CN103037241A - Automatic test system of reproduction ratio - Google Patents
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- CN103037241A CN103037241A CN2012105573388A CN201210557338A CN103037241A CN 103037241 A CN103037241 A CN 103037241A CN 2012105573388 A CN2012105573388 A CN 2012105573388A CN 201210557338 A CN201210557338 A CN 201210557338A CN 103037241 A CN103037241 A CN 103037241A
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Abstract
The invention discloses an automatic test system of a reproduction ratio. The automatic test system of the reproduction ratio comprises a test terminal, a signal resource generator and an image collector. The test terminal is used for issuing a channel switching order to a to-be-tested display device to control the display device to be switched to a signal channel which needs to be tested. The signal resource generator is used for outputting reference image signals to the display device. The image collector is used for collecting the actual displayed image of the display device after the reference image signals are received, and transmitting the actual displayed image to the test terminal. The test terminal is further used for receiving the actual displayer image, and calculating according to the actual displayed image and a local preservation reference image to obtain the reproduction ratio of the display device. The automatic test system of the reproduction ratio can improve the test accuracy of the reproduction ratio of the display device, and test efficiency is high.
Description
Technical field
The present invention relates to the image measurement technical field, relate in particular to a kind of Auto-Test System of representation rate.
Background technology
The representation rate is an important indicator of TV images test, and it refers to that image programs that television screen reappears and TV station send the ratio of the image of image programs, are divided into vertical representation rate and horizontal representation rate.Be 720 such as horizontal effective image pixel, and actual displayed 680 pixels, so horizontal representation rate is exactly 680/720.
Often running into different clients in television set has different representation rate requirements, and owing to the difference of TV signal also can require to show with different representation rates, so testing and debug the representation rate just becomes regular repeatedly jobing.In the prior art, mainly adopt the graduated image of tool as the image of test usefulness, be presented on the television screen.Determine the representation rate by the scale that manually reads on the screen-picture again, this method not only takies plenty of time and energy, and efficient is low.
Summary of the invention
The embodiment of the invention proposes a kind of Auto-Test System of representation rate, can improve the representation rate test accuracy rate of display device, and testing efficiency is high.
The embodiment of the invention provides a kind of Auto-Test System of representation rate, comprises test terminal, signal source generator and image acquisition device;
Described test terminal is used for sending the passage switching command to display device to be tested, controls the signalling channel that described display device switches to needs test;
Described signal source generator is used for to described display device output reference picture signal;
Described image acquisition device is used for gathering the image of described display device actual displayed after receiving described benchmark image signal, and gives described test terminal with the image transmitting of described actual displayed;
Described test terminal also is used for receiving the image of described actual displayed, and calculates according to image and the local benchmark image of preserving of described actual displayed, obtains the representation rate of described display device.
Wherein, the length of described benchmark image is L
11, width is W
11It is L that the middle part of described benchmark image has length
12, width is W
12Rectangular image zone; 0＜L
12＜L
11, 0＜W
12＜W
11Described rectangular image area configurations is the first color, and other peripheral image-regions of described rectangular image zone are configured to the second color.
