KR20230010111A - Display controlling apparatus for rear image of vehicle - Google Patents

Abstract

The present invention relates to a display controlling apparatus for a rear image of a vehicle, which enables a driver to accurately recognize a rear state of a vehicle when driving the vehicle and improves convenience when the vehicle moves backward or parks, by automatically expanding and displaying only an image in a predetermined area when the vehicle goes backward, in a truck or a commercial vehicle in which the driver cannot accurately recognize the rear state of the vehicle. The display controlling apparatus for a rear image of a vehicle includes: a gear position sensor detecting a gear state position of the vehicle (truck or the commercial vehicle) and outputting gear state information; an object sensor sensing a rear object of the vehicle; an image obtaining unit for obtaining a rear image of the vehicle; a control unit controlling expansion and a display image of the rear image based on the gear state information and object sensing information; and a display unit displaying the rear image on a screen.

Description

Display controlling apparatus for rear image of vehicle}

The present invention relates to an apparatus for displaying and controlling a rear image of a vehicle, and in particular, in a vehicle or commercial vehicle in which it is difficult for a driver to accurately recognize the state of the rear of the vehicle, when the vehicle is in reverse, only an image of a specific region is automatically enlarged and displayed. The present invention relates to a rear image display control device for a vehicle that accurately recognizes the rear state of the vehicle and improves convenience when reversing or parking the vehicle.

In general, as a means for safe driving in a vehicle, a side mirror is installed on a side door to secure a rear view of the side and a room mirror is installed on a roof lining of a vehicle interior to secure a rear view of the vehicle. ) is there.

Side and rear situations can be grasped up to a certain level by these mirrors, but an area insufficient to recognize the rear situation, that is, a blind spot invisible by the mirror may also occur. When there is an object or a person in such a blind spot, damage may occur due to a collision of a vehicle, as well as human casualties.

Here, when the vehicle is a loaded vehicle or a commercial vehicle, there is a room mirror for checking the rear, but in the case of a loaded vehicle, equipment such as a container is often installed at the rear, making it impossible to check the rear. In the case of a commercial vehicle, it is possible to check the rear through a small window formed behind the driver's seat using a room mirror, but even in the case of a commercial vehicle, it is almost impossible to check the rear through the room mirror due to actual cargo, as most of them are used for cargo transportation. Therefore, since it is almost impossible to check the rear through a room mirror in the case of a loaded vehicle or commercial vehicle, vehicle damage occurs due to collision with a rear object when driving in reverse, and sometimes personal accidents often occur.

In order to prevent blind spots at the rear of the vehicle and accidents that occur when driving backwards in a truck or commercial vehicle, a rear surveillance camera for rear monitoring is installed in the vehicle, and an image from the rear of the vehicle is displayed on the screen through a display device, so that the driver can A technique for a rear monitoring system that enables safe driving by more easily and accurately recognizing the situation behind the vehicle has been proposed.

As is well known, a technology that is mounted on a vehicle and monitors the rear of the vehicle and displays it as an image has been disclosed in <Patent Document 1> to <Patent Document 3>.

The prior art disclosed in <Patent Document 1> not only eliminates blind spots in the rear view but also improves vehicle design by allowing the vehicle to watch the rear of the vehicle or airwaves broadcasting according to the driving conditions of the vehicle through a room mirror provided in the interior of the vehicle. Inconvenience due to the installation of equipment not considered at the time of installation is eliminated.

The prior art disclosed in <Patent Document 2> consists of a room mirror housing, a half mirror installed on the front of the room mirror housing, a display panel installed on the back of the half mirror and equipped with a permanent magnet, and an electromagnet corresponding to the permanent magnet, By outputting the image captured by the rear camera of the vehicle to the internal display panel of the rearview mirror for the vehicle, the driver can easily observe the rear screen when reversing, thereby preventing accidents and damage to the vehicle.

