KR20100043608A - The car-system - Google Patents

The car-system Download PDF

Info

Publication number
KR20100043608A
KR20100043608A KR1020080102704A KR20080102704A KR20100043608A KR 20100043608 A KR20100043608 A KR 20100043608A KR 1020080102704 A KR1020080102704 A KR 1020080102704A KR 20080102704 A KR20080102704 A KR 20080102704A KR 20100043608 A KR20100043608 A KR 20100043608A
Authority
KR
South Korea
Prior art keywords
images
average
image quality
brightness value
improvement
Prior art date
Application number
KR1020080102704A
Other languages
Korean (ko)
Other versions
KR101552112B1 (en
Inventor
윤재호
Original Assignee
현대모비스 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대모비스 주식회사 filed Critical 현대모비스 주식회사
Priority to KR1020080102704A priority Critical patent/KR101552112B1/en
Publication of KR20100043608A publication Critical patent/KR20100043608A/en
Application granted granted Critical
Publication of KR101552112B1 publication Critical patent/KR101552112B1/en

Links

Images

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00Special procedures for taking photographs; Apparatus therefor
    • G03B15/02Illuminating scene
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B19/00Cameras
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/18Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Image Processing (AREA)
  • Image Analysis (AREA)

Abstract

PURPOSE: A vehicle system is provided to effectively process images by removing difficulties in recognition of an object due to brightness difference in a multiple camera while improving images with an image quality adjusting part. CONSTITUTION: A vehicle system includes a first and a second camera modules(10,20), an average calculation part(30), an image quality adjusting part(40), and a control part(50). The first and the second camera modules photograph a first and a second images. The average calculation part measures average intensity values in the first and the second images. The control part controls the display of the improved first and the second images.

Description

자동차 시스템{The car-system}The car system

본 발명은 자동차 시스템에 관한 것으로서, 더욱 상세하게는 스테레오 혹은 다중 카메라에서 촬영한 영상의 화질 개선이 용이한 자동차 시스템에 관한 것이다.The present invention relates to a car system, and more particularly to a car system that is easy to improve the image quality of images taken with a stereo or multiple cameras.

근래 자동차 부품 기술의 발전에 따라 레이더, 카메라, 초음파 센서 등을 이용한 다양한 형태의 자동차용 전자 부품들이 개발되고 있다. Recently, various types of electronic components for automobiles using radar, cameras, ultrasonic sensors, etc. are being developed with the development of automobile component technology.

특히, 카메라를 이용한 자동차 시스템의 경우에는 카메라를 이용한 주행 보조, 보행자 인식, 충돌 인식 등의 다양한 영상 처리 기술이 점차적으로 도입되고 있는 실정이다.In particular, in the case of an automobile system using a camera, various image processing technologies such as driving assistance, pedestrian recognition, and collision recognition using a camera are gradually introduced.

그런데, 카메라를 이용한 자동차 시스템은 외부 조명의 변화에 따라 성능이 크게 좌우된다. 특히, 자동차 주행 환경에서는 날씨, 그림자, 밤, 낮 등의 외부 빛의 밝기가 수시로 바뀌어 카메라로부터 촬영된 영상이 너무 밝거나 너무 어두워져 물체 인식에 있어 어려움이 생기게 된다.However, the performance of a car system using a camera greatly depends on the change of exterior lighting. In particular, in a car driving environment, the brightness of external light such as weather, shadow, night, day, etc. changes frequently, so that the image taken from the camera becomes too bright or too dark, which causes difficulty in object recognition.

본 발명의 목적은, 스테레오 혹은 다중 카메라에서 촬영한 영상의 화질 개선이 용이한 자동차 시스템을 제공함에 있다.An object of the present invention is to provide a vehicle system that is easy to improve the image quality of images taken with a stereo or multiple cameras.

본 발명의 자동차 시스템은, 제1, 2 영상을 각각 촬영하는 제1, 2 카메라 모듈, 상기 제1, 2 영상에서 평균 밝기 값을 산출하는 평균 산출부, 상기 평균 밝기 값과 상기 제1, 2 영상을 기초로 화질 개선 프로그램으로 밝기가 보정된 제1, 2 개선 영상을 출력하는 화질 개선부 및 상기 제1, 2 개선 영상이 디스플레이 되도록 제어하는 제어부를 포함한다.The vehicle system of the present invention includes a first and second camera module for capturing first and second images, an average calculator configured to calculate an average brightness value from the first and second images, and the average brightness value and the first and second images. And an image quality improving unit for outputting the first and second improvement images whose brightness is corrected using the image enhancement program based on the image, and a controller for controlling the first and second improvement images to be displayed.