Further, calculate according to image and the local benchmark image of preserving of described actual displayed described test terminal, obtains the representation rate of described display device, comprising:
Take the length direction of image as X direction, take the Width of image as y direction, take the lower left corner of image as the origin of coordinates, make up coordinate system;
Find out the centre coordinate (L of the image of described actual displayed
21/ 2, W
21/ 2); Wherein, L
21Be the length of the image of described actual displayed, W
21Width for the image of described actual displayed;
From coordinate (0, W
21/ 2) to coordinate (L
21/ 2, W
21/ 2), read successively the color coding value of each pixel of the image of described actual displayed; When the color coding value of finding the image slices vegetarian refreshments by the second color transition during to the first color, coordinate points (X1, the W of color saltus step occurs in record
21/ 2);
From coordinate (L
21/ 2,0) to coordinate (L
21/ 2, W
21/ 2), read successively the color coding value of each pixel of the image of described actual displayed; When the color coding value of finding the image slices vegetarian refreshments by the second color transition during to the first color, the coordinate points (L of color saltus step occurs in record
21/ 2, Y1);
From coordinate (L
21, W
21/ 2) to coordinate (L
21/ 2, W
21/ 2), read successively the color coding value of each pixel of the image of described actual displayed; When the color coding value of finding the image slices vegetarian refreshments by the second color transition during to the first color, coordinate points (X2, the W of color saltus step occurs in record
21/ 2);
From coordinate (L
21/ 2, W
21) to coordinate (L
21/ 2, W
21/ 2), read successively the color coding value of each pixel of the image of described actual displayed; When the color coding value of finding the image slices vegetarian refreshments by the second color transition during to the first color, the coordinate points (L of color saltus step occurs in record
21/ 2, Y2);
Calculate the length L in the rectangular image zone of the first color in the image that obtains described actual displayed
22And width W
22L
22=X2-X1, W
22=Y2-Y1;
Calculate the horizontal representation rate Z1 and vertical representation rate Z2 that obtain described display device; Z1=L
21/ [(L
22/ L
12) * L
11], Z2=W
21/ [(W
22/ W
12) * W
11].
Described test terminal also is used for judging whether described horizontal representation rate Z1 meets demand with vertical representation rate Z2; If the demand of not meeting then sends the regulating command of representation rate to described display device, the representation rate of described display device is regulated.
Further, described test terminal is used for also judging whether the image of described display device actual displayed skew occurs, comprising:
Calculate the coordinate (X3, Y3) at center of the rectangular image of the first color in the image of described actual displayed; Wherein, X3=(X2-X1)/2, Y3=(Y2-Y1)/2;
With X3 and L
21/ 2 compare; If X3＞L
21/ 2, judge that then the image of described actual displayed is offset to the right; If X3=L
21/ 2, skew about the image of then judging described actual displayed does not occur; If X3＜L
21/ 2, judge that then the image of described actual displayed is offset left;
With Y3 and W
21/ 2 compare; If Y3＞W
21/ 2, then judge the upwards skew of image of described actual displayed; If Y3=W
21/ 2, judge that then the image of described actual displayed does not occur to be offset up and down; If Y3＜W
21/ 2, judge that then the image of described actual displayed offsets downward.
Described test terminal also be used for the image generation left avertence of determining described display device actual displayed, right avertence, on during inclined to one side, lower partially at least one, send the image shift regulating command to described display device, the picture position of described display device is regulated.
The Auto-Test System of the representation rate that the embodiment of the invention provides comprises test terminal, signal source generator and image acquisition device.Switched to the signalling channel that needs test by test terminal control display equipment, again by signal source generator to display device output reference picture signal, then gathered the image of display device actual displayed by image acquisition device, calculate the representation rate that obtains by the test terminal according to the image of described actual displayed and the local benchmark image of preserving at last, thereby realize the automatic test of representation rate.In addition, can also judge whether representation rate and picture position meet demand, if the demand of not meeting can also be carried out the adjusting of representation rate and picture position adjusting by test terminal control display equipment, reach the purpose of representation rate and picture position automatic calibration.The present invention can improve the representation rate test accuracy rate of display device, and testing efficiency is high.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the Auto-Test System of representation rate provided by the invention;
Fig. 2 is the schematic diagram of an embodiment of benchmark image provided by the invention;
Fig. 3 is the schematic diagram that display device provided by the invention receives an embodiment of the image of actual displayed behind the benchmark image signal.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Referring to Fig. 1, it is the structural representation of an embodiment of the Auto-Test System of representation rate provided by the invention.
The embodiment of the invention provides a kind of Auto-Test System of representation rate, test terminal 1, signal source generator 2 and image acquisition device 3; Specific as follows:
Test terminal 1 is used for sending the passage switching command to display device to be tested 4, controls the signalling channel that described display device 4 switches to needs test; So that described display device 4 can receive the picture signal that signal source generator 2 sends.During implementation, display device 4 can be the equipment that television set, computer etc. have image display function.
In one embodiment, described test terminal 1 also is used for sending image output control command to described signal source generator 2, controls described signal source generator 2 output reference picture signals.Signal source generator 2 sends the benchmark image signal to display device 4 after receiving the image output control command of test terminal 1.
