KR20180106481A - Apparatus for providing line information in vehicle - Google Patents

Abstract

The lane information providing apparatus in a vehicle according to the present invention includes a headlight unit attached to left and right sides of the vehicle, a memory in which a program for providing lane information is stored, and a processor for executing a program stored in the memory, Subtracts one or more specific colors of the basic colors of the light source included in the headlight unit and outputs a display image corresponding to predetermined display information of the color subtracted from the specific color.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a lane-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lane information providing apparatus in a vehicle, and more particularly, to a lane information providing apparatus for displaying separate display information on a road besides headlights using a headlight device of a vehicle.

Recently, a lane keeping assist system (LKAS) has been widely used as a vehicle safety system to help a vehicle not to depart from a lane in which a vehicle is running.

On the other hand, in the case of the related art, the lane width is indicated on the road by using a separate light source (for example, a laser beam lamp) from the headlight to prevent lane departure.

However, since the fixed pattern image is displayed on the road through a separate light source, there is a problem that the process of alignment and the like is complicated and the amount of display information is limited when a separate light source is installed.

Another conventional technique is to mount a camera in front of the vehicle to detect the position of the vehicle and to prevent a departure of the lane through an alarm in advance.

This method has a limitation that the lane departure prevention system operates at a specific speed or more, and the recognition rate is considerably low, which is affected by external influences such as weather and illumination.

In this regard, Korean Patent Laid-Open Publication No. 10-2012-0135697 (entitled " Vehicle lane departure warning and lane keeping support system and control method thereof ") discloses a driving characteristic ) To determine the center lane.

An embodiment of the present invention provides a lane information providing apparatus for displaying separate display information in addition to a headlight on a road using a headlight apparatus to which an image display apparatus such as an active LED matrix, laser scanning, and DMD is applied.

It should be understood, however, that the technical scope of the present invention is not limited to the above-described technical problems, and other technical problems may exist.

According to an aspect of the present invention, there is provided an apparatus for providing lane information in a vehicle, comprising: a headlight unit attached to left and right sides of the vehicle; a memory for storing a program for providing lane information; And a processor for executing the program stored in the memory. At this time, as the program is executed, the processor subtracts one or more specific colors of the basic colors of the light source included in the headlight unit, and displays a display image corresponding to predetermined display information in the subtracted specific color Output.

The processor compares the current speed of the vehicle with the speed information stored in the memory, and outputs a display image in which the display information corresponding to the comparison result is associated.

The processor outputs a display image including the safety distance warning image of the vehicle corresponding to the speed of the vehicle and outputs the display image by adjusting the danger area of the safety distance warning image corresponding to the speed .

The processor may adjust the projection area and the lane width information corresponding to the speed of the vehicle and output the display image.

The processor compares the steering angle and the road curvature of the vehicle with the information stored in the memory and adjusts the projection area and the lane width information corresponding to the speed, the steering angle and the road curvature of the vehicle based on the comparison result, Can be output.

Further comprising a front camera for photographing a forward image of the vehicle, wherein the processor compares the adjusted lane width information with a lane included in the forward image, and determines whether or not the vehicle leaves the lane on the basis of the comparison result .

The processor calculates a difference between the lane width information of each of the primary colors projected through the respective light sources of the headlights included in the left and right sides of the vehicle at the intersection positions obtained according to the result of the comparison between the lane width information and the lane included in the forward image It is possible to determine whether or not the vehicle has departed from the lane on the basis of whether or not a difference occurs.

The processor may correct the brightness of the light source so that the difference between the basic colors at the intersections is within a predetermined range when the differences of the basic colors at the intersections occur.

The headlight unit may include a light source of red, green, and blue, and the processor may output the display image by subtracting one or more light sources corresponding to one or more specific colors of the red, green, and blue light sources.

The light sources of the red, green, and blue LEDs are composed of LED light sources. Light emitted from the LED light sources passes through a relay lens, is reflected by a DMD (Digital Micromirror Device) through a mirror, Can be emitted to the lens of the headlamp.

The red, green, and blue light sources are composed of a laser light source, and each laser light irradiated by each of the laser light sources is reflected by a two-dimensional MEMS scanner through a mirror. After the distortion correction algorithm of the MEMS scanner is performed The brightness and timing of the laser light are corrected, and the corrected laser light can be emitted through the micro mirror of the MEMS scanner while adjusting the reflection direction thereof.

Wherein the headlight portion includes a color wheel including red, green, and blue regions, the light source is a white light source, and wherein the processor subtracts one or more of the red, green, and blue regions of the color wheel The image can be output.

According to any one of the above-mentioned means for solving the problems of the present invention, it is possible to induce safe driving of the driver by providing display information such as the vehicle width and the safety distance in addition to the front headlight.