In the prior art disclosed in <Patent Document 3>, the present inventor applied for a patent and registered a patent, and the starting switch for detecting the starting state, the direction change switch for detecting the change in direction, the gear position sensor for detecting the position of the gear state, and the vehicle a distance detection sensor for detecting a distance between the rear detection object and an image acquisition unit for obtaining side and rear images of the vehicle; A control unit that controls the display of images on the room mirror and displays the distance, displays images of the rear and side of the vehicle on the room mirror, and selects the displayed image according to the starting state, direction change state, and reverse gear position. displayed on the room mirror.

However, the prior art as described above monitors the rear of the vehicle and displays it on the room mirror, so that the driver can secure a rear view when parking or reversing. There are flaws that cannot be expressed.

In addition, the prior art has a disadvantage in that the rear camera cannot optimally photograph the detected object by following the detected object. For example, since the rear camera is fixed at a specific position and takes pictures of the rear, the driver may not be able to identify the rear object through the display device even when an alarm sound is generated by detecting a rear object with an actual distance sensor.

Republic of Korea Patent Publication No. 2002-0009711 (published on February 2, 2002) (image realization device using room mirror) Republic of Korea Patent Registration No. 10-0792933 (Announced on January 8, 2008) (room mirror for automobile and rear detection system equipped with the same) Republic of Korea Patent Registration No. 10-1400419 (2014.05.21. registration) (image display device using room mirror of vehicle)

Therefore, the present invention is proposed to solve the limitations of checking the side and rear of a vehicle using a side mirror or room mirror of a general vehicle as described above and various problems occurring in the prior art using a rear surveillance camera, In a truck or commercial vehicle where it is difficult to accurately recognize the condition behind the vehicle, when the vehicle is reversing, only the image of a specific area is automatically enlarged and displayed so that the rear state of the vehicle is accurately recognized when driving and convenience is improved when reversing or parking the vehicle. The purpose is to provide a rear image display control device of a vehicle to promote.

Another object of the present invention is to provide an apparatus for displaying and controlling a rear image of a vehicle, which enlarges and displays a rear image following an object when a rear object is detected, thereby promoting safety when a driver drives in reverse.

In order to achieve the above object, the "vehicle rear image display control device" according to the present invention,

As a device for displaying a rear image of a vehicle or commercial vehicle,

a gear position sensor that detects a gear state position of the vehicle and outputs gear state information;

an object detection sensor for detecting an object behind the vehicle;

an image acquisition unit for acquiring a rear image of the vehicle;

a control unit controlling a display image and enlargement of a rear image based on the gear state information and the object detection information; and

It is characterized in that it includes a display unit that displays a rear image on a screen under the control of the controller.

In the above, the control unit,

Based on the gear state information, when the vehicle is moving forward, the rear image of the vehicle obtained by the image acquisition unit is displayed on the screen of the display unit as it is, and when the vehicle is moving backward, an image of a specific area is displayed based on object detection information and rear image information. It is characterized in that only is enlarged and expressed on the screen of the display unit on the screen.

In the above, the specific area,

It is characterized in that it is a screen area in which the position where an object is detected in the entire screen area is estimated or, if a parking line is searched for in the rear image, a screen area including only certain left and right areas centered on the searched parking line.

In order to achieve the above object, the "vehicle rear image display control device" according to the present invention,

a mode setting unit for setting a rear image mode in which the image taken by the rear camera is displayed on the screen as it is and a rear image enlargement mode in which only a specific region of the image taken by the rear camera is enlarged and displayed on the screen; and

It may further include an alarm sound generating unit generating an alarm sound corresponding to a differential alarm sound generating signal according to a distance to the sensing object under the control of the control unit and transmitting the alarm sound through a speaker.

In the above, the control unit,

a gear position recognition unit recognizing a gear position using gear position information obtained from the gear position sensor;

an object position estimating unit estimating an object position based on the object detection information acquired by the object detection sensor;

a display image determination unit determining a screen area of an image to be displayed on a screen based on the gear position information and the object position information;

a display image enlargement unit enlarging an image corresponding to the screen area determined by the display image determination unit; and

It is characterized in that it includes an image display control unit for controlling the display of the rear image enlarged by the display image enlarger.

In the above, the display image enlargement unit,

It is characterized in that the image corresponding to the screen area is enlarged to the entire screen size.

