CN104378626A - Time delay testing system of image transmitting system and method for testing time delay testing system - Google Patents
Time delay testing system of image transmitting system and method for testing time delay testing system Download PDFInfo
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- CN104378626A CN104378626A CN201410691788.5A CN201410691788A CN104378626A CN 104378626 A CN104378626 A CN 104378626A CN 201410691788 A CN201410691788 A CN 201410691788A CN 104378626 A CN104378626 A CN 104378626A
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Abstract
The invention discloses a time delay testing system of an image transmitting system. The time delay testing system comprises a digital DVD, an image transmitter, an image receiver, a plurality of video collecting cards, a cache, a matching device and a time delay calculating and result displaying device. The digital DVD is connected with the image transmitter which is connected with the image receiver. The digital DVD is further connected with the video collecting card I which is connected with the cache. The image receiver is connected with the video collecting card II which is connected with the matching device. The cache is connected with the matching device which is further connected with the time delay calculating and result displaying device. The invention further discloses a method for testing the time delay testing system with the image transmitting system. By means of the digital image matching method, the accuracy of a time delay test of the image transmitting system is improved, and test errors are reduced through an average algorithm; test software is developed, and therefore testing operation is easy, and testing efficiency is improved.
Description
Technical field
The present invention relates to a kind of delay testing system of image delivering system.
The invention still further relates to a kind of method of testing of delay testing system of application image transmission system.Belong to field of data transmission.
Background technology
Image delivering system is the important step that missile weapon system " people is in loop " controls.Image transmitting time delay is one of key index of image delivering system, and propagation delay time does not reach designing requirement, directly will affect the accuracy that missile weapon system " people is in loop " controls to catch control.Therefore checking need be examined accurately to propagation delay time at design link.
At present, the time delay of image transmission system test method adopting transmission channel emulation, is namely emulated by the transmission link of computer to transmission channel, contrast initial pictures and target image time difference, i.e. time delay more.The advantage of the method is simple possible, transmission system material object is not needed to participate in test, the shortcoming existed is that Computer Simulation and real transmission channel there are differences, and test result error is comparatively large, the transmission channel performance simulation test that the applicable demonstration of design stage carries out.
Therefore, need to provide a kind of new technical scheme to solve the problems referred to above.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of delay testing system of image delivering system.
The present invention also technical issues that need to address is to provide the time delay measuring method of the high image delivering system of a kind of accuracy.
For solving technical problem of the present invention, the technical solution used in the present invention is:
A kind of delay testing system of image delivering system, it comprises digital DVD, picture transmitter, image receiver, multiple video frequency collection card, buffer memory, adaptation and time-delay calculation and result display, described digital DVD is connected with picture transmitter, described picture transmitter is connected with image receiver, described digital DVD is also connected with video frequency collection card I, described video frequency collection card I is connected with buffer memory, described image receiver is connected with video frequency collection card II, described video frequency collection card II is connected with adaptation, described buffer memory is connected with adaptation, described adaptation also shows with time-delay calculation and result and is connected.
A kind of delay testing system of application image transmission system carries out the method for testing, test process is as follows: digital DVD plays black matrix wrongly written or mispronounced character, and wrongly written or mispronounced character is consecutive variations numeral 1, 2, 3, 4, 5 ... each numeral is the special test CD of a two field picture, to picture transmitter input digital video, picture transmitter send image receiver by after video information compression process, two video frequency collection cards in machine are controlled in testing equipment, the original video of a video frequency collection card I Gather and input picture transmitter, and stored in buffer memory, another video frequency collection card II capture card gathers the video that image receiver receives, adaptation by matching ratio to find at buffer area and image receiver receives the original image of images match, and carry out time-delay calculation and result display, every frame video transmission delay is: it is poor with the frame number receiving image that every two field picture transmission time is multiplied by original image in adaptation.
In the process of test, taking accumulated time to test, as tested 3 minutes, 10 minutes, averaging.
Beneficial effect of the present invention: the present invention adopts the method for Image-matching, improves the accuracy of time delay of image transmission system test, reduces test error, and develop testing software by average algorithm, and test operation is simple, improves testing efficiency.
Accompanying drawing explanation
Fig. 1 is the delay testing system block diagram of image delivering system of the present invention.
Wherein, 1, digital DVD, 2, picture transmitter, 3, image receiver, 4, video frequency collection card I, 5, buffer memory, 6, video frequency collection card II, 7, adaptation, 8, time-delay calculation and result display.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.Following examples, only for illustration of the present invention, are not used for limiting the scope of the invention.
With reference to figure 1, the delay testing system of a kind of image delivering system of the present invention, it comprises digital DVD1, picture transmitter 2, image receiver 3, multiple video frequency collection card, buffer memory 5, adaptation 7 and time-delay calculation and result display 8, numeral DVD1 is connected with picture transmitter 2, picture transmitter 2 is connected with image receiver 3, numeral DVD1 is also connected with video frequency collection card I 4, video frequency collection card I 4 is connected with buffer memory 5, image receiver 3 is connected with video frequency collection card II 6, video frequency collection card II 6 is connected with adaptation 7, buffer memory 5 is connected with adaptation 7, adaptation 7 also shows 8 with time-delay calculation and result and is connected.
