CN101742360A - Display equipment capable of identifying standard color bar signals and identification method used by same - Google Patents
Display equipment capable of identifying standard color bar signals and identification method used by same Download PDFInfo
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Abstract
The invention discloses display equipment capable of identifying standard color bar signals and identification method used by the same. A video image captured by an image processing chip is stored by using a high-speed random-access memory. The invention is characterized in that the display equipment has a standard color bar signal database, wherein eight colors of color bars are respectively defined in the standard color bar signal database and corresponded to relative positions in the video image, and corresponding signal values of red, green and blue components or Y, U and V components of the relative positions in the video image are also defined; the method comprises the following steps of: respectively reading the values of the red, green and blue components or the Y, U and V components at the relative positions in the video image in the high-sped random-access memory and comparing the values with values of corresponding components in the standard color bar signal database one by one; if the values are the same, judging that signals displayed on the display equipment are standard color bar signals; and if the values are not the same, judging that the displayed signals are non standard color bar signals. The invention can conveniently prompt the kind of the color bar signals to users.
Description
Technical field the present invention relates to a kind of display device of energy criterion of identification color bar signal and the recognition methods of use thereof.
The background technology standard color-bar signal has multiple, for example: 100/0/75/0 colour bar (100% saturation, 75% amplitude), 100/0/100/0 colour bar (100% saturation, 75% amplitude), 100/0/100/25 (is 95% saturation and 100 amplitudes when Y=2.2, it when Y=2.8 98% saturation, 100% amplitude) etc., China's television standard is defined in the transmission of TV signal, unified 100/0/75/0 color bar signal of using in transmission and the magnetic tape recording.Therefore, the making of TV signal and sender, the side of recording of tape is exactly a necessary process to detection, the identification of this color bar signal.The present invention utilizes display device (such as the monitor of TV station through broadcasting and TV field commonly used) to realize the detection and Identification to these color bar signals exactly.The present invention is mainly used in vision signal monitoring, and fields such as control are such as TV station etc.
Summary of the invention the objective of the invention is to disclose a kind of display device of energy criterion of identification color bar signal and the recognition methods of use thereof.
The invention discloses a kind of display device of energy criterion of identification color bar signal, use high speed random asccess memory memory image process chip video captured image, has the standard color-bar signal database, defined the relative position of colour bar correspondence in described video image of eight kinds of colors in the described standard color-bar signal database respectively, and the signal value of corresponding red, green, blue component or Y, U, V component on the relative position in described video image; Read in the value of red, green, blue component corresponding on the relative position in the described video image in the described high speed random asccess memory or Y, U, V component respectively, and with described standard color-bar signal database in the respectively contrast one by one of value of respective components, identical then judge show on the described display device for standard color-bar signal, inequalityly then be judged as non-standard color bar signal.
The invention also discloses a kind of recognition methods of display device use of energy criterion of identification color bar signal, use high speed random asccess memory memory image process chip video captured image, the first step, set up the standard color-bar signal database, defined the relative position of colour bar correspondence in described video image of eight kinds of colors in the described standard color-bar signal database respectively, and the signal value of corresponding red, green, blue component or Y, U, V component on the position in described video image; Second step, read position correspondence in the described video image described red, green, blue component in described high speed random asccess memory or the value of Y, U, V component respectively, and with described standard color-bar signal database in the value of respective components contrast one by one, identical then is standard color-bar signal, and inequality then is non-standard color bar signal.
Above-mentioned can criterion of identification in the recognition methods of the display device of color bar signal and use thereof, also have following subordinate technical characterictic:
Defined the span of the signal value of the red, green, blue component of color bar signal correspondence of described eight kinds of colors or Y, U, V component in the described standard color-bar signal database respectively, the color bar signal that signal value all drops in the described span is judged as standard color-bar signal.
The data that comprise more than one standard color-bar signal in the described standard color-bar signal database; The color bar signal that shows on the described display device respectively with described more than one standard color-bar signal contrast, whole non-standard color bar signals that just are judged as inequality.
The present invention can point out the kind of user's color bar signal easily, and realizing simply need not increase any hardware cost, basically as long as the display device of band DDR can be realized this function.In the broadcasting and TV field, good prospects for application is arranged.
Description of drawings
Fig. 1 is a flow chart of setting up the standard color-bar signal database.
Fig. 2 is the flow chart of criterion of identification color bar signal.
Embodiment is described in further details the present invention below in conjunction with the drawings and specific embodiments.
Along with the development of memory technology, existing display device all has the DDR memory.The DDR memory is the abbreviation of DDR SDRAM, is the abbreviation of Double Data Rate SDRAM, is the meaning of high speed random asccess memory.Though be that DDR is most widely used general at present, the present invention does not limit display device must use DDR, we directly are called the high speed random asccess memory.
Color bar signal can be a video tape recorder, DVD, and antenna or the like sends.Color bar signal color from left to right is white, Huang, and green grass or young crops, green, product, red, indigo plant, black, attach ratios also has regulation.