In another embodiment, the described signal source generator 2 pre-configured benchmark images that are useful on test.Signal source generator 2 need to by 1 control of described test terminal, can directly not send the benchmark image signal to display device 4.
Test terminal 1 also is used for receiving the image of described actual displayed, and calculates according to image and the local benchmark image of preserving of described actual displayed, obtains the representation rate of described display device 4.
Referring to Fig. 2, it is the schematic diagram of an embodiment of benchmark image provided by the invention.
The length of benchmark image is L
11, width is W
11It is L that the middle part of described benchmark image has length
12, width is W
12Rectangular image zone (regional A as shown in Figure 2); 0＜L
12＜L
11, 0＜W
12＜W
11
Described rectangular image area configurations is the first color, and peripheral other image-regions (regional B as shown in Figure 2) in described rectangular image zone are configured to the second color.For example, regional A is white, and regional B is black.During implementation, the first color and the second color can be chosen arbitrarily, as long as guarantee that the first color has different color coding values with the second color.
Referring to Fig. 3, it is the schematic diagram that display device provided by the invention receives an embodiment of the image of actual displayed behind the benchmark image signal.
After test terminal 1 obtains the image of display device 4 actual displayed, calculate according to the image of described actual displayed and the benchmark image of local preservation, obtain the representation rate of described display device 4, specifically comprise:
Take the length direction of image as X direction (x axle as shown in Figure 3), take the Width of image as y direction (y axle as shown in Figure 3), take the lower left corner of image as the origin of coordinates, make up coordinate system.
Find out the centre coordinate (L of the image of described actual displayed
21/ 2, W
21/ 2); Wherein, L
21Be the length of the image of described actual displayed, W
21Width for the image of described actual displayed;
From coordinate (0, W
21/ 2) to coordinate (L
21/ 2, W
21/ 2), read successively the color coding value of each pixel of the image of described actual displayed; When the color coding value of finding the image slices vegetarian refreshments by the second color transition during to the first color, coordinate points (X1, the W of color saltus step occurs in record
21/ 2);
From coordinate (L
21/ 2,0) to coordinate (L
21/ 2, W
21/ 2), read successively the color coding value of each pixel of the image of described actual displayed; When the color coding value of finding the image slices vegetarian refreshments by the second color transition during to the first color, the coordinate points (L of color saltus step occurs in record
21/ 2, Y1);
From coordinate (L
21, W
21/ 2) to coordinate (L
21/ 2, W
21/ 2), read successively the color coding value of each pixel of the image of described actual displayed; When the color coding value of finding the image slices vegetarian refreshments by the second color transition during to the first color, coordinate points (X2, the W of color saltus step occurs in record
21/ 2);
From coordinate (L
21/ 2, W
21) to coordinate (L
21/ 2, W
21/ 2), read successively the color coding value of each pixel of the image of described actual displayed; When the color coding value of finding the image slices vegetarian refreshments by the second color transition during to the first color, the coordinate points (L of color saltus step occurs in record
21/ 2, Y2);
Calculate the length L in the rectangular image zone of the first color in the image that obtains described actual displayed
22And width W
22L
22=X2-X1, W
22=Y2-Y1;
Calculate the horizontal representation rate Z1 and vertical representation rate Z2 that obtain described display device; Z1=L
21/ [(L
22/ L
12) * L
11], Z2=W
21/ [(W
22/ W
12) * W
11].
Described test terminal 1 also is used for judging whether described horizontal representation rate Z1 meets demand with vertical representation rate Z2; If the demand of not meeting then sends the regulating command of representation rate to described display device 4, the representation rate of described display device 4 is regulated.
