KR20050072385A - Quality automatic examination method of audio/video appliances output screen - Google Patents
Quality automatic examination method of audio/video appliances output screen Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/12—Mirror assemblies combined with other articles, e.g. clocks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R11/04—Mounting of cameras operative during drive; Arrangement of controls thereof relative to the vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/12—Mirror assemblies combined with other articles, e.g. clocks
- B60R2001/1253—Mirror assemblies combined with other articles, e.g. clocks with cameras, video cameras or video screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
- B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
- B60R2300/8066—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for monitoring rearward traffic
Abstract
본 발명은 기록매체를 통해 동영상이 녹화, 재생기능을 가진 AV(Audio Video)녹재기기의 녹화, 재생된 동영상의 영상 품질 측정방법에 관한 것으로, 기록매체에 녹화된 동영상의 품질에 대한 기준이 되는 동영상의 RGB신호를 추출하여, 경계범위를 산정하는 경계범위 산출수단과; 기록매체에 녹화된 동영상의 RGB신호를 추출하는 비교신호 산출수단과; 상기 경계범위 산출수단에서 산출된 경계범위와 비교신호 산출수단에서 산출된 신호를 서로 비교하는 신호 비교수단과; 상기 신호 비교수단에 의해 비교된 동영상의 큐얼리티(Quality)를 판정하는 판정수단;으로 구성하여, 에이브이 영상기기의 녹화, 재생된 동영상의 영상 품질을 측정하도록 구성하여, 동영상의 RF(Radio Frequency)신호를 인가 받아 이미지 캡쳐 보드(Image Caption Board)를 통해 이미지 캡쳐(Image Caption)하고, 상기 이미지의 영상 시그널인 레드, 그린, 블루로 나뉘어진 각각의 RGB신호를 추출하며, 상기 각각의 RGB신호의 최대 경계치(Upper Boundary) 및 최소 경계치(Lower Boundary)를 산출하여, 상기 산출된 RGB신호의 경계범위(Boundary)를 데이타베이스에 저장하고, 원본과 재생본의 기록매체를 산출된 RGB신호를 서로 비교하도록 함으로써, 녹화, 재생 검사 공정을 자동화 가능함은 물론, 보다 향상된 기록매체를 통해 동영상을 녹화 및 재생하는 AV녹재기기의 향상된 품질을 이끌어 낼 수가 있으며, 제조 검사 라인의 단순화, 무인화를 실현하여 제조 가공비를 절감하고 가격경쟁력에서 우위를 얻을 수 있는 장점이 있다.The present invention relates to a method of measuring the video quality of a video recording and playback of an AV (Audio Video) recording device having a video recording and playback function through a recording medium, which is a standard for the quality of a video recorded on a recording medium. Boundary range calculating means for extracting an RGB signal of a moving picture and calculating a boundary range; Comparison signal calculating means for extracting an RGB signal of a moving picture recorded on a recording medium; Signal comparing means for comparing the boundary range calculated by the boundary range calculating means with the signal calculated by the comparison signal calculating means; Judging means for judging the quality of the video compared by the signal comparing means; configured to measure the video quality of the video recording and playback of the video device, and the RF (Radio Frequency) of the video. Image caption is received through the image caption board, and the respective RGB signals divided into red, green, and blue, which are image signals of the image, are extracted. The upper boundary and the lower boundary are calculated, the calculated boundary of the RGB signal is stored in the database, and the calculated RGB signals of the recording medium of the original and the reproduction are stored. By comparing each other, the recording and playback inspection process can be automated, and the quality of the AV recording device that records and plays back videos through the improved recording media can be improved. In addition, the manufacturing inspection line can be simplified and unmanned, thereby reducing manufacturing process costs and gaining an advantage in price competitiveness.
Description
본 발명은 VCR(video cassette recorder)의 테잎이나 DVD(digital versatile disk)와 같은 기록매체를 통해 동영상이 녹화, 재생기능을 가진 AV(Audio Video)녹재기기의 녹화, 재생된 동영상의 영상 품질 측정방법에 관한 것으로, 더욱 상세하게는 이미지캡쳐보드(Image caption board)를 통해 캡쳐된 이미지의 레드(R), 그린(G), 블루(B) 각각의 신호의 레벨(Amplitude)값을 산출하여, 상기 이미지의 허용 최대 경계치(Upper boundary)와 최소 경계치(Lower Boundary)로 이루어지 경계범위를 산정하여, 녹재된 동영상의 영상의 질(Quality)을 자동 측정 검사할 수 있는 것이다.The present invention provides a method for measuring the video quality of a recorded video of an AV (Audio Video) recording device having a function of recording and playing a video through a tape of a video cassette recorder (VCR) or a digital versatile disk (DVD). In more detail, the level (Amplitude) of each signal of the red (R), green (G), blue (B) of the image captured by the image capture board (Image caption board) is calculated, By calculating the boundary range consisting of the allowable maximum boundary and the lower boundary of the image, the quality of the image of the recorded video can be automatically measured and inspected.