According to the present invention, in a truck or commercial vehicle where it is difficult for the driver to accurately recognize the state behind the vehicle, only the image of a specific area is automatically enlarged and displayed when the vehicle is in reverse, so that the driver can accurately recognize the state behind the vehicle while driving. It has the effect of improving convenience when parking.

In addition, according to the present invention, when a rear object is detected, a rear image following the object is enlarged and displayed, thereby promoting safety during reverse driving.

1 is a configuration diagram of a rear image display control device for a vehicle according to a preferred embodiment of the present invention;
Figure 2 is a block configuration diagram showing an embodiment of the control unit of Figure 1;
3 is an example of a rear image taken by a rear surveillance camera in the present invention;
4 is an exemplary screen view in which only an image of a specific area is enlarged in a rear image captured by a rear surveillance camera in the present invention.

Hereinafter, an apparatus for controlling a display of a rear image of a vehicle according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The terms or words used in the present invention described below should not be construed as being limited to a conventional or dictionary meaning, and the inventor may appropriately define the concept of the term in order to explain his/her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical spirit of the present invention based on the principle that it can be.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only preferred embodiments of the present invention, and do not represent all of the technical spirit of the present invention, so various equivalents and equivalents that can replace them at the time of the present application It should be understood that variations may exist.

1 is a configuration diagram of a rear image display control device 100 of a vehicle according to a preferred embodiment of the present invention, including a mode setting unit 101, a start switch 102, a gear position sensor 103, an object detection sensor ( 104), control unit 105, rear camera 106, image acquisition unit 107, camera driving unit 108, display unit 109, speaker 110, alarm sound generating unit 111 and memory 112 includes

In the present invention, a vehicle means a truck or a commercial vehicle.

The mode setting unit 101 is a rear image mode in which the image captured by the rear camera 106 is displayed on the screen as it is, and an image captured by the rear camera 106 is enlarged and displayed on the screen. It serves to set the rear image enlargement mode. Such mode setting may be implemented by physically implementing a mode setting button or by implementing the screen of the display unit 109 as a touch panel and implementing a software mode setting through a touch. When the display unit 109 is implemented as a touch screen, when the driver touches a specific screen area, the corresponding area is set as selected.

The ignition switch 102 serves to detect the starting state of the vehicle, and is generally preferably installed in the key box of the vehicle.

The gear position sensor 103 serves to detect the gear state position (gear position) of the vehicle and output gear state information to the control unit 105 . In the present invention, it is assumed that the forward gear state (drive state, D-range) is set by default, and the reverse gear state (R-range) is detected when the gear position detection signal is generated from the gear position sensor 103.

The object detection sensor 104 serves to detect an object behind the vehicle, and transmits object detection information to the controller 105 when the object is detected. Various known object detection sensors may be used as the object detection sensor 104, and an ultrasonic sensor will be described as an example in the present invention. Here, it is preferable that the object detection sensor 104 detects the position of the rear of the vehicle by region so as to distinguish the object detection region from the image of the rear of the vehicle. To this end, a plurality of object detection sensors may be used for each sensing area. In addition, the object detection sensor 104 may also calculate an object detection distance.

The image acquisition unit 107 serves to pre-process the image taken by the rear camera 106 and transmit it to the control unit 105 as a rear image of the vehicle.

The controller 105 serves to control the display image and enlargement of the rear image based on the gear state information and the object detection information. The control unit 105 may be implemented as a control device such as a microprocessor, a central processing unit, or a controller.

The controller 105 displays the rear image of the vehicle obtained by the image acquisition unit 107 on the screen of the display unit 109 as it is when the vehicle is in a forward state (drive state, gear D) based on the gear state information. When the vehicle is in a reverse state (R range), only an image of a specific region is enlarged based on the object detection information and the rear image information, and is controlled to be displayed on the screen of the display unit 109.

Here, the specific area may be a screen area in which a location where an object is detected is estimated in the entire screen area or, when a parking line is searched for in the rear image, a screen area including only certain left and right areas centered on the searched parking line.

