CN103037241B - Automatic test system of reproduction ratio - Google Patents
Automatic test system of reproduction ratio Download PDFInfo
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- CN103037241B CN103037241B CN201210557338.8A CN201210557338A CN103037241B CN 103037241 B CN103037241 B CN 103037241B CN 201210557338 A CN201210557338 A CN 201210557338A CN 103037241 B CN103037241 B CN 103037241B
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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 image measurement technical field, relate in particular to a kind of Auto-Test System of representation rate.
Background technology
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.Such as horizontal effective image pixel is 720, and actual displayed 680 pixels, so horizontal representation rate is exactly 680/720.
In television set, often running into different clients has different representation rate requirements, and because the difference of TV signal also can require to show by different representation rates, so testing and debug representation rate just becomes regular repeatedly jobing.In prior art, mainly adopt the image of the graduated image of tool as test use, be presented on television screen.Determine representation rate by the scale manually reading on screen-picture again, this method not only takies plenty of time and energy, and efficiency is low.
Summary of the invention
The embodiment of the present 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 present invention provides a kind of Auto-Test System of representation rate, comprises test terminal, signal source generator and image acquisition device;
Described test terminal, for sending passage switching command to display device to be tested, controls described display device and is switched to the signalling channel that needs test;
Described signal source generator, for to described display device output reference picture signal;
Described image acquisition device, for gathering described display device at the image that receives actual displayed after described benchmark image signal, and gives described test terminal by the image transmitting of described actual displayed;
Described test terminal, also for receiving the image of described actual displayed, and calculates according to the image of described actual displayed and the local benchmark image of preserving, and obtains the representation rate of described display device.
Wherein, the length of described benchmark image is L
11, width is W
11; It is L that the middle part of described benchmark image has length
12, width is W
12rectangular image region; 0 < L
12< L
11, 0 < W
12< W
11; Described rectangular image area configurations is the first color, and other image-regions of periphery, described rectangular image region are configured to the second color.
Further, calculate according to the image of described actual displayed and the local benchmark image of preserving described test terminal, obtains the representation rate of described display device, comprising:
Taking the length direction of image as X direction, taking the Width of image as y direction, taking the lower left corner of image as the origin of coordinates, build coordinate system;
Find out the centre coordinate (L of the image of described actual displayed
21/ 2, W
21/ 2); Wherein, L
21for the length of the image of described actual displayed, W
21for the width of 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 image slices vegetarian refreshments is by the second color transition during to the first color, there is coordinate points (X1, the W of color saltus step 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 image slices vegetarian refreshments is by the second color transition during to the first color, there is the coordinate points (L of color saltus step 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 image slices vegetarian refreshments is by the second color transition during to the first color, there is coordinate points (X2, the W of color saltus step 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 image slices vegetarian refreshments is by the second color transition during to the first color, there is the coordinate points (L of color saltus step in record
21/ 2, Y2);
Calculate the length L in the rectangular image region of the first color in the image that obtains described actual displayed
22and width W
22; L
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 is also for judging whether described horizontal representation rate Z1 meets demand with vertical representation rate Z2; If the demand of not meeting, 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 also for judging that whether the image of described display device actual displayed occurs skew, comprising:
Calculate the coordinate (X3, Y3) at the 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;
By X3 and L
21/ 2 compare; If X3 > is L
21/ 2, judge that the image of described actual displayed is offset to the right; If X3=L
21/ 2, judge that left and right skew does not occur the image of described actual displayed; If X3 < is L
21/ 2, judge that the image of described actual displayed is offset left;
By Y3 and W
21/ 2 compare; If Y3 > is W
21/ 2, judge that the image of described actual displayed is upwards offset; If Y3=W
21/ 2, judge that the image of described actual displayed does not occur to be offset up and down; If Y3 < is W
21/ 2, judge that the image of described actual displayed offsets downward.
Described test terminal also for determine the image generation left avertence, right avertence of described display device actual displayed, on when inclined to one side, lower partially at least one, send 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 present invention provides, comprises test terminal, signal source generator and image acquisition device.Control display device by test terminal and be switched to the signalling channel that needs test, 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, finally obtain representation rate by test terminal according to the image of described actual displayed and local benchmark image calculating of preserving, 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 by test terminal control display device carry out representation rate regulate and picture position regulate, reach the object 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.
