CN101635863B - Method and system for testing visual effect of display equipment - Google Patents
Method and system for testing visual effect of display equipment Download PDFInfo
- Publication number
- CN101635863B CN101635863B CN2008101425361A CN200810142536A CN101635863B CN 101635863 B CN101635863 B CN 101635863B CN 2008101425361 A CN2008101425361 A CN 2008101425361A CN 200810142536 A CN200810142536 A CN 200810142536A CN 101635863 B CN101635863 B CN 101635863B
- Authority
- CN
- China
- Prior art keywords
- signal
- image
- analysis
- tested
- display device
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The invention is suitable for the technical field of automation testing, in particular provides a method and a system for testing the visual effect of display equipment. The method comprises the following steps: a. according to a signal transmitted by a signal generator, the display equipment to be tested generates an image to be displayed; and b. after taking the image displayed by the display equipment to be tested, a vidicon transmits the image to an analysis control meter, and the analysis control meter analyzes and processes the image taken by the vidicon. The technical scheme of the invention can reduce the labor intensity of testing personnel for the most part and can increase the testing accuracy.
Description
Technical field
The invention belongs to the automatic test field, relate in particular to the visual effect of display equipment measuring technology.
Background technology
Along with the development of technology, the function that relevant manufacturer offers user's demonstration product gets more and more, and outward appearance is also more and more attractive in appearance, and simultaneously, the user requires also increasingly high to the each side that shows product, especially to showing the requirement of product visual effect aspect.
For satisfying the user to showing the requirement of product visual effect aspect; The manufacturer that shows product can carry out the test aspect the visual effect to product usually in the process of producing, but because the cost of existing testing equipment is higher, and the shortage of professionals of test aspect; A lot of manufacturers still adopt the traditional hand method of testing; This manual test method is inefficiency not only, and low precision, and error is high.
Therefore, be necessary to provide a kind of easy operating, lower-cost testing visual effect system and method, to satisfy actual demand.
Summary of the invention
The object of the present invention is to provide a kind of method and system of visual effect of display equipment test, be intended to solve the problem of display device being carried out testing visual effect.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is following: a kind of method of visual effect of display equipment test, described method comprises the steps:
A, display device to be tested show according to the signal generation image of signal generator transmission; Wherein, The signal of described signal generator transmission is followed successively by Red Square, Lv Chang, Lan Chang and a white TV signal, and display device to be tested generates image successively according to described Red Square, Lv Chang, Lan Chang and a white TV signal;
After b, video camera absorb said display device images displayed to be tested; Said image is transferred to the analysis and Control appearance; The analysis and Control appearance carries out analyzing and processing to the image of video camera picked-up, and said analysis and Control appearance judges also in the image analysis processing process whether the picture edge extracts success.
Described display device to be tested is a television set, and described signal generator is the TV signal generator.
Wherein step b also comprises:
Described analysis and Control appearance is adjusted the signal parameter that said signal generator is transferred to said display device to be tested according to analysis processing result, and described signal generator is transferred to said display device to be tested after producing signal according to adjusted signal parameter.
The signal of described signal generator transmission is a color bar signal; Described video camera is transferred to said analysis and Control appearance after absorbing the image of said display device to be tested according to described color bar signal generation, and described analysis and Control appearance judges that according to said video camera image transmitted said display device image to be tested has netrual colour.
The signal of described signal generator transmission is a multi-burst signal; Described video camera is transferred to said analysis and Control appearance after absorbing the image of said display device to be tested according to described multi-burst signal generation, and described analysis and Control appearance calculates the image resolution ratio of said display device to be tested according to said video camera image transmitted.
The signal of described signal generator transmission is the gridiron pattern signal; Described video camera is transferred to said analysis and Control appearance after absorbing the image of said display device to be tested according to described gridiron pattern signal generation, and described analysis and Control appearance is tested the reproduction of image rate of said display device to be tested according to said video camera image transmitted.
The present invention also provides a kind of system of visual effect of display equipment test, and described system comprises:
The signal generator, after being used for producing signal, the signal that transmits said generation is to display device to be tested, and the signal of described signal generator transmission is followed successively by Red Square, Lv Chang, Lan Chang and a white TV signal;
Video camera links to each other with the analysis and Control appearance, is used for absorbing the image of said display device to be tested according to the signal generation of said signal generator transmission, and is used for described image is transferred to said analysis and Control appearance;
The analysis and Control appearance is used for said video camera image transmitted is carried out analyzing and processing, and said analysis and Control appearance judges also in the image analysis processing process whether the picture edge extracts success.