본 발명의 자동차 시스템은, 개별 카메라에서 촬영한 영상에 대한 화질 개선 및 다중 카메라에서 밝기 차이로 인한 물체 인식의 어려움을 해소하여 효과적인 영상 처리를 할 수 있는 효과가 있다.The automobile system of the present invention has an effect of effectively processing an image by resolving the difficulty of object recognition due to an improvement in image quality of an image captured by an individual camera and a brightness difference in multiple cameras.

본 발명에 따른 자동차 시스템에 관하여 첨부된 도면을 참조하여 상세히 설명하기로 한다.A vehicle system according to the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 자동차 시스템을 나타내는 기능 블록도이고, 도 2는 본 발명에 따른 자동화 시스템의 화질 개선에 대한 평균 밝기 값에 대한 그래프이다.1 is a functional block diagram showing a vehicle system according to the present invention, Figure 2 is a graph of the average brightness value for improving the image quality of the automation system according to the present invention.

도 1 및 도 2를 참조하면, 본 자동차 시스템은 제1, 2 카메라 모듈(10, 20), 평균 산출부(30), 화질 개선부(40) 및 제어부(50)를 포함한다.1 and 2, the vehicle system includes first and second camera modules 10 and 20, an average calculator 30, an image quality improver 40, and a controller 50.

제1, 2 카메라 모듈(10, 20)은 각각 제1, 2 영상을 촬영하는 이미지 센서(12, 22) 및 제1, 2 영상을 저장하는 메모리(14, 24)를 포함한다.The first and second camera modules 10 and 20 respectively include image sensors 12 and 22 for capturing the first and second images, and memories 14 and 24 for storing the first and second images.

여기서, 제1, 2 카메라 모듈(10, 20)은 차량의 상이한 위치에 설치되며 외부 또는 내부의 제1, 2 영상을 촬영한다.Here, the first and second camera modules 10 and 20 are installed at different positions of the vehicle and photograph the first and second images of the outside or the inside.

평균 산출부(30)는 제1, 2 영상이 표시되는 픽셀의 수와 상기 픽셀의 밝기에 기초하여 평균 밝기 값(m)을 산출한다.The average calculator 30 calculates an average brightness value m based on the number of pixels in which the first and second images are displayed and the brightness of the pixels.

즉, 평균 산출부(30)는 제1, 2 영상에서 밝기 값을 보전하여 화질 개선된 영상을 얻기 위해서는 제1, 2 영상의 특징값을 정의해야 하며, 이를 위하여 평균 밝기 값(m)을 사용한다.That is, the average calculator 30 defines the feature values of the first and second images in order to preserve the brightness values in the first and second images to obtain an image having improved image quality, and uses the average brightness value m for this purpose. do.

화질 개선부(40)는 평균 밝기 값(m)과 제1, 2 영상을 기초로 화질 개선 프로그램으로 밝기가 보정된 제1, 2 개선 영상을 출력한다.The image quality improvement unit 40 outputs the first and second enhancement images whose brightness is corrected by the image quality improvement program based on the average brightness value m and the first and second images.

즉, 화질 개선부(40)는 제1, 2 영상을 소정 픽셀로 이루어진 화소 집합으로 나누고, 평균 밝기 값(m)을 이상인 제1 화소 집합군과 평균 밝기 값(m) 이하인 제2 화소 집합군으로 분리하여 제1, 2 화소 집합군의 제1, 2 평균값(m_1, m_2)을 산출한다.That is, the image quality improving unit 40 divides the first and second images into pixel sets composed of predetermined pixels, and the average brightness value m is greater than or equal to the first pixel set group and the second pixel set group is less than or equal to the average brightness value m. Are separated to calculate the first and second average values m_1 and m_2 of the first and second pixel group.

그리고, 화질 개선부(40)는 평균 밝기 값(m) 및 제1, 2 평균값(m_1, m_2)을 기초로, 상기 화질 개선 프로그램을 통하여 제1, 2 개선 영상을 산출한다.The image quality improvement unit 40 calculates first and second improvement images through the image quality improvement program based on the average brightness value m and the first and second average values m_1 and m_2.

예를 들어, 도 2를 참조하여 설명한다.For example, this will be described with reference to FIG. 2.

화질 개선부(40)는 제1, 2 영상의 빈도수에 대한 평균 밝기 값(m)을 산출 한 후, 평균 밝기 값(m) 이상인 상기 제1 화소 집합군의 제1 평균값(m_1) 및 평균 밝기 값(m) 이하인 상기 제2 화소 집합군의 제2 평균값(m_2)을 산출한다.The image quality improving unit 40 calculates an average brightness value m for the frequencies of the first and second images, and then the first average value m_1 and the average brightness of the first pixel set group that are greater than or equal to the average brightness value m. A second average value m_2 of the second pixel set group that is equal to or less than the value m is calculated.