Delay testing system based on above-mentioned image delivering system carries out the method for testing, and method of testing is as follows:
Numeral DVD1 plays black matrix wrongly written or mispronounced character, and wrongly written or mispronounced character is consecutive variations numeral 1, 2, 3, 4, 5 ... each numeral is the special test CD of a two field picture, digital video is inputted to picture transmitter 2, picture transmitter 2 send image receiver 3 by after video information compression process, two video frequency collection cards 4 in machine are controlled in testing equipment, 6, the original video of a video frequency collection card I 4 Gather and input picture transmitter 2, and stored in buffer memory 5, another video frequency collection card II 6 capture card gathers the video that image receiver 3 receives, adaptation 7 by matching ratio to find at buffer area and image receiver 3 receives the original image of images match, and carry out time-delay calculation and result display 8, every frame video transmission delay is: it is poor with the frame number receiving image that every two field picture transmission time is multiplied by original image in adaptation 7.In the process of test, take accumulated time to test, as tested 3 minutes, 10 minutes, averaging, realizing the accurate test of image transmitting time delay.
The present invention adopts the method for Image-matching, improves the accuracy of time delay of image transmission system test, reduces test error, and develop testing software by average algorithm, and test operation is simple, improves testing efficiency.
Claims (3)
1. the delay testing system of an image delivering system, it is characterized in that: it comprises digital DVD, picture transmitter, image receiver, multiple video frequency collection card, buffer memory, adaptation and time-delay calculation and result display, described digital DVD is connected with picture transmitter, described picture transmitter is connected with image receiver, described digital DVD is also connected with video frequency collection card I, described video frequency collection card I is connected with buffer memory, described image receiver is connected with video frequency collection card II, described video frequency collection card II is connected with adaptation, described buffer memory is connected with adaptation, described adaptation also shows with time-delay calculation and result and is connected.
2. a kind of delay testing system of application image transmission system carries out the method for testing according to claim 1, it is characterized in that, test process is as follows: digital DVD plays black matrix wrongly written or mispronounced character, and wrongly written or mispronounced character is consecutive variations numeral 1, 2, 3, 4, 5 ... each numeral is the special test CD of a two field picture, to picture transmitter input digital video, picture transmitter send image receiver by after video information compression process, two video frequency collection cards in machine are controlled in testing equipment, the original video of a video frequency collection card I Gather and input picture transmitter, and stored in buffer memory, another video frequency collection card II capture card gathers the video that image receiver receives, adaptation by matching ratio to find at buffer area and image receiver receives the original image of images match, and carry out time-delay calculation and result display, every frame video transmission delay is: it is poor with the frame number receiving image that every two field picture transmission time is multiplied by original image in adaptation.
3. a kind of application image transmission system delay testing system carries out the method for testing according to claim 2, it is characterized in that, taking accumulated time to test, as tested 3 minutes, 10 minutes, averaging in the process of test.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105744265A (en) * | 2016-02-18 | 2016-07-06 | 江西洪都航空工业集团有限责任公司 | Portable test equipment for image transmitting device |
| CN106534843A (en) * | 2016-11-14 | 2017-03-22 | 北京凌宇智控科技有限公司 | Delay measurement method and device |
| CN107449977A (en) * | 2016-12-29 | 2017-12-08 | 福建奥通迈胜电力科技有限公司 | A kind of split-second precision difference computational methods based on image comparison technology |
| CN108307190A (en) * | 2017-01-13 | 2018-07-20 | 欧普菲有限公司 | Method, apparatus for testing display and computer program product |
| CN112437277A (en) * | 2020-11-20 | 2021-03-02 | 江西洪都航空工业集团有限责任公司 | Measurement method and measurement system for processing time delay of acquisition and control data link |
| CN113612988A (en) * | 2021-07-20 | 2021-11-05 | 深圳市拔超科技有限公司 | Method and device for automatically testing video delay and video transmission equipment |
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| WO1996011550A1 (en) * | 1994-10-11 | 1996-04-18 | Pixel Instruments Corporation | Delay detector apparatus and method for plural image sequences |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105744265A (en) * | 2016-02-18 | 2016-07-06 | 江西洪都航空工业集团有限责任公司 | Portable test equipment for image transmitting device |
| CN106534843A (en) * | 2016-11-14 | 2017-03-22 | 北京凌宇智控科技有限公司 | Delay measurement method and device |
| CN107449977A (en) * | 2016-12-29 | 2017-12-08 | 福建奥通迈胜电力科技有限公司 | A kind of split-second precision difference computational methods based on image comparison technology |
| CN108307190A (en) * | 2017-01-13 | 2018-07-20 | 欧普菲有限公司 | Method, apparatus for testing display and computer program product |
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| CN112437277A (en) * | 2020-11-20 | 2021-03-02 | 江西洪都航空工业集团有限责任公司 | Measurement method and measurement system for processing time delay of acquisition and control data link |
| CN113612988A (en) * | 2021-07-20 | 2021-11-05 | 深圳市拔超科技有限公司 | Method and device for automatically testing video delay and video transmission equipment |
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