As shown in FIG. 2, the controller 105 uses the mode recognition unit 121 that recognizes the mode set by the mode setting unit 101 and the gear position information obtained from the gear position sensor 103 to determine the gear position. gear position recognition unit 122 for recognizing, an object position estimation unit 123 for estimating an object position based on the object detection information obtained from the object detection sensor 104, based on the gear position information and the object position information a display image determining unit 124 that determines a screen area of an image to be displayed on the screen, a display image enlarger 125 that enlarges an image corresponding to the screen area determined by the display image determining unit 124, and the display An image display control unit 126 for controlling the display of the rear image enlarged by the image enlarger 125 is included.

The display image enlarger 125 may enlarge the image corresponding to the screen area to the entire screen size.

The display unit 109 serves to display a rear image on the screen under the control of the controller 105. The display unit 109 may use a navigation system provided in the vehicle or a separate display unit. The use of a touch panel provides convenience for a user's manipulation signal input or selection of a specific area on the screen.

The alarm sound generation unit 111 plays a role of generating an alarm sound corresponding to a differential alarm sound generation signal according to a distance to a sensing object and transmitting it through the speaker 110 under the control of the control unit 105 .

The memory 112 has a built-in image display control program for controlling the display of a rear image, and also serves to store a photographed rear image as needed.

The operation of the vehicle rear image display control device 100 according to a preferred embodiment of the present invention configured as described above will be described in detail.

First, the driver sets the display mode of the rear image captured by the rear camera 106 through the mode setting unit 101 before or while driving the vehicle. The display mode of the rear image is set by default to the rear image mode in which the captured rear image is displayed on the screen as it is, and according to the driver's selection, only the image of a specific area is enlarged from the image captured by the rear camera 106 and displayed on the screen. You can set the rear image enlargement mode to be displayed on . When starting the vehicle, the previous selection mode is applied.

The rear image display mode set through the mode setting unit 101 is transmitted to the control unit 105 .

The control unit 105 detects the starting state of the vehicle through the start switch 102, and if the vehicle is in the starting state, the display mode of the rear image of the vehicle set in the mode setting unit 101 and the gear position sensor 103 Based on the detected gear state position (gear position) information of the vehicle and the object detection information obtained from the object detection sensor 104, the display of the rear image of the vehicle photographed by the rear camera 106 is determined.

That is, when the vehicle is started, the control unit 105 operates the rear camera 106 through the camera driving unit 108 . When the rear camera 106 starts operating, it photographs the rear of the vehicle and generates a captured image, and the image acquisition unit 107 pre-processes the generated rear image of the vehicle and transmits the image to the controller 105 as a rear image of the vehicle.

The display image determination unit 124 of the control unit 105 acquires the gear state information acquired through the gear position recognition unit 122 from the image acquisition unit 107 when the vehicle is in a forward state (drive state, gear D). The rear image of the vehicle is determined so that the rear image of the vehicle is displayed on the screen of the display unit 109 as it is.

The image display control unit 126 transfers the display image determined by the display image determination unit 124 to the display unit 109 so that an image behind the vehicle is displayed on the screen.

A method of displaying an image from the rear of the vehicle is the same as a method of displaying an image captured using a rear camera in a general vehicle on a screen.

Since the vehicle to which the present invention is applied is a loaded vehicle or a used vehicle, an image from the rear of the vehicle is displayed on the screen even when the gear position (shift position) is in the drive stage (D stage).

Next, when the driver places the gear position in the reverse position (R range) to reverse the vehicle while driving, the gear position sensor 103 detects it and transmits it to the control unit 105.

When the gear position detection signal is generated, the gear position recognition unit 122 of the control unit 105 recognizes that the gear position is in the reverse gear state (R range), and transmits the recognized gear state information to the display image determination unit 124.

When the reverse gear state information is transmitted, the display image determining unit 124 checks whether the mode recognized through the mode recognizing unit 121 is the rear image enlargement mode. Here, if the rear view display mode is the rear image mode, regardless of the reverse gear state information, the display image determination unit 124 displays the rear image of the vehicle acquired by the image acquisition unit 107 on the screen of the display unit 109 as it is. Determine the posterior image.