Different color bar signals has different standards, list the normal data of three kinds of color bar signals below with the form of form: table one is the data of 100/0/100/0 color bar signal, table two is the data of 100/0/100/25 color bar signal, and table three is the data of 100/0/75/0 color bar signal.Definition 1.0 is the level of informal voucher correspondence in the table, and 0 is the level of secret note correspondence, other as reference.
Table one:
Color code signal | ??R | ??G | ??B | ??Y | ??R-Y | ??B-Y |
In vain | ??1.0 | ??1.0 | ??1.0 | ??1.0 | ??0 | ??0 |
Yellow | ??1.0 | ??1.0 | ??0 | ??0.89 | ??0.11 | ??-0.89 |
Blue or green | ??0 | ??1.0 | ??1.0 | ??0.70 | ??-0.70 | ??0.30 |
Green | ??0 | ??1.0 | ??0 | ??0.59 | ??-0.59 | ??-0.59 |
Product | ??1.0 | ??0 | ??1.0 | ??0.41 | ??0.59 | ??0.59 |
Red | ??1.0 | ??0 | ??0 | ??0.30 | ??0.70 | ??-0.30 |
Blue | ??0 | ??0 | ??1.0 | ??0.11 | ??-0.11 | ??0.89 |
Black | ??0 | ??0 | ??0 | ??0 | ??0 | ??0 |
Table two:
Color code signal | ??R | ??G | ??B | ??Y | ??R-Y | ??B-Y |
In vain | ??1.0 | ??1.0 | ??1.0 | ??1.0 | ??0 | ??0 |
Color code signal | ??R | ??G | ??B | ??Y | ??R-Y | ??B-Y |
Yellow | ??1.0 | ??1.0 | ??0.25 | ??0.91 | ??0.09 | ??-0.66 |
Blue or green | ??0.25 | ??1.0 | ??1.0 | ??0.78 | ??-0.53 | ??0.22 |
Green | ??0.25 | ??1.0 | ??0.25 | ??0.69 | ??-0.44 | ??-0.44 |
Product | ??1.0 | ??0.25 | ??1.0 | ??0.56 | ??0.44 | ??0.44 |
Red | ??1.0 | ??0.25 | ??0.25 | ??0.47 | ??0.53 | ??-0.22 |
Blue | ??0.25 | ??0.25 | ??1.0 | ??0.34 | ??-0.09 | ??0.66 |
Black | ??0 | ??0 | ??0 | ??0 | ??0 | ??0 |
Table three:
Color code signal | ??R | ??G | ??B | ??Y | ??R-Y | ??B-Y |
In vain | ??1.0 | ??1.0 | ??1.0 | ??1.0 | ??0 | ??0 |
Yellow | ??0.75 | ??0.75 | ??0 | ??0.66 | ??0.09 | ??-0.66 |
Blue or green | ??0 | ??0.75 | ??0.75 | ??0.53 | ??-0.53 | ??0.22 |
Green | ??0 | ??0.75 | ??0 | ??0.44 | ??-0.44 | ??-0.44 |
Product | ??0.75 | ??0 | ??0.75 | ??0.31 | ??0.44 | ??0.44 |
Red | ??0.75 | ??0 | ??0 | ??0.22 | ??0.53 | ??-0.22 |
Blue | ??0 | ??0 | ??0.75 | ??0.09 | ??-0.09 | ??0.66 |
Black | ??0 | ??0 | ??0 | ??0 | ??0 | ??0 |
From the data of table one, table two and table three as can be seen, the R of three kinds of color bar signals (red), G (green), B (orchid), Y (Huang), U (U=B-Y, Huang Lanse), and V (V=R-Y, reddish yellow) all have difference more or less, therefore, we can judge, discern the kind of color bar signal according to the difference of these data.
At present, the application of DDR in display unit is quite extensive, generally is used for memory image process chip video captured image, therefore, be stored in the R of the color bar signal among the DDR after can catching according to image processing ics, G, B or Y, U, the value of V detects and distinguishes the kind of color bar signal.
Following emphasis is told about and is realized principle and flow process.Be the flow chart of in display device, setting up the standard color-bar signal database as shown in Figure 1, comprise the steps:
The first step: definition is white, Huang, and green grass or young crops, green, product, red, indigo plant, black eight kinds of color pairing positions in the video image of this display device.
Second step: import several standard colour bar vision signals respectively, these several color bar signals have been confirmed to be the color bar signal of standard.
The 3rd step: by in vain, Huang, green grass or young crops, green, product, red, indigo plant is deceived eight kinds of colors pairing location map in video image, finds the R of eight kinds of colors correspondence in DDR, G, B or Y, U, the value of V, these values are that video image is directly caught, and do not promote through brightness, colourity promotes, GAMMA correction or the like image processing.
The 4th step: with the R that reads, G, B or Y, U, V is as the reference value of every kind of color bar signal, and deviate is set, this is because of can not talkative every kind of color bar signal all being ten minutes standard, particularly analog signal, and level always has some slight errors, as long as in this deviate, all can think standard color-bar signal.With reference value, deviate writes code.
Be after having set up the standard color-bar signal database as shown in Figure 2, display device is realized the flow process of color bar signal measuring ability automatically with software:
The first step: input needs the color bar signal of detection.After treating that input imagery is stable, begin to detect.