Wherein, described analysis and Control appearance links to each other with described signal generator, is used for adjusting the signal that said signal generator produces.
Described display device to be tested is a television set, and described signal generator is the TV signal generator.
The present invention overcomes the deficiency of prior art; Produce signal by the signal generator; Be transferred to corresponding display device, display device shows on its display screen according to the signal generation image of signal generator transmission, the analysis and Control appearance that transmits after the images displayed on the video camera picked-up display device display screen; The analysis and Control appearance carries out analyzing and processing to image; And adjust the parameter of signal generator output signal according to the result of analyzing and processing, and the signal generator is exported signal again according to adjusted parameter and is transferred to corresponding little display device, and display device regenerates adjusted image and shows; Video camera absorbs the analysis and Control appearance that transmits behind the adjusted image; The analysis and Control appearance carries out analyzing and processing to adjusted image, and said process circulates repeatedly always, judges that until the analysis and Control appearance picture quality of display device meets the demands.The invention provides the method and system of the test visual effect of display equipment of a kind of extensive, high efficiency, low error, can satisfy enterprise demand, reduce entreprise cost.
Description of drawings
Fig. 1 is the test macro pie graph that the embodiment of the invention provides;
Fig. 2 is the color bar signal color that provides of embodiment of the invention H (colourity) curve chart just often;
Fig. 3 is color bar signal that the embodiment of the invention provides H (colourity) curve chart when not having color;
Fig. 4 is multi-burst signal human eye that the embodiment of the invention the provides brightness curve figure can differentiate the time;
Fig. 5 is multi-burst signal human eye that the embodiment of the invention the provides brightness curve figure can't differentiate the time.
Embodiment
Technical scheme provided by the invention is: produce signal by the signal generator; Be transferred to corresponding display device, display device shows on its display screen according to the signal generation image of signal generator transmission, the analysis and Control appearance that transmits after the images displayed on the video camera picked-up display device display screen; The analysis and Control appearance carries out analyzing and processing to image; And adjust the parameter of signal generator output signal according to the result of analyzing and processing, and the signal generator is exported signal again according to adjusted parameter and is transferred to corresponding display device, and display device regenerates adjusted image and shows; Video camera is transferred to the analysis and Control appearance after absorbing adjusted image; The analysis and Control appearance carries out analyzing and processing to adjusted image, and said process circulates repeatedly always, accomplishes the testing visual effect to display device until the analysis and Control appearance.
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In the embodiment of the invention, demonstration product to be tested is that example describes with the television set, and testing visual effect system that the embodiment of the invention provides and method of testing are equally applicable to other testing visual effects that shows product.It is example that signal generator in the embodiment of the invention adopts TV signal generation instrument; If test other display device; Then adopt the signal generator corresponding with equipment to be tested; Adopting computer that the image of picked-up is analyzed, when specifically using technical scheme of the present invention, also can be the analysis and Control instrument with said function.
The theory diagram of the testing visual effect system that the embodiment of the invention provides is as shown in Figure 1, comprises video camera, computer and TV signal generator.Wherein, the TV signal generator is connected with television set to be tested, is used for producing TV signal; The TV signal that is produced is imported into television set to be tested; This TV signal generator is simulated the TV signal that television set to be tested receives in actual use, after television set to be tested receives the TV signal of TV signal generator transmission, produces corresponding image according to this TV signal and on its display screen, shows; Video camera links to each other with computer; Be used for absorbing images displayed on the television display screen curtain to be tested, and the image of picked-up is transferred to computer and handles, computer is handled and is analyzed video camera image transmitted information.Computer links to each other with the TV signal generator; According to various parameters to treatment of picture analysis result adjustment TV signal generator; The TV signal generator is according to the TV signal of adjusted its output of parameter adjustment of computer then; After adjusted TV signal is outputed to television set to be tested, images displayed will be adjusted thereupon on the television display screen curtain to be tested, and video camera will absorb adjusted image; And with adjusted image transmission telegram in reply brain, computer will carry out Treatment Analysis to adjusted image.
Above-mentioned process moves in circles always, up to computer the video camera image transmitted is carried out analyzing and processing, accomplishes the test to project, and then the computer record data stop test.