종래에는 생상라인에서, 조립된 기록매체를 통해 동영상이 녹화, 재생기능을 가진 AV(Audio Video)녹재기기의 기능을 시험하기 위해 특정한 영상신호를 주어 일일이 검사자의 시각에 의존하여 검사를 하거나, 또는 오실로스코프에 의한 검사를 많이 이루어졌으나, 상기 오실로스코프에는 입력되는 영상신호 중에서 특정한 영상신호만을 검출하는 기능이 없으므로, 특정한 영상신호만을 측정하는 것은 불가능 하였다.Conventionally, in a production line, a video is examined through an assembled recording medium to test a function of an AV (Audio Video) recording apparatus having a recording and playback function, and inspects it depending on the time of the inspector. Although many oscilloscope tests have been performed, the oscilloscope has no function of detecting only a specific video signal among input video signals, and thus it is impossible to measure only a specific video signal.
또한 영상신호를 계측할 수 있는 아날로그 모니터,벡터 스코프 및 웨이브폼 모니터등을 연결하여, 계측자가 각각의 계측기를 보면서 계측하는데, 이때 계측기의 표현 자체가 아날로그 방식으로 되디 때문에 계측자의 주관적 판단과 계측각도에 따라 오차가 발생할 수 있고, 게측기들이 별도로 구비됨으로써 설치장소에 제약을 받게 되며, 설비가 높아지게 되는 문제점들이 있었다.In addition, by connecting analog monitor, vector scope, and waveform monitor that can measure the video signal, the instrument measures by looking at each instrument.In this case, the expression of the instrument itself is analogue, so the subjective judgment and measurement angle of the instrument are measured. According to the error may occur, there is a problem that the restraint is provided by a separate installation is restricted in the installation place, the equipment becomes high.
본 발명은 상기와 같은 여러 가지 문제점을 고려하여 이루어진 것으로, 그 목적은 기존의 작업자들의 시각에 전적으로 의존하여 판단하던 녹화 재생 검사 공정을 자동화함으로써 보다 향상된 제품 품질을 이끌어 낼 수가 있으며, 제조 검사 라인의 단순화, 무인화를 실현하여 제조 가공비를 절감하고 가격경쟁력에서 우위를 얻을 수 있는 기록매체를 통해 AV(Audio Video)녹재기기의 녹화된 동영상의 영상 품질 측정방법을 제공함에 있다.The present invention has been made in consideration of various problems as described above, and its object is to automate the recording and reproducing inspection process, which is determined solely on the perspective of the existing workers, and thus can lead to improved product quality. The present invention provides a method of measuring video quality of recorded video of an AV (Audio Video) recording device through a recording medium that can simplify manufacturing and unmanned operation, thereby reducing manufacturing process costs and gaining an advantage in price competitiveness.
상기와 같은 목적을 달성하기 위하여 본 발명은 기록매체를 통해 동영상이 녹화, 재생이 가능한 영상기기에 녹화, 재생된 동영상의 영상 품질 측정에 있어서,In order to achieve the above object, the present invention provides a method for measuring the video quality of a video recorded and played on a video device capable of recording and playing back a video through a recording medium,
기록매체에 녹화된 동영상의 품질에 대한 기준이 되는 동영상의 RGB신호를 추출하여, 경계범위를 산정하는 경계범위 산출수단과;Boundary range calculation means for extracting an RGB signal of a moving picture which is a reference for the quality of a moving picture recorded on a recording medium, and calculating a boundary range;
기록매체에 녹화된 동영상의 RGB신호를 추출하는 비교신호 산출수단과;Comparison signal calculating means for extracting an RGB signal of a moving picture recorded on a recording medium;
상기 경계범위 산출수단에서 산출된 경계범위와 비교신호 산출수단에서 산출된 신호를 서로 비교하는 신호 비교수단과;Signal comparing means for comparing the boundary range calculated by the boundary range calculating means with the signal calculated by the comparison signal calculating means;
상기 신호 비교수단에 의해 비교된 동영상의 큐얼리티(Quality)를 판정하는 판정수단;으로 구성하여, 에이브이 영상기기의 녹화, 재생된 동영상의 영상 품질을 측정하도록 구성한다.And judging means for judging the quality of the video compared by the signal comparison means, so that AV measures the video quality of the recorded and reproduced video of the video device.