Second step:, find R corresponding among the DDR, G, B or Y, U, the value of V by the mapping of eight kinds of color positions in video image.
The 3rd step: the reference value of the standard color-bar signal of standard color-bar signal database setting in these values and the software is contrasted one by one, allow rational deviate simultaneously, judge it is which kind of standard color-bar signal according to comparing result, if can not find standard color-bar signal, then think non-standard color bar signal.
The 4th step: by display message, prompting client testing result.
In (chromoscope) epoch of CRT in early days, because physical characteristic, television set can not receive the colour signal of 100% amplitude, therefore, regulation was being recorded tape, disk afterwards, when playing TV signal etc., can only play 75% colour signal, therefore, before playing these signals, the capital is broadcast one section color bar signal with display device and is detected, looks at that whether normal (some TV station uses that oscilloscope detects for the color bar signal exported.
The alleged display device of the present invention can be the display device (monitor that TV station uses) of test signal, also can be the display device (television set of normal domestic) of receiving terminal.By TV station, the test signal of a period of time all can be put in TV station before transmitting, and just comprises color bar signal (seeing whether color bar signal is the color bar signal of Chinese Industrial Standards (CIS)) in the test signal.
Claims (6)
1. the display device of an energy criterion of identification color bar signal, use high speed random asccess memory memory image process chip video captured image, it is characterized in that, has the standard color-bar signal database, defined the relative position of colour bar correspondence in described video image of eight kinds of colors in the described standard color-bar signal database respectively, and the signal value of corresponding red, green, blue component or Y, U, V component on the relative position in described video image; Read in the value of red, green, blue component corresponding on the relative position in the described video image in the described high speed random asccess memory or Y, U, V component respectively, and with described standard color-bar signal database in the respectively contrast one by one of value of respective components, identical then judge show on the described display device for standard color-bar signal, inequalityly then be judged as non-standard color bar signal.
2. the display device of energy criterion of identification color bar signal according to claim 1, it is characterized in that, defined the span of the signal value of the red, green, blue component of color bar signal correspondence of described eight kinds of colors or Y, U, V component in the described standard color-bar signal database respectively, the color bar signal that signal value all drops in the described span is judged as standard color-bar signal.
3. the display device of energy criterion of identification color bar signal according to claim 2 is characterized in that, comprises the data of more than one standard color-bar signal in the described standard color-bar signal database; The color bar signal that shows on the described display device respectively with described more than one standard color-bar signal contrast, whole non-standard color bar signals that just are judged as inequality.
4. the recognition methods of the display device of energy criterion of identification color bar signal use, use high speed random asccess memory memory image process chip video captured image, it is characterized in that, the first step, set up the standard color-bar signal database, defined the relative position of colour bar correspondence in described video image of eight kinds of colors in the described standard color-bar signal database respectively, and the signal value of corresponding red, green, blue component or Y, U, V component on the position in described video image; Second step, read position correspondence in the described video image described red, green, blue component in described high speed random asccess memory or the value of Y, U, V component respectively, and with described standard color-bar signal database in the value of respective components contrast one by one, identical then is standard color-bar signal, and inequality then is non-standard color bar signal.
5. the recognition methods that the display device of energy criterion of identification color bar signal according to claim 4 uses, it is characterized in that, defined the span of the signal value of the red, green, blue component of color bar signal correspondence of described eight kinds of colors or Y, U, V component in the described standard color-bar signal database in the described first step respectively; In described second step, the color bar signal of having only signal value all to drop in described span is judged as standard color-bar signal.
6. the recognition methods that the display device of energy criterion of identification color bar signal according to claim 4 uses is characterized in that, comprises the data of more than one standard color-bar signal in the described standard color-bar signal database in the described first step; The color bar signal that shows on the display device described in described second step respectively with described more than one standard color-bar signal contrast, whole non-standard color bar signals that just are judged as inequality.
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CN105744260A (en) * | 2014-12-09 | 2016-07-06 | 深圳艾科创新微电子有限公司 | Bar pattern detection method and device |
CN110010044A (en) * | 2019-04-02 | 2019-07-12 | 上海帆声图像科技有限公司 | It is a kind of to show the display detection method of equipment, apparatus and system |
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US4706108A (en) * | 1985-04-12 | 1987-11-10 | Sony Corporation | Automatic setup system for controlling color gain, hue and white balance of TV monitor |
US4914506A (en) * | 1989-04-24 | 1990-04-03 | Tektronix, Inc. | Component color bar alignment test signal |
CN1705380A (en) * | 2004-05-31 | 2005-12-07 | 光道视觉科技股份有限公司 | Video detection device |
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CN105744260A (en) * | 2014-12-09 | 2016-07-06 | 深圳艾科创新微电子有限公司 | Bar pattern detection method and device |
CN105744260B (en) * | 2014-12-09 | 2018-10-12 | 深圳开阳电子股份有限公司 | A kind of bar paten detection method and device |
CN110010044A (en) * | 2019-04-02 | 2019-07-12 | 上海帆声图像科技有限公司 | It is a kind of to show the display detection method of equipment, apparatus and system |
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