The image display control unit 126 transfers the display image determined by the display image determination unit 124 to the display unit 109 so that an image behind the vehicle is displayed on the screen.

On the other hand, the display image determination unit 124 transmits the reverse gear state information and if the rear image display mode transmitted through the mode recognition unit 121 is the rear image enlargement mode, the object position estimation unit 123 determines the object position. Check that the position is estimated.

Here, when the vehicle is started, the object detection sensor 104 detects an object behind the vehicle and transmits object detection information to the control unit 105 when the object is detected. Here, the object detection sensor 104 classifies and detects the location of the rear of the vehicle by region so as to distinguish the object detection region from the image of the rear of the vehicle. In addition, when an object is detected, the location information of the detected area and the distance information to the object are delivered to the controller 105 together.

For example, the object detection sensor 104 uses a conventional ultrasonic sensor and installs at least one of them on the left, right, and center of the rear of the vehicle to detect the object and the distance between the vehicle and the rear detection object. . As a result, the controller 105 recognizes the distance between the object detection area (position) and the object.

When the vehicle is in a reverse state (R range), the control unit 105 generates an alarm sound generation signal according to the object detection information and the distance information to the object, and transmits it to the alarm sound generator 111 . Here, the alarm sound generating signal basically generates a set alarm sound when the distance between the object and the vehicle is outside the set distance, as in the past, and if the distance between the object and the vehicle is within the set distance, the risk of collision is considered and the collision risk alarm to make a sound

The alarm sound generation unit 111 generates an alarm sound corresponding to a differential alarm sound generation signal according to a distance to a sensing object under the control of the control unit 105 and transmits the alarm sound through the speaker 110 .

In addition, the display image determining unit 124 uses the object position information estimated by the object position estimating unit 123 to determine a specific region, that is, a screen, which is an image position to be enlarged in the image of the rear of the vehicle acquired by the image acquisition unit 107. determine the area

For example, the entire rear image is divided into three regions, left, front, and right, and when object detection information is detected from the left side with respect to the rear of the vehicle, the image of the left divided region is determined as the display image. If the object detection information is on the right side based on the rear of the vehicle, the image in the right segmented area is determined as the display image, and if the object detection information is the front based on the rear of the vehicle, the image in the front area among the 3 segmented areas is determined as the display image. Decide. Here, the 3-division area may have the same or different size for each divided area. For example, the frontal area may be relatively large compared to the left and right divided areas, or the left and right divided areas may be relatively large compared to the frontal area.

The display image enlarger 125 enlarges only the image of the specific region determined by the display image determiner 124 and transmits the image to the display unit 109 . That is, the display image enlarger 125 enlarges the image corresponding to the screen area to the entire screen size.

The display unit 109 displays the transmitted enlarged image on the screen so that the driver can accurately recognize the situation of the part where the object is detected when driving the vehicle in reverse, thereby promoting safe driving by avoiding a collision. In particular, if the image of the object detection area is enlarged and displayed on the screen while the vehicle is driving backwards, the driver can accurately identify in which direction the object is located in the vehicle, thereby avoiding vehicle collision. There is also a vehicle that informs the object detection location through an alarm sound and visual display, but this only informs that there is an object in the corresponding direction, and it does not give the driver the exact shape and size of the object. . In particular, when a sensing object on the screen is very small, it is common for a driver to fail to identify it and collide with the object. In order to prevent such a collision accident, the present invention shows an object detection position and an object image so that the driver can accurately recognize the position of the detected object, the shape and size of the object, and promote safe driving.

Meanwhile, the display image determination unit 124 may determine the display image using the object detection location information detected by the object detection sensor 104 as described above, but in other ways, the display image may be displayed even in a situation where there is no object detection information. can decide

That is, the parking line is searched in the rear image captured using the image recognition method. A method of detecting a parking line from the captured image may use a lane detection algorithm used in a vehicle-mounted lane departure prevention device (LDW).

