KR20170001984A

KR20170001984A - Rear view monitoring system for vehicle

Info

Publication number: KR20170001984A
Application number: KR1020150091801A
Authority: KR
Inventors: 권석근; 백승현
Original assignee: 에스엘 주식회사
Priority date: 2015-06-29
Filing date: 2015-06-29
Publication date: 2017-01-06

Abstract

According to an embodiment of the present invention, a rear view monitoring system for a vehicle comprises: a camera having a fluid lens of which curvature is varied; an image sensor generating image information by image picking up light passing through the fluid lens; a lens control unit receiving information on gears of a vehicle, and controlling the curvature of the fluid lens in accordance with the received gear information to change a view angle of the camera; and a display unit installed in the vehicle to output the image information generated by the image sensor to an image.

Description

[0001] Rear view monitoring system for vehicle [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear control system for a vehicle, and more particularly, to a rear control system for a vehicle capable of observing an image of the rear of the vehicle inside the vehicle.

Automobile safety related technology can be divided into two major areas. Active safety and passive safety. In the passive safety field, driving stability and collision safety of a vehicle are representative technologies, which are techniques for minimizing defects that can cause accidents and minimizing damage in case of an accident.

In the field of passive safety in automobiles, ADAS (Advanced Driver Assistance System) is applied to various types of vehicles. Major technologies include LDW (Lane Departure Warning System), Around View Monitoring (Bird's eye view based parking assist system) and CMS (Camera Monitor System). These systems have been applied to upper vehicle models in the early days, but they have been spreading to lower models in recent years.

Such a convenience device requires a separate camera according to each function, thus raising the cost of the vehicle and requiring time and cost for designing a space and a design necessary for mounting a plurality of cameras according to each function.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicular rear control system having various viewing angles.

Another object of the present invention is to provide a rear control system for a vehicle which performs various functions using one rear camera for a vehicle.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a vehicular rear control system including a camera including a fluid lens having a variable curvature, an image sensor for sensing light passing through the fluid lens to generate image information, And a lens control unit for controlling a curvature of the fluid lens according to the received gear range information to change an angle of view of the camera, and a lens control unit installed in the vehicle for generating the image information generated by the image sensor, And outputs it to the display unit.

The lens control unit controls the curvature of the fluid lens so that the angle of view becomes the first angle of view when the speed change stage information corresponds to the D stage and when the speed change stage information is the R stage or the P stage, The curvature of the fluid lens can be controlled such that the angle of view is a second angle of view larger than the first angle of view.

The first angle of view may range from 110 degrees to 130 degrees.

The second angle of view may have an angular range of more than 160 degrees.

Further comprising an image processing unit for analyzing a rear image of the vehicle on the basis of the image information generated by the image sensor, and when the gear range information corresponds to the D-stage, the image processing unit generates a lane in the rear image And it is possible to determine the possibility of lane departure or departure of the lane of the vehicle.

Further comprising an image processing unit for analyzing a rear image of the vehicle on the basis of the image information generated by the image sensor, wherein when the gear range information corresponds to the R-stage, the image processing unit moves in the rear image The subject can be detected and expressed on the image output to the display unit.

Further comprising an image processing unit for analyzing a rear image of the vehicle based on the image information generated by the image sensor and a vehicle control unit for controlling the trunk opening and closing of the vehicle, The image processing unit detects a preset motion in the rearward image, and the vehicle control unit may open the trunk when the image processing unit detects a preset motion in the rearward image.

Further comprising: an image processing unit for processing the image information generated by the image sensor; and a second display unit installed in the vehicle for outputting the image information processed by the image processing unit as an image, 2 may crop the rear image so that an image output to the display unit has a third angle of view smaller than the second angle of view.

The third angle of view may have an angle range of 22 degrees or more.

Wherein the fluid lens comprises a first fluid lens and a second fluid lens positioned adjacent to the image sensor than the first fluid lens and the camera comprises at least a first fluid lens and a second fluid lens disposed between the first fluid lens and the second fluid lens, And may further include one non-fluid lens.

