear side of the vehicle when the illuminance value measured by the illuminance measuring unit during the reverse driving of the vehicle is equal to or less than a reference value. Include.

The central processing unit controls the lens direction of the rear camera among the cameras of the camera unit at the downward angle among the angle direction ranges when the vehicle is driven backward, and when the driver of the vehicle selects the angle rising or lowering, the camera A position corrector for adjusting the lens direction of the camera by dividing the predetermined angular direction range into a predetermined step by the lens direction of each of the negative cameras, and an illuminance value measured by the illuminance measuring unit when the vehicle is driven backward When the reference value is less than the control value, the light emitting unit further comprises an illuminance processing unit for illuminating the rear side of the vehicle.

According to the present invention, if the camera installed in the vehicle vibrates according to the driving state of the vehicle, or if the lens direction of the camera is out of the set angle direction for other reasons, the tilt of the camera lens is detected, and the lens direction of the camera is set in the set angle direction. By correcting, the driver can always obtain the surrounding image of the required vehicle.

In addition, according to the present invention, the rear camera lens direction of the rear image capturing the rear image in accordance with the driving method of the vehicle, for example, the straight driving and the backward driving is directed to different angle direction, the driver automatically required according to the driving method An image can be obtained.

In addition, according to the present invention, by measuring the illuminance of the rear when the vehicle is driving backward, if the reference illuminance value or less, that is, if it is very dark, the driver can obtain a bright image by lighting to prevent the accident in advance.

DETAILED DESCRIPTION Hereinafter, an image processing apparatus of a vehicle according to the present invention will be described in detail with reference to the accompanying drawings, and a detailed description of well-known technical contents will be omitted.

1 is a schematic block diagram illustrating an image processing apparatus of a vehicle according to the present invention.

Referring to FIG. 1, an image processing apparatus of a vehicle according to the present invention includes a camera unit 110, a position detecting unit 120, a motor unit 130, an illuminance measuring unit 140, a light emitting unit 150, and the like. The main board 200 may include an analog signal processor 210, a driver 220, a digital signal processor 230, a reset unit 240, an amplifier 250, and a memory unit ( 260 and a central processing unit 270.

The central processing unit 270 includes a position correcting unit 271 and an illuminance processing unit 272.

In addition, the image processing apparatus of the vehicle according to the present invention may further include a power supply unit (not shown) for supplying driving power for each component, the power supply unit DC / DC converter (CONVERTOR), LDO (low drop out) a regulator or the like, and generates and provides driving power for driving the camera 110, the motor unit 130, the light emitting unit 150, and the main board 200. It can be set to 12 Volts.

The image processing apparatus of the vehicle of FIG. 1 divides each component into a component mounted on the main board 200 and a component mounted on a vehicle other than the main board, but each component is located at a different position of the vehicle. Even if installed, it can be seen that not departing from the technical scope of the present invention.

Camera unit 110 is installed on at least one side of the vehicle, for example, four (front / left / right / rear side of the vehicle), CCD (charge couple sevice) for converting the light signal into an electrical signal It may be configured as a camera, and each camera captures an image in a lens direction and provides it to the main board 200.

The four cameras of the camera unit 110 are located at the front (eg, bonnet), left / right side, and rear side of the vehicle, and preferably capture images on the front / left / right / rear side of the vehicle. Do.

The analog signal processor 210 of the main board 200 may be implemented in an analog front end method, and an electrical signal received from each camera of the camera unit 110, that is, an analog image signal The preprocessing may be easily performed in the next stage (digital signal processor 230), and may amplify or attenuate the analog video signal, and convert the digital video signal through an analog / digital conversion process.

The digital signal processor 230 may be implemented as a digital signal processor (DSP) and processes an image signal received from the camera unit 110. For example, the digital signal processor 230 may code-process an image signal, and store the image signal in the memory unit 260, provide the image signal to the central processing unit 270, or display unit (not shown), for example, a vehicle. It can be output through a liquid crystal display (LCD) and a cathode-ray tube (CRT) monitor.