In addition, since the brightness of the left and right headlights is compensated, a high forward view visibility can be obtained, and the lane width is displayed on the road surface in a state of having a high forward view visibility.

Further, there is an advantage that it is not necessary to provide a separate additional light source, thereby reducing weight and cost.

1 is a block diagram of a lane information providing apparatus according to an embodiment of the present invention.
2 is a diagram showing an example of outputting a display image according to the speed of the vehicle.
3 is a diagram illustrating an example of outputting a display image by adjusting projection area and lane width information according to the speed of the vehicle.
FIG. 4 is a view for explaining contents for determining whether or not a lane departure has been made using a front camera.
5 is a diagram for explaining contents of correcting the lane width information.
6A to 6C are views for explaining the configuration of the headlight unit.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly explain the present invention in the drawings, parts not related to the description are omitted.

Whenever a component is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements, not the exclusion of any other element, unless the context clearly dictates otherwise.

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

1 is a block diagram of an apparatus 100 for providing lane information according to an embodiment of the present invention.

The lane information providing apparatus 100 according to an embodiment of the present invention includes a headlight unit 110, a memory 120, and a processor 130. [

The headlight unit 110 is attached to the left and right sides of the vehicle respectively. The left and right headlight units 110 include an optical system 111, a panel driver 113, and a light source driver 115, respectively.

The optical system 111 includes at least one light source and is driven under the control of the panel driver 113 and the light source driver 115. [

The memory 120 stores a program for providing lane information. At this time, the memory 120 is collectively referred to as a non-volatile storage device and a volatile storage device which keep the stored information even when power is not supplied.

For example, the memory 120 may be a compact flash (CF) card, a secure digital (SD) card, a memory stick, a solid-state drive (SSD) A magnetic computer storage device such as a NAND flash memory, a hard disk drive (HDD) and the like, and an optical disc drive such as a CD-ROM, a DVD-ROM, etc. .

The processor 130 executes the program stored in the memory 120. [ The processor 130 may include a controller 131 for controlling the light source driver 115 and a graphic controller 133 for controlling the panel driver 113. The processor 130 may be formed as an independent structure, The present invention is not limited thereto.

Specifically, the processor 130 subtracts one or more specific colors of the basic colors of the light source included in the headlight unit 110, and displays predetermined display information (for example, lane width, vehicle safety Distance) corresponding to the display image.

For example, headlights are typically white light, so the default color is white. At this time, the basic color, white, is formed by combining a plurality of lights, and a plurality of lights may correspond to red, blue, and green.

When the processor 130 subtracts the blue light, the illuminated light becomes yellow, and the safety distance can be corresponded to the display information predetermined in yellow, and output to the display image.

As described above, according to the embodiment of the present invention, the lane information providing apparatus 100 can provide display information to a driver by subtracting a specific color from an existing light source without using an additional light source.

Hereinafter, an example in which the display image is outputted according to the information of the speed, the steering angle, and the road curvature will be described with reference to FIGS. 2 to 5.

2 is a diagram showing an example of outputting a display image according to the speed of the vehicle. 3 is a diagram illustrating an example of outputting a display image by adjusting projection area and lane width information according to the speed of the vehicle. FIG. 4 is a view for explaining how to determine whether or not a lane departure has been made using the front camera 140. FIG. 5 is a diagram for explaining contents of correcting the lane width information.

The processor 130 may compare the current speed of the vehicle with the speed information stored in the memory 120 and output a display image corresponding to the display information corresponding to the comparison result.

At this time, the processor 130 can output the display image including the safety distance warning image of the vehicle corresponding to the speed of the vehicle, and adjust the dangerous area of the safety distance warning image corresponding to the speed to output the display image have.

For example, when the speed of the vehicle is low as shown in FIG. 2A, the danger zone w1 of the safety distance warning image P1 is displayed relatively narrowly. At this time, the safe distance warning image may display the appropriate distance guide line and the warning distance guide line together with the forward vehicle, and the dangerous area w1 is the area between the appropriate distance guide line and the warning distance guide line.

On the other hand, if the speed of the vehicle is high as shown in FIG. 2 (b), the dangerous area w1 'of the safety distance warning image P1' is relatively wider than that of the low speed region. That is, as the distance between the appropriate distance guide line and the warning distance guide line is increased, the dangerous area w1 'is also displayed so as to be widened.

Also, the processor 130 may adjust the projection area and the lane width information corresponding to the speed of the vehicle and output the display image as shown in FIG.