그리고, 화질 개선부(40)는 평균 밝기 값(m) 및 제1, 2 평균값(m_1, m_2)을 기준으로 4개의 영역(제1, 2, 3, 4 영역)으로 분리한다.The image quality improvement unit 40 divides the image into four areas (first, second, third, and fourth areas) based on the average brightness value m and the first and second average values m_1 and m_2.

따라서, 화질 개선부(40)는 제1, 2 영상을 평균 밝기 값(m) 및 제1, 2 평균값(m_1, m_2)을 기준으로 4개의 영역으로 분리하고, 분리된 영역을 이용한 상기 화질 개선 프로그램에 따라 제1, 2 영상을 밝기 보존하며 화질이 개선된 제1, 2 개선 영상을 취득하게 된다.Accordingly, the image quality improving unit 40 divides the first and second images into four regions based on the average brightness values m and the first and second average values m_1 and m_2, and improves the image quality using the separated regions. According to the program, the first and second improved images are obtained by preserving the brightness of the first and second images and improving the image quality.

상기 화질 개선 프로그램은 히스토그램의 평활화(Histogram Equalization)을 이용하여 영상 명도값의 분포를 균일하게 되도록 변화시키는 것이다.The image quality improvement program is to change the distribution of image brightness values to be uniform by using histogram equalization.

제어부(50)는 제1, 2 개선 영상이 디스플레이 되도록 제어한다.The controller 50 controls the first and second improvement images to be displayed.

즉, 제어부(50)는 제1, 2 개선 영상을 외부에서 사용자가 인식할 수 있도록, 디스플레이 장치에 표시되도록 한다.That is, the controller 50 may be displayed on the display device so that the user can recognize the first and second improvement images from the outside.

본 발명의 자동차 시스템은 개별 또는 다중 카메라로 촬영된 동일한 제1, 2 영상의 상이한 밝기 값에 대한 각각의 평균 밝기 값을 산출하고, 평균 밝기 값을 이용하여 제1, 2 영상의 화질을 개선함으로써, 주위의 밝기에 무관하게 영상을 표현할 수 있는 장점이 있다.The vehicle system of the present invention calculates respective average brightness values for different brightness values of the same first and second images taken by individual or multiple cameras, and improves the image quality of the first and second images by using the average brightness values. In addition, there is an advantage that the image can be expressed regardless of the surrounding brightness.

이상 본 발명의 바람직한 실시 예에 대해 상세히 기술하였지만, 본 발명이 속하는 기술분야에 있어서 통상의 지식을 가진 사람이라면, 첨부된 청구범위에 정 의된 본 발명의 정신 및 범위에 벗어나지 않으면서 본 발명을 여러 가지로 변형 또는 변경하여 실시할 수 있음을 알 수 있을 것이다. 따라서, 본 발명의 앞으로의 실시예들의 변경은 본 발명의 기술을 벗어날 수 없을 것이다.Although preferred embodiments of the present invention have been described in detail above, those of ordinary skill in the art to which the present invention pertains may make the present invention without departing from the spirit and scope of the present invention as defined in the appended claims. It will be appreciated that various modifications or changes can be made. Accordingly, modifications of the embodiments of the present invention will not depart from the scope of the present invention.

도 1은 본 발명에 따른 자동차 시스템을 나타내는 기능 블록도이다.1 is a functional block diagram illustrating a vehicle system according to the present invention.

도 2는 본 발명에 따른 자동화 시스템의 화질 개선에 대한 평균 밝기 값에 대한 그래프이다.Figure 2 is a graph of the average brightness value for improving the image quality of the automation system according to the present invention.

Claims (5)