Wherein, video camera can be taken continuous or single television image, and has enough big physical resolution, guarantees that the details of image is clear and undistorted, and can control shooting through computer, realizes the shooting control of automation;
The computer that the embodiment of the invention provides can install instruments Control Software and image processing software are used for controlling video camera, TV signal generator, and analyze the video camera image transmitted, and image transmitted is carried out image processing.
The instrument Control Software can adopt the Labview software (being installed on the computer in advance) of NI company, and image processing software can adopt matlab software (being installed on the computer in advance).
In the process of concrete operations, video camera adopts tripod or other fixture to fix, and satisfies the definition requirement with the image that guarantees picked-up.Video camera is transferred to computer through USB interface or GPIB (all purpose instrument bus) with the image that absorbs.The TV signal generator links to each other with computer through RS232 (serial port).
With above-mentioned equipment according to after shown in Figure 1 the connecting; Carry out software self check and device initialize; Can begin then to carry out testing process, after testing process begins, at first need confirm the picture scope; The scope that why will confirm television image is based on 2 reasons: the one, because scope that video camera is taken the photograph can not be only limited to television image itself; So must in the middle of the image that is absorbed, extract television image information, all the other pictures are masked, only in this way could study test to test event specially; The 2nd, the picture in all test events is handled and all will be the basis with this framework later on.Confirm that the work of the scope of television image can carry out according to following step:
1, transfer to test environment the darkest; Labview software control TV signal generator sends Red Square, Lv Chang, Lan Chang and white field signal successively; Television set produces corresponding picture according to the signal of TV signal generator transmission, and four image informations that video camera will absorb are successively passed to computer;
2, computer is with the image information binaryzation;
3, extract the picture edge, by means of the machine vision Function e dge () that image processing software matlab provides, the Canny factor is accomplished;
3 if three or three above pictures are arranged the edge within error range, think picture edge extracting success;
4, confirm after the picture scope, store edge parameters.
Specifically, the testing visual effect of television set comprises judges that image has the project testing of various visual correlations such as netrual colour, computed image resolution, reproduction of image rate, below describes respectively:
Project 1, judgement image have netrual colour
1, the TV signal generator produces color bar signal, transfers to television set to be tested, makes TV set image to be tested normal, and video camera is transferred to the picture of picked-up in the computer;
2, through regulating the parameter of TV signal generator, make television image lose colour gradually, video camera is transferred to the picture of picked-up and is used for Matlab software in the computer and carries out image and judge;
3, the computer expert cross software matlab judge video camera constantly the picture of transmission whether belong to coloured image;
If 4 judged results are netrual colours, then the reference record of tester is got off, fill in report according to reporting requirement.
Specifically, judging whether to belong to coloured image realizes through following process:
Computer is decomposed into HSV (H representes colourity, and S representes saturation, and V representes brightness) with the video camera image transmitted, extracts colourity H; Get then middle row in the picture colourity the mapping of H value--with the columns is transverse axis, H value is a longitudinal axis picture coordinate diagram; If diagramatic curve is not a straight line, then image is coloured image, and is as shown in Figure 2; If be straight line, image is a black and white image, and is as shown in Figure 3 (because be color bar signal; So when picture was normal, the colourity of each colour bar was inequality, drawing the coordinate diagram of coming out is a curve; But image becomes black and white; Be exactly that image does not have after the color, image chroma will be identical, and coordinate diagram will be a straight line).
Project 1 can be applied to test colored and black and white contrast, for example, the function of colour killer circuit, colored locking range, colour sensitivity, AFT (automatic frequency adjusting) scope is searched platform or the like.
Project 2, computed image resolution are used for the center image definition of television set to be tested is tested
1, the TV signal generator produces multi-burst signal, is transferred to television set to be tested then, and television image can be differentiated, and video camera is transferred to computer with the picture of picked-up;
2, through regulating the frequency of TV signal generator multi-burst signal, make television image can not differentiate striped (purpose of this step is test pattern level or vertical definition) gradually, video camera is transferred to computer with the picture of picked-up;
3, the computer expert crosses matlab and judges whether the image of constantly being passed back by video camera can with the naked eye be differentiated;
If 4 judge and can't differentiate,, fill in report (resolution (line number)=frequency (k level) * 400) with the reference record of tester.
Specifically, computer judges that whether image can with the naked eye be differentiated is to realize through following process:
At first; Computer utilizes matlab software that the video camera image transmitted is converted into black and white image, and get the picture middle row then and consider, with the columns transverse axis; Brightness value is that the longitudinal axis is drawn coordinate diagram; If coordinate diagram is intensive zigzag, and is as shown in Figure 4, judge that human eye can differentiate (show image still details people still can differentiate); If a simple level and smooth line, the judgement human eye can not be differentiated (showing that the image detail people can not differentiate) as shown in Figure 5;
Project 3, the test of reproduction of image rate
1, the TV signal generator produces the gridiron pattern signal, is transferred to television set to be tested then;
2, video camera absorbs images displayed on the television display screen to be tested, transfers to computer and handles;
3, computer is converted into black and white image with the video camera image transmitted, and binary image is sought the image border then;
4, calculate single grid length and width, get final product (the number * 100% that the grid number/test card that shows on representation rate=screen test pattern should show) with the image length and width divided by the grid radix again.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the method for a visual effect of display equipment test is characterized in that described method comprises the steps:
A, display device to be tested show according to the signal generation image of signal generator transmission; Wherein, The signal of described signal generator transmission is followed successively by Red Square, Lv Chang, Lan Chang and a white TV signal, and display device to be tested generates image successively according to described Red Square, Lv Chang, Lan Chang and a white TV signal;
After b, video camera absorb said display device images displayed to be tested; Said image is transferred to the analysis and Control appearance; The analysis and Control appearance carries out analyzing and processing to the image of video camera picked-up, and said analysis and Control appearance judges also in the image analysis processing process whether the picture edge extracts success.
2. method according to claim 1 is characterized in that, described display device to be tested is a television set, and described signal generator is the TV signal generator.
3. method according to claim 1 is characterized in that, wherein step b also comprises:
Described analysis and Control appearance is adjusted the signal parameter that said signal generator is transferred to said display device to be tested according to analysis processing result, and described signal generator is transferred to said display device to be tested after producing signal according to adjusted signal parameter.
4. method according to claim 1; It is characterized in that; The signal of described signal generator transmission is a color bar signal; Described video camera is transferred to said analysis and Control appearance after absorbing the image of said display device to be tested according to described color bar signal generation, and described analysis and Control appearance judges that according to said video camera image transmitted said display device image to be tested has netrual colour.
5. method according to claim 1; It is characterized in that; The signal of described signal generator transmission is a multi-burst signal; Described video camera is transferred to said analysis and Control appearance after absorbing the image of said display device to be tested according to described multi-burst signal generation, and described analysis and Control appearance calculates the image resolution ratio of said display device to be tested according to said video camera image transmitted.
6. method according to claim 1; It is characterized in that; The signal of described signal generator transmission is the gridiron pattern signal; Described video camera is transferred to said analysis and Control appearance after absorbing the image of said display device to be tested according to described gridiron pattern signal generation, and described analysis and Control appearance is tested the reproduction of image rate of said display device to be tested according to said video camera image transmitted.
7. the system of visual effect of display equipment test is characterized in that described system comprises:
The signal generator, after being used for producing signal, the signal that transmits said generation is to display device to be tested, and the signal of described signal generator transmission is followed successively by Red Square, Lv Chang, Lan Chang and a white TV signal;
Video camera links to each other with the analysis and Control appearance, is used for absorbing the image of said display device to be tested according to the signal generation of said signal generator transmission, and is used for described image is transferred to said analysis and Control appearance;
The analysis and Control appearance is used for said video camera image transmitted is carried out analyzing and processing, and said analysis and Control appearance judges also in the image analysis processing process whether the picture edge extracts success.
8. system according to claim 7 is characterized in that, described analysis and Control appearance links to each other with described signal generator, is used for adjusting the signal that said signal generator produces.