In addition, the Auto-Test System of the representation rate that the embodiment of the invention provides, described test terminal is used for also judging whether the image of described display device actual displayed skew occurs, comprising:
Calculate the coordinate (X3, Y3) at center of the rectangular image of the first color in the image of described actual displayed; Wherein, X3=(X2-X1)/2, Y3=(Y2-Y1)/2;
With X3 and L
21/ 2 compare; If X3＞L
21/ 2, judge that then the image of described actual displayed is offset to the right; If X3=L
21/ 2, skew about the image of then judging described actual displayed does not occur; If X3＜L
21/ 2, judge that then the image of described actual displayed is offset left;
With Y3 and W
21/ 2 compare; If Y3＞W
21/ 2, then judge the upwards skew of image of described actual displayed; If Y3=W
21/ 2, judge that then the image of described actual displayed does not occur to be offset up and down; If Y3＜W
21/ 2, judge that then the image of described actual displayed offsets downward.
Described test terminal also be used for the image generation left avertence of determining described display device actual displayed, right avertence, on during inclined to one side, lower partially at least one, send the image shift regulating command to described display device, the picture position of described display device is regulated.
The Auto-Test System of the representation rate that the embodiment of the invention provides comprises test terminal, signal source generator and image acquisition device.Switched to the signalling channel that needs test by test terminal control display equipment, again by signal source generator to display device output reference picture signal, then gathered the image of display device actual displayed by image acquisition device, calculate the representation rate that obtains by the test terminal according to the image of described actual displayed and the local benchmark image of preserving at last, thereby realize the automatic test of representation rate.In addition, can also judge whether representation rate and picture position meet demand, if the demand of not meeting can also be carried out the adjusting of representation rate and picture position adjusting by test terminal control display equipment, reach the purpose of representation rate and picture position automatic calibration.The present invention can improve the representation rate test accuracy rate of display device, and testing efficiency is high.
The above is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also are considered as protection scope of the present invention.
Claims (9)
1. the Auto-Test System of a representation rate is characterized in that, comprises test terminal, signal source generator and image acquisition device;
Described test terminal is used for sending the passage switching command to display device to be tested, controls the signalling channel that described display device switches to needs test;
Described signal source generator is used for to described display device output reference picture signal;
Described image acquisition device is used for gathering the image of described display device actual displayed after receiving described benchmark image signal, and gives described test terminal with the image transmitting of described actual displayed;
Described test terminal also is used for receiving the image of described actual displayed, and calculates according to image and the local benchmark image of preserving of described actual displayed, obtains the representation rate of described display device.
2. the Auto-Test System of representation rate as claimed in claim 1 is characterized in that, described test terminal also is used for sending image output control command to described signal source generator, controls described signal source generator output reference picture signal.
3. the Auto-Test System of representation rate as claimed in claim 1 is characterized in that, the pre-configured benchmark image that is useful on test of described signal source generator.
4. such as the Auto-Test System of each described representation rate of claim 1 ~ 3, it is characterized in that, the length of described benchmark image is L
11, width is W
11It is L that the middle part of described benchmark image has length
12, width is W
12Rectangular image zone; 0＜L
12＜L
11, 0＜W
12＜W
11
Described rectangular image area configurations is the first color, and other peripheral image-regions of described rectangular image zone are configured to the second color.
5. the Auto-Test System of representation rate as claimed in claim 4 is characterized in that, calculate according to image and the local benchmark image of preserving of described actual displayed described test terminal, obtains the representation rate of described display device, comprising:
Take the length direction of image as X direction, take the Width of image as y direction, take the lower left corner of image as the origin of coordinates, make up coordinate system;
Find out the centre coordinate (L of the image of described actual displayed
21/ 2, W
21/ 2); Wherein, L
21Be the length of the image of described actual displayed, W
21Width for the image of described actual displayed;
From coordinate (0, W
21/ 2) to coordinate (L
21/ 2, W
21/ 2), read successively the color coding value of each pixel of the image of described actual displayed; When the color coding value of finding the image slices vegetarian refreshments by the second color transition during to the first color, coordinate points (X1, the W of color saltus step occurs in record
21/ 2);
From coordinate (L
21/ 2,0) to coordinate (L
21/ 2, W
21/ 2), read successively the color coding value of each pixel of the image of described actual displayed; When the color coding value of finding the image slices vegetarian refreshments by the second color transition during to the first color, the coordinate points (L of color saltus step occurs in record
21/ 2, Y1);
From coordinate (L
21, W
21/ 2) to coordinate (L
21/ 2, W
21/ 2), read successively the color coding value of each pixel of the image of described actual displayed; When the color coding value of finding the image slices vegetarian refreshments by the second color transition during to the first color, coordinate points (X2, the W of color saltus step occurs in record
21/ 2);
From coordinate (L
21/ 2, W
21) to coordinate (L
21/ 2, W
21/ 2), read successively the color coding value of each pixel of the image of described actual displayed; When the color coding value of finding the image slices vegetarian refreshments by the second color transition during to the first color, the coordinate points (L of color saltus step occurs in record
21/ 2, Y2);
Calculate the length L in the rectangular image zone of the first color in the image that obtains described actual displayed
22And width W
22L
22=X2-X1, W
22=Y2-Y1;
Calculate the horizontal representation rate Z1 and vertical representation rate Z2 that obtain described display device; Z1=L
21/ [(L
22/ L
12) * L
11], Z2=W
21/ [(W
22/ W
12) * W
11].