The amplifier 250 amplifies the image signal processed by the digital signal processor 230 at a predetermined amplification ratio as necessary. For example, when the intensity of the image signal is weaker than the set reference intensity, the digital signal processor 230 amplifies the image signal through the amplifier 250 and stores the image signal in the memory unit 260 or outputs it through the display means. can do.

The reset unit 240 may be implemented as a reset integrated circuit (IC), and detects an instantaneous change in the set voltage of the main board 200 to accurately reset the voltage to prevent malfunction of the image processing apparatus of the vehicle. Handle the functions of the integrated circuit.

The memory unit 260 may be implemented as an EEPROM (Electrically Erasable Programmable Read-Only Memory), and stores an image signal captured by the camera unit 110 so that the central processing unit 270 can read the stored image signal. do.

The driver unit 220 transmits a control signal from the main board 200 to each camera of the camera unit 110, and the image signal captured by the camera unit 110 passes through the analog signal processor 210 and is a digital signal processor. The digital signal is processed at 230 and is transmitted to the memory unit 260, and the control signal for controlling the camera unit 110 is transmitted from the digital signal processor 230 to the camera unit 110 via the driver 220. .

In the detailed description of the present invention, well-known technical details are omitted in a method of processing an image acquired through a camera installed in a vehicle.

The motor unit 130 provides a driving force for moving the lens direction of each camera of the camera unit 110 up and down by the control of the central processing unit 270, so that the central processing unit 270 adjusts the lens direction of the camera. To help.

The position detecting unit 120 may be implemented with various kinds of tilt sensors (inclinometer), and the position of measuring the tilt of each camera of the camera unit 110, for example, at a driving axis (not shown) of each camera. Installed, measure the tilt of each camera.

The position detecting unit 120 may be provided as many as the number of cameras of the camera unit 110, and provides a tilt value to the central processing unit 270 by measuring the tilt of each camera.

The position detecting unit 120 measures the inclination of each camera and corrects the lens direction of the camera by the driving force provided from the motor unit 130. For example, if the lens direction of the camera is out of the horizontal direction, the position detecting unit 120 may move the lens direction of the camera in the horizontal direction by a driving force provided from the motor unit 130 based on the control of the central processing unit 270. Correct it to

The position correcting unit 271 of the central processing unit 270 checks whether the lens direction of the camera deviates from the preset angle direction based on the inclination value provided from the position detecting unit 120, so that the lens direction of the camera is When the deviation from the set angle direction, the motor unit 130 is controlled to adjust the lens direction of the camera in a constant angle direction.

For example, if the position corrector 271 is a predetermined angle direction of 20 degrees upward to 40 degrees downward with respect to the horizontal, the lens direction of the camera is 20 degrees upward based on an inclination value received from the position sensor 120. To check whether the camera is out of the downward 40 degrees angle direction, and when the lens direction of the camera is out of the upward 20 degrees to the downward 40 degrees, the motor unit 130 is controlled to adjust the lens direction of the corresponding camera. Be included in the angular direction.

That is, the position sensor 120 may adjust the lens direction of the camera in stages (for example, 10 degrees) based on the driving force provided from the motor unit 130, and under the control of the position corrector 271. When the direction of the camera lens of the camera unit 110 is out of a predetermined angle range according to the vibration of the vehicle or the tilt of the vehicle, the lens direction of the camera is corrected.

Therefore, the lens direction of each camera of the camera unit 110 always faces the set angle direction, so that the driver can always check the image around the vehicle in the set direction regardless of the driving environment.

That is, the image processing apparatus of the vehicle according to the present invention corrects the lens direction of the camera even when the angular direction of the image acquired by each camera of the camera unit 110 changes depending on the driving situation, thereby always displaying the image of the same angular direction. It can be provided to the driver.

In addition, the position correcting unit 271 may correct the camera lens 110 in a predetermined angle range, for example, from 20 degrees upward to 40 degrees downward with respect to the horizontal, the camera unit 110 according to the driving method. Adjust the lens direction of the specific camera, i.e., the rear camera.

For example, the position correcting unit 271 may control the motor unit 130 when the driver shifts the reverse gear, that is, when driving backward, so that the position detecting unit 120 installed on the driving shaft of the rear camera is rearwarded. Automatically control the camera's lens to face downward 40 degrees.