제1, 2 영상을 각각 촬영하는 제1, 2 카메라 모듈;First and second camera modules respectively photographing the first and second images; 상기 제1, 2 영상에서 평균 밝기 값을 산출하는 평균 산출부;An average calculator configured to calculate an average brightness value in the first and second images; 상기 평균 밝기 값과 상기 제1, 2 영상을 기초로 화질 개선 프로그램으로 밝기가 보정된 제1, 2 개선 영상을 출력하는 화질 개선부; 및An image quality improvement unit configured to output first and second improvement images of which brightness is corrected by an image quality improvement program based on the average brightness value and the first and second images; And 상기 제1, 2 개선 영상이 디스플레이 되도록 제어하는 제어부를 포함하는 자동차 시스템.And a controller for controlling the first and second improvement images to be displayed. 제 1 항에 있어서, 상기 평균 산출부는,The method of claim 1, wherein the average calculation unit, 상기 제1, 2 영상이 표시되는 픽셀의 수와 상기 픽셀의 밝기에 기초하여 상기 평균 밝기 값을 산출하는 것을 특징으로 하는 자동차 시스템.And calculating the average brightness value based on the number of pixels on which the first and second images are displayed and the brightness of the pixels. 제 1 항에 있어서, 상기 화질 개선부는,The image quality improving unit of claim 1, 상기 제1, 2 영상을 소정 픽셀로 이루어진 화소 집합을 나누고, 상기 평균 밝기 값 이상인 제1 화소 집합군과 상기 평균 밝기 값 이하인 제2 화소 집합군으로 분리하여 상기 제1, 2 화소 집합군의 제1, 2 평균값을 산출하는 것을 특징으로 하는 자동차 시스템.Dividing the first and second images into a pixel set consisting of predetermined pixels, dividing the first and second images into a first pixel set group that is greater than or equal to the average brightness value and a second pixel set group that is less than or equal to the average brightness value; A vehicle system characterized by calculating the average value of one and two. 제 3 항에 있어서, 상기 화질 개선부는,The method of claim 3, wherein the image quality improving unit, 상기 평균 밝기 값 및 상기 제1, 2 평균값을 기초로, 상기 화질 개선 프로그램에 의해 연산하여 상기 제1, 2 개선 영상을 출력하는 자동차 시스템.And output the first and second improved images by calculating the image quality improving program based on the average brightness value and the first and second average values. 제 1 항에 있어서, 상기 제어부는,The method of claim 1, wherein the control unit, 상기 제1, 2 개선 영상을 디지털 신호로 변환하여 디스플레이 되도록 제어하는 것을 특징으로 하는 자동차 시스템.And converting the first and second improvement images into a digital signal to control the display.
KR1020080102704A 2008-10-20 2008-10-20 The car-system KR101552112B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080102704A KR101552112B1 (en) 2008-10-20 2008-10-20 The car-system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080102704A KR101552112B1 (en) 2008-10-20 2008-10-20 The car-system

Publications (2)

Publication Number Publication Date
KR20100043608A true KR20100043608A (en) 2010-04-29
KR101552112B1 KR101552112B1 (en) 2015-09-10

Family

ID=42218553

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020080102704A KR101552112B1 (en) 2008-10-20 2008-10-20 The car-system

Country Status (1)

Country Link
KR (1) KR101552112B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101245247B1 (en) * 2012-08-30 2013-03-19 재단법인대구경북과학기술원 The method and device for adjusting brightness of image and multiple camera using that
WO2014035050A1 (en) * 2012-08-30 2014-03-06 재단법인대구경북과학기술원 Image brightness adjusting method, device therefor, and stereo camera

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101245247B1 (en) * 2012-08-30 2013-03-19 재단법인대구경북과학기술원 The method and device for adjusting brightness of image and multiple camera using that
WO2014035050A1 (en) * 2012-08-30 2014-03-06 재단법인대구경북과학기술원 Image brightness adjusting method, device therefor, and stereo camera
CN104285443A (en) * 2012-08-30 2015-01-14 大邱庆北科学技术院 Image brightness adjusting method, device therefor, and stereo camera
CN104285443B (en) * 2012-08-30 2016-09-07 大邱庆北科学技术院 Image brilliance control method and device, stereo camera

Also Published As

Publication number Publication date
KR101552112B1 (en) 2015-09-10

Similar Documents

Publication Publication Date Title
US9307207B2 (en) Glaring reduction for dynamic rearview mirror
US20090009604A1 (en) Image processing system and method
EP2434759B1 (en) Monitoring apparatus
US11082626B2 (en) Image processing device, imaging device, and image processing method
CN103916610B (en) Dazzle for dynamic reversing mirror is reduced
US9214034B2 (en) System, device and method for displaying a harmonized combined image
CN109493299B (en) Method for eliminating illumination influence of point light source
US10306199B2 (en) Imaging apparatus, imaging processing method, image processing device and imaging processing system
US10455159B2 (en) Imaging setting changing apparatus, imaging system, and imaging setting changing method
JP2012221103A (en) Image processing device for vehicle
US20170347008A1 (en) Method for adapting a brightness of a high-contrast image and camera system
JP2012222374A (en) On-vehicle camera system
KR20100043608A (en) The car-system
KR101822344B1 (en) Motor vehicle camera device with histogram spreading
JP5427744B2 (en) Image processing device
EP2843937B1 (en) Method for adapting a gamma curve of a camera system of a motor vehicle, camera system and motor vehicle
WO2015141860A1 (en) Image processing apparatus, imaging apparatus, image processing program, and image processing method
US11523053B2 (en) Image processing apparatus
CN110072054B (en) Terminal equipment and zooming processing method and device for image of terminal equipment
US20190149712A1 (en) Captured image display system, electronic mirror system, and captured image display method
JP5364531B2 (en) In-vehicle image recognition system
JP2014203114A (en) Object recognition device
JP7213732B2 (en) image display device
KR102339358B1 (en) Vehicular device for improving visibility in adverse weather conditions
JP2011228856A (en) On-vehicle camera system, image processing apparatus, image processing method, and program

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee