CN108093252A - Quality determining method, the apparatus and system of video signal path - Google Patents
Quality determining method, the apparatus and system of video signal path Download PDFInfo
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- CN108093252A CN108093252A CN201711424285.1A CN201711424285A CN108093252A CN 108093252 A CN108093252 A CN 108093252A CN 201711424285 A CN201711424285 A CN 201711424285A CN 108093252 A CN108093252 A CN 108093252A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
Abstract
Quality determining method, apparatus and system the present invention relates to video signal path, belong to combination technical field.The described method includes：Multiple first videos are sent to multiple video control apparatus；Each video control apparatus is made to handle respectively first video, obtains the second video；Video request signal is sent respectively to the multiple video control apparatus；Receive multiple second videos that the multiple video control apparatus is sent；The access that video passes through during from the first video of transmission to the second video of reception forms corresponding video signal path；First video with the multiple second video is compared respectively, obtains the quality measurements of the multiple second video；And then obtain the quality measurements of multiple corresponding video signal paths.Above-mentioned technical proposal solves the problems, such as to expend substantial amounts of manpower and time during multiple channel checks to vision signal, and the quality for realizing multiple video signal paths is used for quickly detecting.
Description
Technical field
The present invention relates to combination technical fields, more particularly to the quality determining method of video signal path, device, are
System, computer readable storage medium and computer equipment.
Background technology
Joined screen system is had been applied to including multiple system regions such as traffic, electric power, security.It is built in joined screen system
Initial stage, the engineers and technicians of combination generally require and will be opened to one by one per the vision signal all the way by video control apparatus
Preview on combination, and confirm whether video data is normal, until confirming that the aisled signal of institute can be played normally just in preview
The system is consigned into client.In process of the present invention is realized, inventor has found that at least there are the following problems in the prior art：By
It is limited in the performance of system, the video of each energy preview of joined screen system is limited, therefore, is needed for the video on roads up to ten thousand up to a hundred
The ability complete all videos of preview, the magnanimity signal in face of being up to tens thousand of roads, to by manually to per signal all the way are opened secondaryly
Preview one by one is carried out to confirm, it is necessary to expend substantial amounts of manpower and time.Therefore, it is necessary to find it is a kind of can be quickly to multiple videos
The device that the quality of signal path is detected.
The content of the invention
Based on this, quality determining method, apparatus and system the present invention provides video signal path can realize multiple regard
The quality of frequency signal path is used for quickly detecting.
The content of the embodiment of the present invention is as follows：
A kind of quality determining method of video signal path, including：Multiple first videos are sent to multiple video controls
Equipment；Each video control apparatus is made to handle respectively first video, obtains the second video；First video is
For the video of combination；Video request signal is sent respectively to the multiple video control apparatus；The video request signal
For the multiple video control apparatus to be asked to send second video respectively；The multiple video control apparatus is received to send
Multiple second videos；The access that video passes through during from the first video of transmission to the second video of reception forms corresponding regard
Frequency signal path；First video with the multiple second video is compared respectively, obtains the multiple second video
Quality measurements；Multiple corresponding vision signals are obtained according to the quality measurements of the multiple second video to lead to
The quality measurements on road.
In one of the embodiments, it is further comprising the steps of：It records to the video control apparatus and sends video request
The first time of signal and respectively record receive the multiple second video corresponding multiple second times.
It is in one of the embodiments, described that first video is compared respectively with the multiple second video,
The step of obtaining the quality measurements of the multiple second video, including：By the video frame rate of first video respectively with
The video frame rate of each second video is compared, if the video frame rate of second video is less than the video of first video
Frame per second, then the quality measurements of corresponding second video are video cardton.
It is in one of the embodiments, described that first video is compared respectively with the multiple second video,
The step of obtaining the quality measurements of the multiple second video, including：Each frame sequence of first video is obtained respectively
The first yuv data and each second video of row correspond to the second yuv data of frame sequence, calculate first yuv data and
Each YUV differences are compared with default YUV threshold values respectively for the YUV differences of second yuv data；If the YUV is poor
Value is more than the default YUV threshold values, then the quality measurements of corresponding second video are excessive for vedio color difference.
It is in one of the embodiments, described that first video is compared respectively with the multiple second video,
The step of obtaining the quality measurements of the multiple second video, including：The first time and each second are calculated respectively
Each time difference is compared the time difference of time with default time difference threshold value；If the time difference is more than institute
Default time difference threshold value is stated, then the quality measurements of second video are delayed excessive for video.
In one of the embodiments, in one of the embodiments, it is described by first video respectively with it is described more
A second video is compared, the step of obtaining the quality measurements of the multiple second video, including：If a certain second regards
Video frame rate, YUV differences and/or the time difference of frequency are met the requirements, then second video corresponding video signal path
Quality measurements are to meet the requirements.
A kind of quality determining method of video signal path, comprises the following steps：Quality of reception detection device send the
One video handles first video, obtains the second video；The video request letter that quality of reception detection device is sent
Number, second video is sent to the quality detection device according to the video request signal；So that the quality testing dress
It puts and first video is compared with second video, obtain the quality measurements of second video；According to institute
The quality measurements for stating the second video obtain the quality measurements of corresponding video signal path.
A kind of quality determining method of video signal path, comprises the following steps：Quality detection device is regarded multiple first
It takes place frequently and gives multiple video control apparatus；Each video control apparatus is respectively handled first video, obtains second
Video；Quality detection device sends video request signal respectively to the multiple video control apparatus；The video request signal
For the multiple video control apparatus to be asked to send second video respectively；Each video control apparatus receives described regard
After frequency request signal second video is sent to quality detection device respectively；Quality detection device receives the multiple video control
Multiple second videos that control equipment is sent；The access structure that video passes through during from the first video of transmission to the second video of reception
Into corresponding video signal path；First video is compared quality detection device with the multiple second video, obtains
To the quality measurements of the multiple second video；It is multiple right to be obtained according to the quality measurements of the multiple second video
The quality measurements for the video signal path answered.
Correspondingly, the embodiment of the present invention provides a kind of quality detection device of video signal path, including：Video imports mould
Block, for multiple first videos to be sent to multiple video control apparatus；Make each video control apparatus respectively to described first
Video is handled, and obtains the second video；First video is the video for combination；Request signal sending module is used
In sending video request signal respectively to the multiple video control apparatus；The video request signal is the multiple for asking
Video control apparatus sends second video respectively；First video reception module sets for receiving the multiple video control
The second video that preparation is sent；The access that video passes through during from the first video of transmission to the second video of reception forms corresponding
Video signal path；Video comparing module for first video to be compared respectively with the multiple second video, obtains
To the quality measurements of the multiple second video；It is multiple right to be obtained according to the quality measurements of the multiple second video
The quality measurements for the video signal path answered.
In one of the embodiments, time recording module is further included, is sent for recording to the video control apparatus
The first time of video request signal and respectively record receive the multiple second video corresponding multiple second times.
In one of the embodiments, the video comparing module is additionally operable to the video frame rate of first video point
Video frame rate not with each second video is compared, if the video frame rate of second video is less than first video
Video frame rate, then the quality measurements of corresponding second video are video cardton.
In one of the embodiments, the video comparing module is additionally operable to obtain each of first video respectively
First yuv data of frame sequence and each second video correspond to the second yuv data of frame sequence, calculate the first YUV numbers
According to the YUV differences with second yuv data, each YUV differences are compared with default YUV threshold values respectively；It is if described
YUV differences are more than the default YUV threshold values, then the quality measurements of corresponding second video are vedio color difference
It is excessive.
In one of the embodiments, the video comparing module is additionally operable to calculate first time and each respectively
Each time difference is compared the time difference of second time with default time difference threshold value；If the time difference is big
In the default time difference threshold value, then the quality measurements of second video are excessive for video delay.
In one of the embodiments, the video comparing module, if be additionally operable to the video frame rate of a certain second video,
YUV differences and/or time difference are met the requirements, then the quality measurements of the corresponding video signal path of second video are
It meets the requirements.
A kind of video control apparatus, including：Video reception module regards for quality of reception detection device is sent first
Frequently, first video is handled, obtains the second video；Video returns to module, is sent for quality of reception detection device
Video request signal, second video is sent to the quality detection device according to the video request signal；So that institute
It states quality detection device first video is compared with second video, obtains the quality testing of second video
As a result；The quality measurements of corresponding video signal path are obtained according to the quality measurements of second video.
A kind of quality detecting system of video signal path, including：Quality detection device and multiple video control apparatus；Institute
Quality detection device is stated, for importing the first video, multiple first videos are sent to the multiple video control apparatus；
First video is the video for combination；The multiple video control apparatus, for respectively to first video into
Row processing, obtains the second video；The quality detection device is additionally operable to send video respectively to the multiple video control apparatus
Request signal；The video request signal is used to that the multiple video control apparatus to be asked to send second video respectively；Institute
Multiple video control apparatus are stated, is additionally operable to receive after the video request signal and sends described the to quality detection device respectively
Two videos；The quality detection device is additionally operable to receive multiple second videos that the multiple video control apparatus is sent；By institute
It states the first video to be compared with the multiple second video, obtains the quality measurements of the multiple second video；According to
The quality measurements of the multiple second video obtain the quality measurements of multiple corresponding video signal paths；From transmission
First video forms corresponding video signal path to the access that video during the second video passes through is received.
A kind of computer readable storage medium, is stored thereon with computer program, which realizes when being executed by processor
The step of method described above, passes through the computer program of its storage.
A kind of computer equipment can be run on a memory and on a processor including memory, processor and storage
The step of computer program, the processor realizes method described above when performing described program.
Known original video is sent to multiple video control apparatus by above-mentioned technical proposal, quality detection device, these
Video control apparatus handles the video.Quality detection device need to video signal path carry out quality testing when,
Video request signal is sent to these video control apparatus respectively, making these video control apparatus, video is sent back by treated
Come.Multiple videos of reception are compared quality detection device with original video respectively, it is possible to from quality detection device
The quality for being issued to the video signal path that quality detection device reception video is passed through is judged, so as to detect that video is believed
Number transmission process problem.Disposably multiple video signal paths can be detected, detection efficiency is high.
Description of the drawings
Fig. 1 is the video windowing schematic diagram of combination；
Fig. 2 is the schematic diagram of vision signal receive-transmit system；
Fig. 3 is the schematic diagram of the application scenarios of vision signal receive-transmit system；
Fig. 4 is the schematic flow chart of the quality determining method of video signal path in an embodiment；
Fig. 5 is the schematic flow chart of the quality determining method of video signal path in another embodiment；
Fig. 6 is the schematic flow chart of the quality determining method of video signal path in another embodiment；
Fig. 7 is the structure diagram of vision signal detecting system scheme in an embodiment；
Fig. 8 is the schematic diagram of the application scenarios of vision signal receive-transmit system in an embodiment；
Fig. 9 is the structure diagram of the quality detection device of video signal path in an embodiment；
Figure 10 is the structure diagram of video control apparatus in an embodiment.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
At present, joined screen system is had been applied to including multiple system regions such as traffic, electric power, security.By will be all kinds of
Application software and monitor video picture are launched to monitoring of the people to Various types of data is greatly facilitated on combination, to realize data
The fast deployment of analysis and resource provides possibility.
In practical applications, joined screen system can access various signals, including digital signal, analog signal,
Desktop signals etc..According to the actual needs of different system, a joined screen system may be equipped with tens of roads to tens of thousands of roads etc.
Various types of signal.At system building initial stage, the engineers and technicians of combination producer generally require will believe one by one per video all the way
Number be all opened to preview on combination (carries out preview as shown in Figure 1,8 road signals are reached on two on combination display screens
Display), and confirm whether video data is normal, until confirming that all vision signals can be played normally in preview, it just can confirm that institute
Have that video signal path is all normal, so system could be consigned to client.