That is, the position correcting unit 271 controls the lens direction of the rear camera toward the horizontal direction when the vehicle runs straight, while the rearmost direction within the range capable of correcting the lens direction of the rear camera during the reverse driving, for example, 40 degrees downward. Control to face.

Accordingly, the image processing apparatus of the vehicle according to the present invention may provide the driver with an image in an appropriate angle direction according to the driving method of the vehicle.

On the other hand, the position correction unit 271 adjusts the lens direction of each camera of the camera unit 110 in a predetermined angle direction according to the driver's selection, thereby providing an image of the angle direction that the driver wins. For example, the position corrector 271 may use the down / up key or a separate remote control of the key buttons of the driver positioned on the panel of the vehicle to increase or decrease the angle. If the downward selection is made, the lens direction of the camera is raised or lowered based on a predetermined angle.

That is, the position corrector 271 divides the lens direction of the camera into 10 degrees, and divides the lens direction into six levels from 20 degrees upward to 40 degrees downward. When the driver selects an angle rising or falling, the lens direction of the camera is shifted by 10 degrees. Up or down to provide the image in the angular direction desired by the driver.

In addition, the position correction unit 271 makes the lens direction of the rear camera face downward 40 degrees when the driving power is re-applied (started) and when the driving is reversed. Operation ends and the lens direction of the camera is adjusted in the angular direction set by the driver when driving straight.

The illuminance measuring unit 140 of the image processing apparatus of the vehicle according to the present invention is implemented as a photo transistor (photo TR), can be installed on the rear side of the vehicle, the illuminance processing unit 272 of the central processing unit 270 To measure the illuminance outside the vehicle.

The light emitting unit 150 may be implemented as an InfraRed Emitting Diode (IRED), and may be installed at the rear side of the vehicle, and generate light under the control of the illuminance processing unit 272.

The illuminance processor 272 controls the light emitter 150 when the illuminance value measured by the illuminance measurer 140 is less than or equal to the reference value when the vehicle is driven backward, so that light is irradiated to the rear side of the vehicle.

Therefore, the image processing apparatus of the vehicle according to the present invention enables the driver to see the bright rear image reliably by illuminating the rear side when the brightness of the outside of the vehicle is dark during the backward driving of the vehicle.

2 and 3 are circuit diagrams for describing the vehicle image processing apparatus according to the present invention in more detail.

2 and 3 illustrate each component as a separate block for convenience of description, it is obvious that each component is connected by a signal line due to the circuit design.

2 and 3, an analog signal processor (AFE) 210, a driver unit (V-DRIVER) 220, a digital signal processor (DSP), and a reset unit (RESET IC) 240 according to the present invention. The amplifier VIDEO_AMP and the memory unit EEPROM 260 may be implemented as integrated circuit devices, and a power block may be provided on the main board 200 to supply driving power.

In addition, a driver (MOTOR DRIVER) is provided between the central processing unit (MICOM) 270 and the motor unit 130 to transmit a control signal for the central processing unit 270 to control the motor unit 130, and the illuminance measuring unit is provided. Between the 140 and the light emitting unit 150 and the central processing unit 270, the central processing unit 270 measures illuminance through the illuminance measuring unit 140, and an LED_COMVER_BLOCK is provided to supply driving power to the light emitting unit 150. It is provided.

Meanwhile, each component of the main board 200 and a port unit which is not located on the main board 200 and which can be connected by a cable (signal line) between each component installed in the vehicle are provided. Connect signal lines between components to exchange signals between components.

Hereinafter, a method of providing a safe driving service to a driver by a vehicle equipped with the safe driving device as shown in FIG. 1 will be briefly described.

The central processing unit 270 of the vehicle measures the direction of each camera lens, that is, the tilt of the camera unit 110 measured by the position detecting unit 120.

The central processing unit 270 checks whether the lens direction of the camera is out of a predetermined angle direction range according to the inclination.

The central processing unit 270 corrects the camera lens direction by controlling the position sensor 120 when the lens direction of the camera is out of a predetermined angle direction range.

On the other hand, the central processing unit 270 checks the driving method, and measures the illuminance of the outside of the vehicle through the illuminance measuring unit 140 during the reverse operation.