Brief description of the 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 after benchmark image signal.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
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 present 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, sends passage switching command for the display device 4 to be tested, controls described display device 4 and is switched to the signalling channel that needs test; So that described display device 4 can receive the picture signal that signal source generator 2 sends.When concrete enforcement, display device 4 can be the equipment that television set, computer etc. have image display function.
Signal source generator 2, for to described display device 4 output reference picture signals.
In one embodiment, described signal source generator 2 output reference picture signals also, for send image output control command to described signal source generator 2, are controlled in described test terminal 1.Signal source generator 2 receives after the image output control command of test terminal 1, sends benchmark image signal to display device 4.
In another embodiment, the pre-configured benchmark image that is useful on test of described signal source generator 2.Signal source generator 2 need to not controlled by described test terminal 1, can directly send benchmark image signal to display device 4.
Image acquisition device 3, for gathering described display device 4 at the image that receives actual displayed after described benchmark image signal, and gives described test terminal 1 by the image transmitting of described actual displayed.When concrete enforcement, for different signal sources, described image acquisition device 3 can be based on LVDS(Low-Voltage Differential Signaling, low-voltage differential signal transmission) capture card, or based on DVI(Digital Video Interface, be that digital video connects) capture card, or the image collecting device of other types.
Test terminal 1, also for receiving the image of described actual displayed, and calculates according to the image of described actual displayed and the local benchmark image of preserving, and 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
11.It is L that the middle part of described benchmark image has length
12, width is W
12rectangular image region (region 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 other image-regions (region B as shown in Figure 2) of periphery, described rectangular image region are configured to the second color.For example, region A is white, and region B is black.When concrete enforcement, the first color and the second color can be chosen arbitrarily, as long as ensure that the first color and the second color have different color coding values.
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 after benchmark image signal.
When test terminal 1 obtains after the image of display device 4 actual displayed, calculate according to the image of described actual displayed and the local benchmark image of preserving, obtain the representation rate of described display device 4, specifically comprise:
Taking the length direction of image as X direction (x axle as shown in Figure 3), taking the Width of image as y direction (y axle as shown in Figure 3), taking the lower left corner of image as the origin of coordinates, build coordinate system.
Find out the centre coordinate (L of the image of described actual displayed
21/ 2, W
21/ 2); Wherein, L
21for the length of the image of described actual displayed, W
21for the width of 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 image slices vegetarian refreshments is by the second color transition during to the first color, there is coordinate points (X1, the W of color saltus step 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 image slices vegetarian refreshments is by the second color transition during to the first color, there is the coordinate points (L of color saltus step 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 image slices vegetarian refreshments is by the second color transition during to the first color, there is coordinate points (X2, the W of color saltus step 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 image slices vegetarian refreshments is by the second color transition during to the first color, there is the coordinate points (L of color saltus step in record
21/ 2, Y2);
Calculate the length L in the rectangular image region of the first color in the image that obtains described actual displayed
22and width W
22; L
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 is also for judging whether described horizontal representation rate Z1 meets demand with vertical representation rate Z2; If the demand of not meeting, 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 present invention provides, described test terminal is also for judging that whether the image of described display device actual displayed occurs skew, comprising:
Calculate the coordinate (X3, Y3) at the 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;
By X3 and L
21/ 2 compare; If X3 > is L
21/ 2, judge that the image of described actual displayed is offset to the right; If X3=L
21/ 2, judge that left and right skew does not occur the image of described actual displayed; If X3 < is L
21/ 2, judge that the image of described actual displayed is offset left;
By Y3 and W
21/ 2 compare; If Y3 > is W
21/ 2, judge that the image of described actual displayed is upwards offset; If Y3=W
21/ 2, judge that the image of described actual displayed does not occur to be offset up and down; If Y3 < is W
21/ 2, judge that the image of described actual displayed offsets downward.