Wherein the lens control unit controls a curvature of the first fluid lens and the second fluid lens so that the first fluid lens has a positive refracting power and the second fluid lens has a negative refracting power, Wherein the first fluid lens has a negative refracting power and the second fluid lens has a positive refracting power by controlling the curvature of the first fluid lens and the second fluid lens, The angle of view of the camera can be controlled to the second angle of view.

The fluid lens includes a fluid for entering and exiting the fluid lens, and the lens control unit controls the curvature of the fluid lens by controlling an amount of the fluid entering and exiting the fluid lens.

The fluid lens includes a fluid whose shape is controlled by a current or voltage, and the lens control unit may control a curvature of the fluid lens by applying a current or voltage to the fluid.

Other specific details of the invention are included in the detailed description and drawings.

The embodiments of the present invention have at least the following effects.

The angle of view of the rear camera of the vehicle can be adjusted without moving the lens.

A single vehicle rearview camera can be used to perform lane departure warning, MOD (Moving Object Detection), RVM (Rear View Monitoring), motion based trunk opening, and digital room mirror functions.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the specification.

1 is a block diagram illustrating a rear vehicle control system in accordance with one embodiment of the present invention.
FIG. 2 is a view showing the components of the vehicle rear control system of FIG. 1 installed in the vehicle.
FIG. 3 is a view showing the constituent elements provided outside the vehicle of the vehicle rear control system of FIG. 1. FIG.
4 is a view showing an example in which the rear camera of FIG. 1 has a first angle of view.
5 is a view showing an example in which the rear camera of FIG. 1 has a second angle of view.
FIGS. 6 to 8 are views for explaining a lane departure warning function using the vehicle rear control system of FIG. 1. FIG.
FIG. 9 is a diagram for explaining a MOD (Moving Object Detection) function using the vehicle rear control system of FIG. 1. FIG.
10 is a view for explaining a RVM (Rear View Monitoring) function using the vehicle rear control system of FIG.
FIG. 11 is a view for explaining a motion-based trunk opening function using the vehicular rear control system of FIG. 1. FIG.
FIG. 12 is a view for explaining a digital room mirror function using the vehicular rear control system of FIG. 1. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Further, the embodiments described herein will be described with reference to cross-sectional views and / or schematic drawings that are ideal illustrations of the present invention. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. In addition, in the drawings of the present invention, each component may be somewhat enlarged or reduced in view of convenience of explanation. Like reference numerals refer to like elements throughout the specification.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the drawings for describing a vehicle rear control system according to an embodiment of the present invention.

FIG. 1 is a block diagram showing a rear control system for a vehicle according to an embodiment of the present invention, FIG. 2 is a view showing the components provided inside a vehicle of the rear control system for a vehicle of FIG. 1, 1 is a view showing the components provided outside the vehicle in the vehicle rear control system of FIG. 1. FIG.

1, a vehicle rear control system according to an embodiment of the present invention includes a first display unit 10, a second display unit 20, a cluster 30, an image processing unit 40, (50) and a rear camera (70).

2, the first display unit 10, the second display unit 20, and the cluster 30 are provided in a vehicle interior.

The first display unit 10 may be a monitor mounted on a center fascia of the vehicle, and the second display unit 20 may be a rear view monitor replacing a conventional room mirror.

The cluster 30 may be configured to provide various kinds of vehicle information such as vehicle speed, engine RPM, and fuel amount to the driver. As shown in FIG. 1, the cluster 30 may be a dashboard located behind the steering wheel, and may be formed around the driver's seat to provide information that the driver can visually and / or audibly identify during operation .

As shown in Fig. 3, the trunk 60 and the rear camera 70 are provided on the outside of the vehicle, specifically in the rear of the vehicle.

The rear camera 70 is installed to face the rear of the vehicle and can be mounted, for example, at the lower end of the garnish 61 of the trunk 60, as shown in Fig.

As shown in Fig. 1, the rear camera 70 includes a lens unit 71, an image sensor 72, and a lens control unit 73. Fig.

The lens unit 71 includes at least one fluid lens 71a, 71b, 71c (see Fig. 4) in which the curvature of the lens changes as the fluid enters and exits.