The central processing unit 270 generates driving light to the rear of the vehicle by providing driving power to the light emitting unit 150 when the illuminance of the outside of the vehicle is equal to or less than a predetermined reference illuminance value.

In addition, the central processing unit 270 controls the position detecting unit 120 to adjust the lens direction of the rear camera in the downward direction, for example, upward 20 degrees to downward 40 degrees of the predetermined angle direction range, for example, downward 40 degrees. Control to face.

On the other hand, the central processing unit 270 selects the angle rise or fall by using the down / up key or a separate remote control of the key button located on the panel of the vehicle of the driver In this case, the lens direction of the camera is raised or lowered based on a predetermined angle.

In addition, the central processing unit 270 faces the lens direction of the rear camera downward 40 degrees when the driving power is re-applied (started up) and when the driving is reversed. Then, the lens direction of the camera is adjusted in the angular direction set by the driver during the straight running.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and changes are possible within the technical spirit of the present invention, and such modifications and modifications belong to the appended claims.

1 is a schematic block diagram illustrating an image processing apparatus for a vehicle according to the present invention;

2 and 3 are circuit diagrams for explaining the vehicle image processing apparatus according to the present invention in more detail.

<Description of the symbols for the main parts of the drawings>

110: camera unit 120: position detection unit

130: motor 140: roughness measuring unit

150: light emitting unit 200: main board

210: analog signal processing unit 220: driver unit

230: digital signal processing unit 240: reset unit

250: amplifier 260: memory

270: central processing unit 271: position correction unit

272: roughness processing unit

Claims (10)

In the image processing apparatus of a vehicle, A camera unit 110 installed on at least one side of the vehicle and configured of a plurality of cameras for capturing an image in a lens direction; A position sensor 120 for measuring a tilt of each camera of the camera unit 110 and correcting the tilt of the camera to adjust a lens direction of each camera; A motor unit 130 for providing a driving force by which the position detecting unit 120 adjusts the lens direction of each camera; When the lens direction according to the inclination of each camera measured by the position detecting unit 120 is out of a predetermined angle direction range, the motor unit 130 is controlled so that the position detecting unit 120 controls the corresponding camera. Including a central processing unit 270 to control the direction of the lens, The central processing unit 270 further includes a position correcting unit 271 that controls the lens direction of the rear camera among the cameras of the camera unit at the downward angle of the angular direction range when the vehicle is driven backward. Processing unit. The method of claim 1, wherein the camera unit 110, Four CCD (charge couple sevice) camera for converting the signal of the light into an electrical signal is installed on the front, left, right, rear side of the vehicle, characterized in that the vehicle is configured. The method of claim 1, wherein the position detecting unit 120, The image processing apparatus of the vehicle, which may be implemented by at least one kind of inclination sensor, and adjusts the lens direction of the camera by dividing the predetermined angular direction range in a predetermined step. delete The method of claim 1, wherein the position correction unit 271, And when the driver of the vehicle selects an angle rising or lowering, the camera unit controls the lens direction of the camera to be upward or downward. The image processing apparatus of claim 1, wherein the image processing apparatus of the vehicle comprises: An analog signal processor 210 for amplifying or attenuating the analog video signal received from the camera unit 110 and converting the analog video signal into a digital video signal; A digital signal processor 230 for processing the digital video signal converted by the analog signal processor 210 and storing the digital video signal in the memory unit 260 or outputting it to a display means; A reset unit 240 implemented as a reset IC to detect and reset an instantaneous change in voltage to prevent a malfunction of the image processing apparatus of the vehicle; And a driver unit (220) for transmitting a control signal to the camera unit (110). The method according to claim 1 or 6, An illuminance measuring unit 140 implemented as a photo transistor to measure external illuminance of the vehicle; The image processing apparatus of the vehicle further includes a light emitting unit (150) which is implemented as an infrared light emitting diode and illuminates the rear of the vehicle. The method of claim 7, wherein the central processing unit 270, When the illuminance value measured by the illuminance measuring unit 140 is less than a reference value during the reverse driving of the vehicle, the illuminance processing unit which controls the light emitting unit 150 to irradiate light to the rear side of the vehicle. And an image processing apparatus of the vehicle. delete delete

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