6. the Auto-Test System of representation rate as claimed in claim 5 is characterized in that, described test terminal also is used for judging whether described horizontal representation rate Z1 meets demand with vertical representation rate Z2; If the demand of not meeting then sends the regulating command of representation rate to described display device, the representation rate of described display device is regulated.
7. the Auto-Test System of representation rate as claimed in claim 6 is characterized in that, described test terminal is used for also judging whether the image of described display device actual displayed skew occurs, comprising:
Calculate the coordinate (X3, Y3) at center of the rectangular image of the first color in the image of described actual displayed; Wherein, X3=(X2-X1)/2, Y3=(Y2-Y1)/2;
With X3 and L
21/ 2 compare; If X3＞L
21/ 2, judge that then the image of described actual displayed is offset to the right; If X3=L
21/ 2, skew about the image of then judging described actual displayed does not occur; If X3＜L
21/ 2, judge that then the image of described actual displayed is offset left;
With Y3 and W
21/ 2 compare; If Y3＞W
21/ 2, then judge the upwards skew of image of described actual displayed; If Y3=W
21/ 2, judge that then the image of described actual displayed does not occur to be offset up and down; If Y3＜W
21/ 2, judge that then the image of described actual displayed offsets downward.
8. the Auto-Test System of representation rate as claimed in claim 7, it is characterized in that, described test terminal also be used for the image generation left avertence of determining described display device actual displayed, right avertence, on during inclined to one side, lower partially at least one, send the image shift regulating command to described display device, the picture position of described display device is regulated.
9. such as the Auto-Test System of each described representation rate of claim 1 ~ 3, it is characterized in that, described image acquisition device is based on the capture card of low-voltage differential signal transmission LVDS, or based on the capture card of digital visual interface DVI.
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| 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 |
| CN105389809B (en) * | 2015-10-26 | 2018-09-25 | 广州视源电子科技股份有限公司 | Measurement of the display characteristics mthods, systems and devices |
| CN105389809A (en) * | 2015-10-26 | 2016-03-09 | 广州视源电子科技股份有限公司 | Display performance testing method, system and device |
| CN108012180A (en) * | 2017-12-06 | 2018-05-08 | 深圳Tcl新技术有限公司 | Program broadcasting method, TV and storage medium |
| CN108012180B (en) * | 2017-12-06 | 2020-12-08 | 深圳Tcl新技术有限公司 | Program playing method, television and storage medium |
| 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 |
| CN112822485A (en) * | 2019-11-18 | 2021-05-18 | 青岛海尔多媒体有限公司 | Reproduction rate debugging method and device and display equipment |
| CN111510714A (en) * | 2020-04-24 | 2020-08-07 | 广州视源电子科技股份有限公司 | Reproduction rate determination method, reproduction rate determination device, terminal and storage medium |
| CN111510714B (en) * | 2020-04-24 | 2022-05-13 | 广州视源电子科技股份有限公司 | Reproduction rate determination method, reproduction rate determination device, terminal and storage medium |
| CN115914767A (en) * | 2022-11-11 | 2023-04-04 | 深圳创维－Rgb电子有限公司 | Reproduction rate adjusting method, system, television and computer readable storage medium |
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