When a parking line is searched for using the lane detection algorithm, a display image is determined for a screen area including only certain left and right areas centered on the searched parking line.

Here, when a plurality of parking lines are searched, the most searched parking line centered on the vehicle is determined as a parking area in which the driver will park, and images of certain areas on the left and right are included as images for display based on the parking line of the parking area. Decide.

That is, as shown in FIG. 3, when the rear of the vehicle is photographed and a parking line is searched for from the photographed rear image, only a certain area on the left and right of the searched parking line is determined as a display image.

The display image enlarger 125 automatically enlarges only the image of the specific area determined by the display image determiner 124 and transmits the image to the display unit 109 . That is, as shown in FIG. 4, the display image enlarger 125 enlarges the image corresponding to the screen area to the entire screen size.

The display unit 109 displays the transmitted enlarged image on the screen so that the driver can accurately identify the parking line when parking the vehicle in reverse.

Since the driver accurately identifies the parking line, it is possible to accurately park the vehicle through this, thereby improving the driver's convenience.

According to the present invention described above, in a truck or commercial vehicle in which it is difficult for the driver to accurately recognize the state behind the vehicle, only the image of a specific area is automatically enlarged and displayed when the vehicle is in reverse, so that the driver accurately recognizes the state behind the vehicle when driving Improve convenience when reversing or parking the vehicle.

In addition, when a rear object is detected, the rear image following the object is enlarged and displayed, so that the driver can promote safety when driving in reverse.

Although the invention made by the present inventors has been specifically described according to the above embodiments, the present invention is not limited to the above embodiments, and it is common knowledge in the art that various changes can be made without departing from the gist of the present invention. It is self-evident to those who have

100: vehicle rear image display control device
101: mode setting unit
102: ignition switch
103: gear position sensor
104: object detection sensor
105: control unit
121: mode recognition unit
122: gear position recognition unit
123: object position estimation unit
124: display image determination unit
125: display image enlargement unit
126: video display control unit
106: rear camera
107: image acquisition unit
108: camera driving unit
109: display unit
110: speaker
111: alarm sound generator
112: memory

Claims (5)

As a device for displaying a rear image of a vehicle or commercial vehicle,
a gear position sensor that detects a gear state position of the vehicle and outputs gear state information;
an object detection sensor for detecting an object behind the vehicle;
an image acquisition unit for acquiring a rear image of the vehicle;
a control unit controlling a display image and enlargement of a rear image based on the gear state information and the object detection information; and
A display control device for displaying a rear image of a vehicle comprising a display unit displaying a rear image on a screen under the control of the controller.
In claim 1, the control unit,
Based on the gear state information, when the vehicle is moving forward, the rear image of the vehicle obtained by the image acquisition unit is displayed on the screen of the display unit as it is, and when the vehicle is moving backward, an image of a specific area is displayed based on object detection information and rear image information. A rear image display control device for a vehicle, characterized in that only enlarged and displayed on the screen of the display unit.
In claim 2, the specific area,
Display control of the rear image of the vehicle, characterized in that the screen area in which the location of the detected object is estimated in the entire screen area or the screen area including only certain areas on the left and right centered on the searched parking line when a parking line is searched in the rear image Device.
The mode for setting a rear image mode in which an image captured by a rear camera is displayed on the screen as it is and a rear image enlargement mode in which only an image of a specific region is enlarged and displayed on the screen from an image captured by the rear camera in claim 1 setting unit; and
A rear image display control device for a vehicle, characterized in that it further comprises an alarm sound generating unit generating an alarm sound corresponding to a differential alarm sound generation signal according to the distance to the sensing object under the control of the control unit and transmitting it through a speaker .
In claim 1, the control unit,
a gear position recognition unit recognizing a gear position using gear position information obtained from the gear position sensor;
an object position estimating unit estimating an object position based on the object detection information acquired by the object detection sensor;
a display image determination unit determining a screen area of an image to be displayed on a screen based on the gear position information and the object position information;
a display image enlargement unit enlarging an image corresponding to the screen area determined by the display image determination unit; and
and an image display control unit controlling the display of the rear image enlarged by the display image enlarger.

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