The lens control unit 73 can control the curvature of the fluid lenses 71a, 71b, and 71c by controlling the amount of fluid flowing into and out of the fluid lenses 71a, 71b, and 71c.

Alternatively, the lens control unit 73 can control the curvature of the fluid lenses 71a, 71b, and 71c by applying a voltage / current to the fluid contained in the fluid lenses 71a, 71b, and 71c. In this case, the fluid contained in the fluid lenses 71a, 71b, and 71c may be fluid whose shape is controlled by current or voltage.

The lens control section 73 receives the gear range information of the vehicle from the vehicle control section 50 to be described later and controls the curvatures of the fluid lenses 71a, 71c and 71d in accordance with the received gear range information.

The wide angle of the rear camera 70 varies depending on the curvature of the fluid lenses 71a, 71b, and 71c controlled by the lens control unit 73. [

The image sensor 72 is a component that converts light received into an electrical signal. Examples of the image sensor 72 include a CCD (Charge-Coupled Device) and a CMOS (Complementary Metal Oxide Semiconductor).

The image processing unit 40 receives the image information converted into the electrical signal from the image sensor 72 and reconstructs the image information into an image and outputs the reconstructed image to the first display unit 10 and / Lt; / RTI >

In addition, the image processing unit 40 generates a video image for performing functions such as a lane departure warning, MOD (Moving Object Detection), RVM (Rear View Monitoring), motion based trunk opening, and digital room mirror based on the reconstructed image Processing is performed. Details will be described later.

The vehicle control unit 60 may be an electronic control unit (ECU) for controlling the driving system, the braking system, the steering system, and the like of the vehicle. The vehicle control section 50 transmits the gear range information of the vehicle to the lens control section 73. Also, the vehicle control unit 50 can control the opening and closing of the trunk. In addition, the vehicle control unit 50 can display various kinds of information of the vehicle through the cluster 30.

4 is a view showing an example in which the rear camera of FIG. 1 has a first angle of view.

4, the lens unit 71 of the rear camera 70 includes a first fluid lens 71a, a second fluid lens 71b, a third fluid lens 71c, and a plurality of non- 71d.

The first fluid lens 71a, the second fluid lens 71b and the third fluid lens 71c are controlled by the amount of fluid flowing into the respective lenses 71a, 71b and 71c by the lens control unit 73, Can have a varying configuration.

Alternatively, the first fluid lens 71a, the second fluid lens 71b, and the third fluid lens 71c may be lenses including a fluid whose shape is controlled by current or voltage in the lens. In this case, the lens control unit 73 can control the lenses 71a, 71b, and 71c by applying a voltage / current to the fluid in each of the lenses 71a, 71b, and 71c.

On the other hand, the non-fluid lens 71d may be a lens whose curvature is fixed and which is made of glass or plastic.

4 shows an example in which three fluid lenses 71a, 71b and 71c and a plurality of non-fluid lenses 71d are combined as an example of the configuration of the lens unit 71. However, the number of fluid lenses and non- The arrangement order and the like can be changed as needed.

The first fluid lens 71a is a lens that first receives light from the lens unit 71. As shown in FIG. 4, a plurality of non-fluid lenses 71d are provided between the first fluid lens 71a and the second fluid lens 71b. The plurality of non-fluid lenses 71d perform functions to improve the optical axis adjustment, light collection, vignetting, spherical aberration, chromatic aberration, and the like of the lens unit 71. [

The second fluid lens 71b receives light passing through the plurality of non-fluid lenses 71d and the third fluid lens 71c is arranged to receive light passing through the second fluid lens 71b.

4, the lens controller 73 controls the curvature of the first fluid lens 71a so that the first fluid lens 71a has a positive refracting power so that the rear camera 70 has a first angle of view And the curvatures of the second fluid lens 71b and the third fluid lens 71c are controlled so that the second fluid lens 71b and the third fluid lens 71c have a negative refracting power.

As shown in FIG. 4, the first fluid lens 71a whose curvature is controlled to have a positive refracting power refracts the light L1, L2, L3 to converge. Light L1, L2 and L3 passing through the first fluid lens 71a passes through the plurality of non-fluid lenses 71d and then passes through the second fluid lens 71b and the third fluid lens 71c sequentially And is refracted.