이하에서 본 발명의 바람직한 실시예를 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.
첨부된 도면 도 1은 본 발명의 기록매체를 통해 AV(Audio Video)녹재기기의 녹화된 동영상의 영상 품질 측정 방법에 따른 순서도로서, 본 발명은 RGB 신호의 레벨(Amplitude) 값을 분리하는 검출부와, 원본 R/F의 RGB 최고경계치(Upper boundary)와 최저경계치(Lower boundary)를 산정하는 경계치 산출부와, 상기 산정된 경계치(boundary)를 기준으로 연상 신호를 분석하여 품질을 측정하는 측정부로 구성한다.1 is a flowchart illustrating a method of measuring image quality of a recorded video of an AV (Audio Video) recording apparatus through a recording medium of the present invention. The present invention provides a detection unit for separating an amplitude value of an RGB signal. And a boundary value calculation unit for calculating the RGB upper and lower boundaries of the original R / F, and analyzing the associative signals based on the calculated boundary values to measure quality. It consists of a measuring part.
상기 검출부는 A/V시스템의 특정한 패턴의 영상신호를 통해 일정 시간동안 영상 신호를 녹화하고, 이를 재생시키면서 출력되는 영상신호를 이미지 캡쳐 보드(Image Caption Board)를 통해 RGB 신호의 레벨(Amplitude) 값들을 각각 분리한다.The detector records an image signal for a predetermined time through an image signal of a specific pattern of the A / V system, and outputs the image signal output while reproducing it through an image caption board. Separate each one.
또한, 이미지 캡쳐 보드(Image Caption Board)를 통해 RGB 신호의 레벨(Amplitude) 값들을 분리한다.In addition, the level values of the RGB signals are separated through an image caption board.
상기 산출부는 원본의 RGB 신호를 통해 경계치(Boundary)를 최고경계치(Upper boundary)와 최저경계치(Lower boundary)를 산정하게 된다.The calculator calculates an upper boundary and a lower boundary from the original RGB signal.
이때, 원본의 경계치 기준이되며, 데이터베이스에 저장되고, 데이터베이스에서는 저장된 원본 경계치는 후술하는 녹재된 테이프에서 출력되는 영상 신호를 분석하기 전에 로드하게 된다.At this time, the threshold value of the original, which is stored in the database, the database stored in the database is loaded before analyzing the image signal output from the recorded tape to be described later.
상기 측정부는 산정된 경계치(boundary)를 기준으로 A/V 기기에 특정 패턴이 녹재된 테이프에서 출력되는 영상 신호를 분석하여 품질을 측정하게 된다.The measurement unit analyzes an image signal output from a tape in which a specific pattern is recorded on the A / V device based on the calculated boundary to measure the quality.
상기 RGB 신호의 레벨값들은 첨부된 도면 도 2와 같이 각각 R(Red), G(Green), B(Blue) 신호의 최상위에 최고경계치가 나타내고, 최하위에 최저경계치 가 나타나게 된다.As shown in FIG. 2, the level values of the RGB signals are indicated by the highest boundary value at the top of the R (Red), G (Green), and B (Blue) signals, respectively, and the lowest boundary value at the bottom.
그리고, 재생되는 RGB 신호는 최고경계치와 최저경계치 사이로 출력되게 된다. 이때, 상기 RGB 신호가 최고경계치와 최저경계치 사이에 출력되면 정상상태이고, 최고경계치와 최저경계치 사이를 벗어나면서 출력되면 불량상태가 된다.The reproduced RGB signal is output between the highest boundary value and the lowest boundary value. At this time, when the RGB signal is output between the highest boundary value and the lowest boundary value, it is in a normal state.