Described test terminal also for determine the image generation left avertence, right avertence of described display device actual displayed, on when inclined to one side, lower partially at least one, send 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 present invention provides, comprises test terminal, signal source generator and image acquisition device.Control display device by test terminal and be switched to the signalling channel that needs test, 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, finally obtain representation rate by test terminal according to the image of described actual displayed and local benchmark image calculating of preserving, 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 by test terminal control display device carry out representation rate regulate and picture position regulate, reach the object 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 the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (7)
1. an Auto-Test System for representation rate, is characterized in that, comprises test terminal, signal source generator and image acquisition device;
Described test terminal, for sending passage switching command to display device to be tested, controls described display device and is switched to the signalling channel that needs test;
Described signal source generator, for to described display device output reference picture signal;
Described image acquisition device, for gathering described display device at the image that receives actual displayed after described benchmark image signal, and gives described test terminal by the image transmitting of described actual displayed;
Described test terminal, also for receiving the image of described actual displayed, and calculates according to the image of described actual displayed and the local benchmark image of preserving, and obtains the representation rate of described display device;
The length of described benchmark image is L
11, width is W
11; It is L that the middle part of described benchmark image has length
12, width is W
12rectangular image region; 0 < L
12< L
11, 0 < W
12< W
11; Described rectangular image area configurations is the first color, and other image-regions of periphery, described rectangular image region are configured to the second color;
Calculate according to the image of described actual displayed and the local benchmark image of preserving described test terminal, obtains the representation rate of described display device, comprising:
Taking the length direction of image as X direction, taking the Width of image as y direction, taking the lower left corner of image as the origin of coordinates, build coordinate system;
Find out the centre coordinate (L of the image of described actual displayed
21/ 2, W
21/ 2); Wherein, L
21for the length of the image of described actual displayed, W
21for the width of 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 image slices vegetarian refreshments is by the second color transition during to the first color, there is coordinate points (X1, the W of color saltus step 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 image slices vegetarian refreshments is by the second color transition during to the first color, there is the coordinate points (L of color saltus step 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 image slices vegetarian refreshments is by the second color transition during to the first color, there is coordinate points (X2, the W of color saltus step 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 image slices vegetarian refreshments is by the second color transition during to the first color, there is the coordinate points (L of color saltus step in record
21/ 2, Y2);
Calculate the length L in the rectangular image region of the first color in the image that obtains described actual displayed
22and width W
22; L
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].
2. the Auto-Test System of representation rate as claimed in claim 1, is characterized in that, described signal source generator output reference picture signal also, for send image output control command to described signal source generator, is controlled in described test terminal.
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. the Auto-Test System of representation rate as claimed in claim 1, is characterized in that, described test terminal is also for judging whether described horizontal representation rate Z1 meets demand with vertical representation rate Z2; If the demand of not meeting, sends the regulating command of representation rate to described display device, the representation rate of described display device is regulated.
5. the Auto-Test System of representation rate as claimed in claim 4, is characterized in that, described test terminal is also for judging that whether the image of described display device actual displayed occurs skew, comprising:
Calculate the coordinate (X3, Y3) at the 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;
By X3 and L
21/ 2 compare; If X3 > is L
21/ 2, judge that the image of described actual displayed is offset to the right; If X3=L
21/ 2, judge that left and right skew does not occur the image of described actual displayed; If X3 < is L
21/ 2, judge that the image of described actual displayed is offset left;
By Y3 and W
21/ 2 compare; If Y3 > is W
21/ 2, judge that the image of described actual displayed is upwards offset; If Y3=W
21/ 2, judge that the image of described actual displayed does not occur to be offset up and down; If Y3 < is W
21/ 2, judge that the image of described actual displayed offsets downward.
6. the Auto-Test System of representation rate as claimed in claim 5, it is characterized in that, described test terminal also for determine the image generation left avertence, right avertence of described display device actual displayed, on when inclined to one side, lower partially at least one, send image shift regulating command to described display device, the picture position of described display device is regulated.
7. the Auto-Test System of the representation rate as described in claim 1 ~ 3 any one, is characterized in that, described image acquisition device is the capture card based on low-voltage differential signal transmission LVDS, or capture card based on digital visual interface DVI.
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| CN201210557338.8A CN103037241B (en) | 2012-12-20 | 2012-12-20 | Automatic test system of reproduction ratio |
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| CN103501436B (en) * | 2013-09-24 | 2016-09-21 | 深圳Tcl新技术有限公司 | Reproduction ratio method of testing and system thereof |
| CN105472375B (en) * | 2015-03-10 | 2017-09-05 | 深圳Tcl数字技术有限公司 | Reproduction rate testing method and terminal |
| CN106488226B (en) * | 2015-08-25 | 2019-01-04 | 研祥智能科技股份有限公司 | Automated detection method and device on a kind of production line |
| 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 |
| 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 |
| 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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