As shown in FIG. 4, the second fluid lens 71b and the third fluid lens 71c whose curvature is controlled to have a negative refracting power refract to diffuse the light L1, L2, and L3.

4, when the first fluid lens 71a is controlled to have a positive refracting power and the second fluid lens 71b and the third fluid lens 71c are controlled to have a negative refracting power, The light incident on the imaging element 72 becomes a narrow angle of view. 4, a part L1 of light L1, L2, L3 incident on the first fluid lens 71a is transmitted through the second fluid lens 71b and the third fluid lens 71b, 71c and may not be incident on the imaging element 72. [ In this case, the rear camera 70 obtains an image with a narrower angle of view.

On the other hand, Fig. 5 is a diagram showing an example in which the rear camera of Fig. 1 has a second angle of view. The second angle of view means an angle of view larger than the first angle of view.

5, the lens controller 73 controls the curvature of the first fluid lens 71a so that the first fluid lens 71a has a negative refracting power so that the rear camera 70 has a second angle of view. And the second fluid lens 71b and the third fluid lens 71c control the curvature of the second fluid lens 71b and the third fluid lens 71c so as to have a positive refracting power.

As shown in FIG. 5, the first fluid lens 71a whose curvature is controlled to have a negative refracting power refracts the light L4 and L5 to diffuse. Light L4 and L5 having passed through the first fluid lens 71a pass through the plurality of non-fluid lenses 71d and then sequentially pass through the second fluid lens 71b and the third fluid lens 71c Refracted.

As shown in FIG. 5, the second fluid lens 71b and the third fluid lens 71c whose curvatures are controlled to have a positive refracting power refract so that the lights L4 and L5 converge.

5, when the first fluid lens 71a is controlled to have a negative refracting power and the second fluid lens 71b and the third fluid lens 71c are controlled to have a positive refracting power, The light incident on the imaging element 72 becomes a wide angle of view.

The rear camera 70 photographs an image of a first angle of view in the state of FIG. 4, and the first angle of view may have an angle range of 110 degrees to 130 degrees. Further, the rear camera 70 photographs an image of the second angle of view in the state of FIG. 5, and the second angle of view may have an angular range of 160 degrees or more.

The first fluid lens 71a and the third fluid lens 71c are controlled by adjusting the curvature or refracting power of the first fluid lens 71a, the second fluid lens 71b and the third fluid lens 71c, as shown in FIGS. 4 and 5, The focal length of each fluid lens 71a, 71b, 71c can be adjusted without changing the relative distance between at least one of the second fluid lens 71b, the third fluid lens 71c, and the image sensor 72, As a result, the angle of view of the lens unit 71 can be adjusted.

Conventional cameras adjust the angle of view of the camera by moving the lens to adjust the focal length. However, the camera for adjusting the angle of view by moving the lens requires a structure for moving the lens and a space for moving the lens, which is not suitable for use as a rear camera for a vehicle.

Thus, in the present embodiment, the angle of view of the rear camera 70 is adjusted by using a fluid lens that can change the focal distance without moving the lens.

FIGS. 6 to 8 are views for explaining a lane departure warning function using the vehicle rear control system of FIG. 1. FIG.

The lane departure warning function can be activated when the lane departure warning function is in the D range.

That is, the lens control unit 73 receives the gear range information of the vehicle from the vehicle control unit 50, and when the current speed range of the vehicle is D, the first fluid lens 71a, The second fluid lens 71b and the third fluid lens 71c control the curvature of the first fluid lens 71a so as to have a positive refractive power and the second fluid lens 71b and the third fluid lens 71c have a negative refractive power, The curvature of the third fluid lens 71c can be controlled.

As a result, the rear camera 70 has a relatively narrow first angle of view. Preferably, for the lane departure warning function, each fluid lens 71a, 71b, 71c can be controlled such that the rear camera 70 has an angle of view of 120 degrees.

6, the image processing unit 40 receives image information from the image sensor 72, and generates an image I1 photographed by the rear camera 70. [

The image processing unit 40 recognizes the lane A in the image I1 and determines whether or not the lane of the vehicle is deviated from the lane A in the image I1.

For example, as shown in FIG. 7, when the lane A on one side of the image I2 exceeds a predetermined threshold line B, the image processing unit 40 determines that the vehicle is out of the lane It can be judged. Then, it is possible to determine that the possibility that the vehicle leaves the lane exists when the lane A on one side in the image I2 is close to the predetermined threshold line B can be determined.

The image processing unit 40 transmits a lane departure warning signal to the vehicle controller 50 when it is determined that there is a lane departure possibility of the vehicle or when the vehicle is determined to have departed from the lane. The vehicle controller 50, which has received the lane departure warning signal from the image processor 40, covers the lane departure warning through the cluster 30 as shown in FIG.

8 shows a case in which the lane departure warning is marked through the cluster 30 on the instrument panel. However, the cluster 30 may be formed separately in the vicinity of the driver's seat in addition to the instrument panel, / RTI > and / or audibly identifiable information.

The conventional lane departure warning function is mainly a method of acquiring an image of the front of the vehicle through a camera provided separately in front of the vehicle and recognizing the lane in the image of the vehicle ahead, The lane departure warning function according to this embodiment acquires an image of the rear of the vehicle using a rear camera, recognizes the lane in the acquired image of the rear of the vehicle, and detects the possibility of lane departure and lane departure on the basis of the detected lane.

The lane departure warning function according to the present embodiment may be operated only when the speed change stage is at the D-end and the vehicle speed is equal to or higher than a constant speed.

In this case, the vehicle control section 50 can transmit the speed information of the vehicle together with the gear range information of the vehicle to the lens control section 73. [ The lens control unit 73 can receive the speed change information and the speed information of the vehicle from the vehicle control unit 50 and control the respective fluid lenses 71a, 71b, and 71c to perform the above-described functions.

FIG. 9 is a diagram for explaining a MOD (Moving Object Detection) function using the vehicle rear control system of FIG. 1. FIG.

MOD (Moving Object Detection) is a function to detect a moving object from the rear of the vehicle through the rear image of the vehicle. It is a function to prevent an accident by detecting a pedestrian or an obstacle present in a blind spot in the rear of the vehicle and allowing the driver to recognize it.

The MOD function operates when the speed change stage is located at the R-stage.

That is, the lens control unit 73 receives the gear range information of the vehicle from the vehicle control unit 50, and when the gear range of the present vehicle is at the R range, as shown in Fig. 5, the first fluid lens 71a The second fluid lens 71b and the third fluid lens 71c control the curvature of the first fluid lens 71a so that the second fluid lens 71b has a negative refracting power. And the curvature of the third fluid lens 71c.

As a result, the rear camera 70 has a relatively wide second angle of view. Preferably, each fluid lens 71a, 71b, 71c can be controlled so that the rear camera 70 has an angle of view of 180 degrees.

9, the image processing unit 40 receives the image information from the image sensor 72, and generates images photographed by the rear camera 70. As shown in FIG.

The image processing unit 40 detects moving objects C1 to C3 by comparing the images sequentially captured in chronological order for each of the frames F1 to F3.

For example, the image processing unit 40 detects the subject C3 within the current frame F3 and compares the current frame F3 with the previous frames F2 and F1 to compare the current frame F3 with the previous frame F2, It is possible to detect a moving subject by comparing the relative positions of the moving objects C2 and C1.

The image processing unit 40 can display an image photographed at a second angle of view through the first display unit 10. [

When the moving subjects C1 to C3 are detected, as shown in FIG. 9, the frames surrounding the objects C1 to C3 are displayed on the first display unit 10 together with the frames F1 To F3 so that the driver can intuitively confirm the objects C1 to C3 moving through the first display unit 10. [ At the same time, an audible alarm alarm can be generated through the vehicle control unit 50.

10 is a view for explaining a RVM (Rear View Monitoring) function using the vehicle rear control system of FIG.

The RVM (Rear View Monitoring) function is to display the rear image of the vehicle through a monitor inside the vehicle.