또한, 상기 원본의 RGB 신호를 토대로 산정된 최대경계치와 최소경계치를 재생 출력 RGB 신호와 비교하여 어떠한 위치에서 어느 정도 오차가 발생하였는지를 첨부된 도면 도 3a 내지 3b와 같이 비교, 분석하여 최종적으로 재생 화면의 품질을 검사할 수 있다.In addition, the maximum boundary value and the minimum boundary value calculated based on the RGB signal of the original are compared with the reproduction output RGB signal, and how much error occurs at what position as shown in FIGS. 3A to 3B. You can check the quality of the screen.
또한, 상기 경계치 산출부는 최고경계치와 최저경계치를 비교하여 배드 포인트(Bad Point)를 검출하게 되며, 배드 포인트(Bad Point)의 분포율과 평균에러율을 산출하여 화면 전체의 품질을 수치화하도록 구성한다.In addition, the boundary value calculation unit detects a bad point by comparing the highest boundary value with the lowest boundary value, and calculates the distribution rate and the average error rate of the bad point to quantify the quality of the entire screen. .
또, 이미지의 라인별 RGB 신호 레벨의 위상변화에 따른 미분과 Spline Fitting를 이용하여 최고경계치와 최저경계치를 산정하여 사용할 수 있다.In addition, by using the derivative and the spline fitting according to the phase change of the RGB signal level for each line of the image, the maximum boundary value and the minimum boundary value can be calculated and used.
또한, 상기 배드 포인트의 분포율과 평균에러율 및 품질수치를 이용하여 A/V 재생시스템의 Play상태, Still상태, Reverse Search상태, Forward Search상태에서 화면 품질을 검사할 수 있는 것이다.In addition, the screen quality can be inspected in the play state, still state, reverse search state, and forward search state of the A / V playback system using the distribution rate, the average error rate, and the quality value of the bad point.
이상에서 상술한 바와 같이 본 발명은 기록매체를 통해 동영상이 녹화, 재생기능을 가진 AV(Audio Video)녹재기기의 녹화, 재생된 동영상의 영상 품질 측정방법에 관한 것으로, 동영상의 RF(Radio Frequency)신호를 인가 받아 이미지 캡쳐 보드(Image Caption Board)를 통해 이미지 캡쳐(Image Caption)하고, 상기 이미지의 영상 시그널인 레드, 그린, 블루로 나뉘어진 각각의 RGB신호를 추출하며, 상기 각각의 RGB신호의 최대 경계치(Upper Boundary) 및 최소 경계치(Lower Boundary)를 산출하여, 상기 산출된 RGB신호의 경계범위(Boundary)를 데이타베이스에 저장하고, 원본과 재생본의 기록매체를 산출된 RGB신호를 서로 비교하도록 함으로써, 녹화, 재생 검사 공정을 자동화 가능함은 물론, 보다 향상된 기록매체를 통해 동영상을 녹화 및 재생하는 AV녹재기기의 향상된 품질을 이끌어 낼 수가 있으며, 제조 검사 라인의 단순화, 무인화를 실현하여 제조 가공비를 절감하고 가격경쟁력에서 우위를 얻을 수 있는 장점이 있다.As described above, the present invention relates to a method of measuring video quality of a video recorded and played back of an AV (Audio Video) recording apparatus having a video recording and playback function through a recording medium. Image caption is received through the image caption board, and the respective RGB signals divided into red, green, and blue, which are image signals of the image, are extracted. The upper boundary and the lower boundary are calculated, the calculated boundary of the RGB signal is stored in the database, and the calculated RGB signals of the recording medium of the original and the reproduction are stored. By comparing each other, it is possible to automate the recording and playback inspection process, as well as to improve the quality of the AV recording equipment that records and plays back videos through the improved recording media. In addition, the manufacturing inspection line can be simplified and unattended to reduce manufacturing process costs and gain an advantage in price competitiveness.
도 1은 본 발명의 기록매체를 통해 AV(Audio Video)녹재기기의 녹화된 동영상의 영상 품질 측정 방법에 따른 순서도. 1 is a flow chart according to a method for measuring video quality of a recorded video of an AV (Audio Video) recording apparatus through a recording medium of the present invention.
도 2는 본 발명의 RGB 신호 분석을 나타낸 예시도.2 is an exemplary view showing RGB signal analysis of the present invention.
도 3a~3b은 본 발명의 특정패턴의 노이즈발생 화면을 나타내는 예시도.3A to 3B are exemplary views showing a noise generation screen of a specific pattern of the present invention.
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