For example, when the speed of the vehicle is low as shown in FIG. 3A, the projection area is formed so as to be close to the driver, and the lane width is narrowed to be output to the display image P2. On the other hand, when the vehicle speed is high, the projection area is formed to be far from the driver in comparison with the low speed, and the lane width is formed to be wide and output as the display image P2 '.

In addition, the processor 130 obtains the steering angle and the road curvature information of the vehicle and compares the information with the information stored in the memory 120, and calculates a projection area corresponding to the vehicle speed, a steering angle and a road curvature, Information can be adjusted and output as a display image.

That is, as shown in FIG. 3A, not only the straight road but also the curved road as shown in FIG. 3B, the steering angle information and the road curvature information are obtained to output the display image in the shape of a curve according to the road curvature In the case of a display image output in the form of a curve, the projection area and the lane width information may be adjusted and reflected as in the case of FIG. 3 (a).

Meanwhile, the lane information providing apparatus 100 according to an embodiment of the present invention may further include a front camera 140 for photographing a forward image of the vehicle. At this time, the front camera 140 may be a vision camera, but is not limited thereto.

When the front camera 140 captures a forward image of the vehicle and transmits the captured image to the processor 130, the processor 130 compares the forward image with the display image output through the headlight unit 110. That is, the processor 130 compares the adjusted lane width information displayed on the display image with the lane included in the forward image, and determines whether or not the vehicle has departed from the lane based on the comparison result.

At this time, the processor 130 compares the lane width information P4 and P4 'of the display image with the lane L included in the forward image, the lane width information P4 and P4' It is possible to determine that the lane L has departed from the intersection (P5).

Specifically, the light projected through the left and right headlights becomes brighter at the intersecting position P5 with respect to the lane. As a result, the intersection position P4 of the lane width information P4 and P4 ' (P4 ').

Accordingly, the processor 130 determines whether or not the light source of the headlight unit 110 included in the left and right sides of the vehicle at the intersection positions obtained according to the result of the comparison between the lane width information and the lane included in the forward image It is possible to judge whether or not the vehicle leaves the lane on the basis of whether or not a difference in projected color occurs.

On the other hand, since the light projected through the left and right headlights becomes brighter at the intersecting position P5, in this case, between the lane width information P6 and P6 'displayed at the left and right positions as shown in Fig. 5 (a) They do not match each other and provide distorted information to the driver.

In order to prevent this, the processor 130 may use an image captured by the front camera 140. Specifically, when a difference in color occurs at an intersection, the processor 130 calculates a color difference The brightness of the light source is corrected so that the brightness of the light source is within a certain range.

Accordingly, the processor 130 corrects the mismatching lane width information as shown in (a) of Fig. 5 so as to be matched as shown in Fig. 5 (b), and outputs the display image.

Hereinafter, the headlight unit 110 according to the embodiment of the present invention will be described in detail with reference to FIGS. 6A to 6C.

6A to 6C are views for explaining the configuration of the headlight unit 110. Fig.

Referring to FIG. 6A, the light source of the headlight unit 110 may include red, green, and blue LED light sources 611, and three LED light sources 611, Light can be formed.

The light emitted by each LED light source 611 passes through a dichroic filter 612 and a relay lens 613 that transmit light according to wavelengths and passes through a mirror 614 to a digital micromirror Device 615, and then emitted to the lens 616 of the headlamp as the direction of reflection is adjusted by the DMD 615.

Accordingly, the processor 130 can output the above-described display image to the lens 616 of the head lamp by subtracting any one of the red, green, and blue LED light sources 611. [

Next, referring to FIG. 6B, the light source of the headlight unit 110 may include a red, green, and blue laser light source 621. In this case, the respective laser beams irradiated by the respective laser light sources 621 pass through the dichroic filter 612 and are transmitted to the mirror 623, and reflected by the two-dimensional MEMS scanner 624 through the mirror 623 do.

As the distortion correction algorithm is performed in the MEMS scanner 624, the brightness and timing of the laser light are corrected, and the corrected laser light can be output through the micro mirror of the MEMS scanner 624 with its reflection direction adjusted. In the embodiment of FIG. 6B, since the laser light source 621 and the MEMS scanner 624 are used, it is not necessary to provide the lens 616 of the head lamp, which is a projection lens, as shown in FIG. 6A.

Referring to FIG. 6C, the light source of the headlight unit 110 may include a white LED light source 631, unlike FIGS. 6A and 6B, and may include a color wheel including white, red, green, 634 < / RTI >

The light irradiated by the white LED light source 631 is transmitted to the mirror 635 via the collimator 632, the relay lens 633 and the lac color wheel 634 and reflected by the DMD 636 through the mirror 635 do. Accordingly, as the reflection direction is adjusted by the DMD 636 as shown in FIG. 6A, the light can be emitted to the lens 637 of the headlamp.