The RVM function can be operated with the speed change stage at the R-stage.

10, the image processing unit 40 receives the image information from the image sensor 72, and generates the image I3 photographed by the backward camera 70. As shown in FIG.

After that, the image processing unit 40 crops the central region Z1 of the image I3 and displays it through the first display unit 10. [ Images with an angle of view of 180 degrees are so distorted that users may not be intuitively aware of the rearward situation through the images.

Therefore, the image processing unit 40 displays only the center area Z1 in the first display unit 10 and the edge area Z2 of the image I3 in the image I3. The image processing unit 40 crops the image I3 so that the central region Z1 has a smaller angle of view than the second angle of view. However, it is preferable that the angle of view of the central region Z1 is selected within an angle range of 130 degrees or more.

When the MOD function described above is implemented at the same time, as shown in FIG. 10, image processing for the image I3 can be performed such that a box surrounding the moving subject is displayed through the first display unit 10 .

FIG. 11 is a view for explaining a motion-based trunk opening function using the vehicular rear control system of FIG. 1. FIG.

The motion-based trunk open function is a function to open a trunk by detecting a user's specific behavior, rather than opening the trunk using a conventional automobile key or a remote controller. As shown in FIG. 11, when the user 1 is holding a load on both hands, it is difficult to use a car key or a remote control device, so that the trunk can be opened with a motion of moving one leg left or right or back and forth.

The motion-based trunk release function can be operated with the speed change stage in the P-stage.

That is, the lens control unit 73 receives the gear range information of the vehicle from the vehicle controller 50, and when the current speed range of the vehicle is at the P-stage, as shown in Fig. 5, the first fluid lens 71a The second fluid lens 71b and the third fluid lens 71c control the curvature of the first fluid lens 71a so that the second fluid lens 71b has a negative refracting power. And the curvature of the third fluid lens 71c.

The curvature of each of the fluid lenses 71a, 71b, and 71c is set to the state shown in FIG. 5 so that the rear camera 70 maintains the second angle of view when the vehicle is in the P- .

The image processing unit 40 receives the image information from the image sensor 72 to generate an image captured by the rear camera 70. The image processing unit 40 compares the images continuously shot in chronological order for each frame, It is determined whether or not the set motion has been performed.

For example, if the preset motion is an operation in which the user 1 shakes the leg once or twice left and right at the rear of the vehicle 100, the image processing unit 40 extracts the legs in the successively photographed images , And determines whether or not the corresponding motion is performed by a combination of consecutively photographed images.

If it is determined that the motion for trunk opening is normally performed through the analysis of the continuously shot images, the image processing unit 40 transmits a trunk opening signal to the vehicle controller 50. [ The vehicle controller 50, which has received the trunk open signal from the image processor 40, performs control to open the trunk 60. [

In the case of a vehicle in which a smart key is used, the vehicle control unit 50 detects a communication with the smart key or a signal received from the smart key to determine whether the smart key is located adjacent to the vehicle, The trunk 60 can be opened only when it is located.

FIG. 12 is a view for explaining a digital room mirror function using the vehicular rear control system of FIG. 1. FIG.

2 and 12, the digital room mirror is provided with a monitor (the second display portion 20) at the position of the existing room mirror, and the rear of the vehicle is photographed (Second display unit 20) to display an image obtained through the camera.

The digital room mirror function can always be operated when the vehicle is turned on regardless of the speed range.

In order to perform the digital room mirror function, the image processing unit 40 receives the image information from the image sensor 72 and generates the image I4 photographed by the rear camera 70. [

Then, the image processing unit 40 crops the central area Z3 of the image I4 and displays it through the second display unit 20. [

That is, the image processing unit 40 displays only the center region Z3 on the second display unit 20 and the edge region Z4 of the image I4 on the image I4. The image processing unit 40 crops the image I4 so that the central region Z3 has a smaller angle of view than the second angle of view.