9. system according to claim 7 is characterized in that, described display device to be tested is a television set, and described signal generator is the TV signal generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101425361A CN101635863B (en) | 2008-07-25 | 2008-07-25 | Method and system for testing visual effect of display equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101425361A CN101635863B (en) | 2008-07-25 | 2008-07-25 | Method and system for testing visual effect of display equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101635863A CN101635863A (en) | 2010-01-27 |
| CN101635863B true CN101635863B (en) | 2012-03-21 |
Family
ID=41594891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101425361A Expired - Fee Related CN101635863B (en) | 2008-07-25 | 2008-07-25 | Method and system for testing visual effect of display equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101635863B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101873511A (en) * | 2010-07-09 | 2010-10-27 | 四川长虹电器股份有限公司 | Test system for panel TV set and method thereof |
| CN102340685B (en) * | 2010-07-15 | 2014-04-16 | 北京牡丹视源电子有限责任公司 | Method for measuring dynamic definition of display equipment |
| CN102572503B (en) * | 2010-12-30 | 2014-04-02 | 厦门华侨电子股份有限公司 | Automatic test system for functions of television set and method thereof |
| CN102244806A (en) * | 2011-06-27 | 2011-11-16 | 广州视源电子科技有限公司 | Method and system for automatically testing reception performance parameters of digital television |
| CN103179429B (en) * | 2011-12-20 | 2015-06-24 | 晨星软件研发(深圳)有限公司 | Test method and device for television system |
| CN103037241B (en) * | 2012-12-20 | 2014-08-20 | 广州视源电子科技股份有限公司 | Automatic test system of reproduction ratio |
| CN104182979A (en) * | 2014-08-22 | 2014-12-03 | 中国科学技术大学 | Visual impairment simulation method and device |
| CN104483964A (en) * | 2014-11-24 | 2015-04-01 | 珠海格力电器股份有限公司 | Automatic testing method, device and system |
| CN105472375B (en) * | 2015-03-10 | 2017-09-05 | 深圳Tcl数字技术有限公司 | Reproduction ratio method of testing and terminal |
| CN105354535B (en) * | 2015-09-29 | 2019-01-25 | 南京熊猫电子制造有限公司 | A kind of special Low Voltage Differential Signal Image Acquisition and processing method |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6246408B1 (en) * | 1997-05-27 | 2001-06-12 | Agilent Technologies, Inc. | Graphical system and method for invoking measurements in a signal measurement system |
| CN1361513A (en) * | 2000-12-27 | 2002-07-31 | 中国科学院长春光学精密机械与物理研究所 | Opened color video display function detecting system and method |
-
2008
- 2008-07-25 CN CN2008101425361A patent/CN101635863B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6246408B1 (en) * | 1997-05-27 | 2001-06-12 | Agilent Technologies, Inc. | Graphical system and method for invoking measurements in a signal measurement system |
| CN1361513A (en) * | 2000-12-27 | 2002-07-31 | 中国科学院长春光学精密机械与物理研究所 | Opened color video display function detecting system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101635863A (en) | 2010-01-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101635863B (en) | Method and system for testing visual effect of display equipment | |
| CN103402117B (en) | Based on the video image color cast detection method of Lab chrominance space | |
| CN103024434B (en) | Automatic test system based on image matching | |
| CN106101549A (en) | Automatic switching method, Apparatus and system round the clock | |
| CN101917631B (en) | Projection display color reproduction method under normal lighting environment | |
| CN108986721B (en) | Detection graph generation method for display panel detection | |
| CN105573036B (en) | A kind of LASER Light Source DLP display systems and display control method | |
| CN104933706A (en) | Imaging system color information calibration method | |
| CN108348150B (en) | Method for assessing the vision of an individual under predefined luminance conditions | |
| CN106226033B (en) | Detect the method and device of transparent substrates transmitance | |
| CN101815190B (en) | Projection display system and characteristic analysis method thereof | |
| CN103200349B (en) | Scanned image color cast automatic detection method | |
| CN202059518U (en) | System for white balance correction by using color plate | |
| CN105578179A (en) | System and method for detecting display frame rate of DMD (Digital Micro-mirror Device) | |
| EP2672719A2 (en) | Color calibration of a image capture device in a way that is adaptive to the scene to be captured | |
| CN104144332A (en) | Image color adjusting method and electronic device using the same | |
| Nagamine et al. | A quantitative evaluation method for luminance and color uniformity of a display screen based on human perception | |
| CN106441820A (en) | Display screen uniformity test method and system | |
| Yamaguchi et al. | Natural vision: Visual telecommunication based on multispectral technology | |
| CN102053393A (en) | Test device and test method for liquid crystal module | |
| CN202276428U (en) | Quality evaluating device of stereo projection apparatus | |
| CN105280124A (en) | Gamma measurement method and device for four-color display system | |
| CN103640331B (en) | A kind of printed matter definition detection method of optimization | |
| CN113012607A (en) | Display module detection method, device and system | |
| CN104484897A (en) | Three-dimensional display method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120321 Termination date: 20200725 |