At this time, the processor 130 may output display information such as lane width information to the display image by subtracting at least one of the red, green, and blue regions of the color wheel 634.

 1 may be implemented in hardware such as software or an FPGA (Field Programmable Gate Array) or ASIC (Application Specific Integrated Circuit), and may perform predetermined roles can do.

However, 'components' are not meant to be limited to software or hardware, and each component may be configured to reside on an addressable storage medium and configured to play one or more processors.

Thus, by way of example, an element may comprise components such as software components, object-oriented software components, class components and task components, processes, functions, attributes, procedures, Routines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables.

The components and functions provided within those components may be combined into a smaller number of components or further separated into additional components.

According to any one of the embodiments of the present invention, it is possible to induce safe driving of a driver by providing display information such as a vehicle width and a safety distance in addition to a front headlight.

In addition, since the brightness of the left and right headlights is compensated for, it is possible to have a high forward view security ratio and to display the lane width on the road surface in a state of having a high forward view security ratio, thereby increasing the recognition rate of the front camera 140 .

In addition, there is no need to install an additional light source as in the existing system, and there is no need for an AVN panel and a HUD optical system, which makes it possible to reduce the weight and cost of the vehicle.

On the other hand, an embodiment of the present invention may also be embodied in the form of a computer program stored in a medium executed by a computer or a recording medium including instructions executable by the computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, the computer-readable medium may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes any information delivery media, including computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transport mechanism.

While the methods and systems of the present invention have been described in connection with specific embodiments, some or all of those elements or operations may be implemented using a computer system having a general purpose hardware architecture.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

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.

100: lane information providing device
110: headlight part
120: Memory
130: Processor
140: Front camera

Claims (12)

A lane information providing apparatus in a vehicle,
A headlight unit attached to left and right sides of the vehicle,
A memory for storing a program for providing lane information,
And a processor for executing a program stored in the memory,
Wherein the processor executes the program to subtract one or more specific colors of the light source included in the headlight unit and output a display image corresponding to predetermined display information corresponding to the subtracted specific color Lane information providing device. The method according to claim 1,
Wherein the processor compares the current speed of the vehicle with the speed information stored in the memory and outputs a display image in which the display information corresponding to the comparison result is associated. 3. The method of claim 2,
Wherein the processor outputs a display image including a safety distance warning image of the vehicle corresponding to the speed of the vehicle and adjusts a dangerous area of the safety distance warning image corresponding to the speed to output the display image, Lane information providing device. 3. The method of claim 2,
Wherein the processor adjusts the projection area and the lane width information corresponding to the speed of the vehicle and outputs the lane width information to the display image. 5. The method of claim 4,
The processor compares the steering angle and the road curvature of the vehicle with the information stored in the memory and adjusts the projection area and the lane width information corresponding to the speed, the steering angle and the road curvature of the vehicle based on the comparison result, And outputs the lane information. 5. The method of claim 4,
Further comprising a front camera for photographing a forward image of the vehicle,
Wherein the processor compares the adjusted lane width information with a lane included in the forward image and determines whether the vehicle is departing from the lane based on the comparison result. The method according to claim 6,
The processor calculates a difference in color projected through each light source of the headlights included in the left and right sides of the vehicle at an intersection position obtained according to a result of comparison between the lane width information and the lane included in the forward image Wherein the lane departure determination unit determines whether or not the vehicle departs from the lane based on whether or not the lane departure occurs. 8. The method of claim 7,
Wherein the processor corrects and outputs the brightness of the light source so that the difference in color at the intersection position is within a certain range when the color difference occurs at the intersection position. The method according to claim 1,
Wherein the headlight section includes red, green, and blue light sources,
Wherein the processor outputs the display image by subtracting one or more light sources corresponding to one or more specific colors of the red, green, and blue light sources. 10. The method of claim 9,
Wherein the red, green, and blue light sources are comprised of LED light sources,
The light emitted by each LED light source passes through a relay lens, is reflected by a DMD (Digital Micromirror Device) through a mirror, and then emitted to a lens of a headlamp as the reflection direction is adjusted by the DMD. . 10. The method of claim 9,
Wherein the red, green, and blue light sources are composed of laser light sources,
The brightness and timing of the laser light are corrected as the distortion correction algorithm of the MEMS scanner is performed after each laser light irradiated by each laser light source is reflected by a two-dimensional MEMS scanner through a mirror, And the reflection direction of the reflected light is adjusted and outputted through the fine mirror of the MEMS scanner. The method according to claim 1,
The headlight portion including a color wheel including white, red, green and blue regions, the light source being a white light source,
Wherein the processor outputs the display image by subtracting at least one of the red, green and blue regions of the color wheel.

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