Also, the room mirror is required to have a field of view of 20 meters left and right at a distance of 60 meters behind and 60 meters behind the room mirror. Further, it is required that a visual field of 22.4 degrees or more is secured in the left and right. Accordingly, the image processing unit 50 may crop the image I4 so that the image of the central region Z3 satisfies this requirement. [0064] Further, the central region Z3 may have an aspect ratio, It is preferable to perform the cropping process so as to be the same as that of the first embodiment.

As described above, the vehicular rear control system according to the embodiment of the present invention adjusts the wide angle by using the fluid lens, thereby making it possible to use a rearview camera for a vehicle to detect a lane departure warning function, a Moving Object Detection (MOD) View Monitoring, motion-based trunking, and digital room mirroring.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

10: first display 20: second display
30: Cluster 40: Image processing unit
50: vehicle control section 60: trunk
70: rear camera 71: lens unit
71a: first fluid lens 71b: second fluid lens
71c: third fluid lens 71d: non-fluid lens
73: lens control unit 100:

Claims

A camera including a fluid lens whose curvature is variable;
An image sensor for capturing light passing through the fluid lens to generate image information;
A lens control unit for receiving the gear range information of the vehicle and controlling the curvature of the fluid lens according to the received gear range information to change the angle of view of the camera; And
And a display unit installed inside the vehicle and outputting the image information generated by the image sensor as an image.

The method according to claim 1,
The lens control unit controls the curvature of the fluid lens such that the angle of view is a first angle of view,
Wherein the lens control unit controls the curvature of the fluid lens so that the angle of view is a second angle of view larger than the first angle of view when the speed-change terminal information is R-stage or P-stage.

3. The method of claim 2,
Wherein the first angle of view has an angular range of 110 degrees to 130 degrees.

3. The method of claim 2,
Wherein the second angle of view has an angular range of greater than or equal to 160 degrees.

3. The method of claim 2,
Further comprising an image processing unit for analyzing a rear image of the vehicle based on the image information generated by the image sensor,
When the gear range information corresponds to the D range,
Wherein the image processing unit detects a lane in the backward image and determines whether the vehicle is leaving the lane or departing from the lane.

3. The method of claim 2,
Further comprising an image processing unit for analyzing a rear image of the vehicle based on the image information generated by the image sensor,
When the gear range information corresponds to the R-stage,
Wherein the image processing unit detects a moving subject in the rear image and expresses the moving subject on an image output to the display unit.

3. The method of claim 2,
An image processor for analyzing a rear image of the vehicle based on the image information generated by the image sensor,
Further comprising a vehicle control section for controlling the trunk opening and closing of the vehicle,
When the speed change stage information corresponds to the P stage,
Wherein the image processing unit detects a preset motion in the backward image,
Wherein the vehicle control section opens the trunk when the image processing section detects a preset motion in the rear image.

3. The method of claim 2,
An image processor for processing the image information generated by the image sensor;
Further comprising a second display unit installed in the vehicle and outputting the image information processed by the image processing unit as an image,
Wherein the image processing unit crops the rear image so that an image output to the second display unit has a third angle of view smaller than the second angle of view.

9. The method of claim 8,
Wherein the third angle of view has an angular range of 22 degrees or greater.

The method according to claim 1,
The fluid lens comprising a first fluid lens and a second fluid lens positioned adjacent to the image sensor than the first fluid lens,
Wherein the camera further comprises at least one non-fluid lens provided between the first fluid lens and the second fluid lens.

11. The method of claim 10,
The lens control unit includes:
Wherein the first fluid lens has a positive refracting power and the second fluid lens has a negative refracting power so as to control a curvature of the first fluid lens and the second fluid lens, Respectively,
Wherein the first fluid lens has a negative refracting power and the second fluid lens has a positive refracting power so as to control a curvature of the first fluid lens and the second fluid lens, To the vehicle rear control system.

The method according to claim 1,
Wherein the fluid lens includes a fluid for entering and exiting the fluid lens,
Wherein the lens control unit controls the curvature of the fluid lens by controlling an amount of the fluid entering and exiting.

The method according to claim 1,
The fluid lens includes a fluid whose shape is controlled by a current or a voltage,
Wherein the lens control unit controls a curvature of the fluid lens by applying a current or voltage to the fluid.