And in face of being up to the magnanimity signal on tens thousand of roads, confirm to carry out preview one by one to every signal all the way by manually,
It needs to expend substantial amounts of manpower and time.Simultaneously as the performance limitation of system, the signal of each energy preview of joined screen system are
Limited.Such as, if single screen can only 2 road signal of preview simultaneously, for a total of 24 of 4 × 6 system shown in FIG. 1 screen composition, often
It is secondary just can only simultaneously 48 road signal of preview.For road signals up to ten thousand, then need manually to be full of hundreds of full frame signals progress manually
Inspection could be completed.
Due to checking that signal is required for expending substantial amounts of energy every time, in routine use of the user after online implementing
Seldom signal can be inspected periodically again, cause just to find in actual use certain road signal there are no signal data or
The problems such as video cardton, brings great inconvenience for daily use.
Fig. 2 is the schematic diagram of common vision signal receive-transmit system.As shown in Fig. 2, vision signal receive-transmit system includes regarding
Frequency control device and video signal displaying apparatus.Wherein video control apparatus refers to that video to be shown is flowed before display
The equipment of warp is responsible for video signal displaying apparatus outputting video streams data, can be setting of being acquired, handle to video etc.
It is standby.Video signal displaying apparatus refers to the equipment for showing video, the video that video signal displaying apparatus will receive
It is shown after flow data decoding.In common joined screen system, video control apparatus includes the IP such as camera, IP collecting cassettes
Signalling arrangement, can also be including video is flowed before video is sent to video signal displaying apparatus in other joined screen systems
The other equipment of warp；And video signal displaying apparatus can be display wall, display wall shows that receive various regard on the screen
Frequency signal picture.Specifically, which is camera.
In common vision signal receive-transmit system, video control apparatus is for acquisition video data in real time and externally sends
Video data, the video data that each video control apparatus is collected is mutually different, therefore vision signal within the system
The video data that display device is received from each video control apparatus is different, while video content is unpredictable.Such as
Fruit directly gathers video by video control apparatus and carries out quality testing to the video of the acquisition and then detect video signal path
Quality if, the quality of the video gathered by that can not know video control apparatus cannot be regarded to original well
Frequency and process transmission, treated, and video quality is compared, therefore also can not judge whether video quality changes.Base
In this, the embodiment of the present invention detects the quality of video signal path by known video, i.e., by video guide known to one section
Enter and be sent to video control apparatus and then the quality of video signal path is detected.
The corresponding application scenarios schematic diagram of vision signal receive-transmit system is as shown in figure 3, camera and video acquisition box etc.
Video control apparatus 301 externally exports the video data of different pictures by network respectively.As video signal displaying apparatus
The video data received on display wall is decoded and shown by mosaic screen 302.Referred in Fig. 3 by the vision signal of network transmission
It is IP vision signals.
Since the video pictures content that different video control apparatus is collected is different, working as needs to some accesses
Vision signal can only check picture per signal all the way when being detected one by one by manually naked eyes, it is time-consuming and laborious.For this purpose, this
Inventive embodiments provide a kind of quality determining method and device of video signal path, can be that each video control apparatus is defeated
Enter known vision signal, the video that video control apparatus returns is compared with original video, and then show that video is believed
The quality measurements of number access.It is described in detail individually below.
As shown in figure 4, the schematic flow chart of the quality determining method for the video signal path of an embodiment.This implementation
Example is illustrated by taking quality detection device end as an example, and the quality determining method for the video signal path that the embodiment provides is main
Including step S410 to step S440, detailed description are as follows：
S410, multiple first videos are sent to multiple video control apparatus；Make each video control apparatus respectively to institute
It states the first video to be handled, obtains the second video；First video is the video for combination.
Optionally, further included before the first video being sent to video control apparatus and the first video is imported into quality control dress
The process put.By way of importing video and the video be sent to video control apparatus as known video, Ke Yi
Video relatively knows the relevant informations such as video frame rate, YUV differences and the time difference of video before, ensures that video compares reliable
Property.
Optionally, quality detection device is the equipment being detected to the quality of video signal path, is responsible for video sample
Product import and are sent to video control apparatus, ask video to video control apparatus and carry out mass ratio pair to the video of return,
Realize the detection to video signal path quality.The quality detection device can be arranged in video signal displaying apparatus, also may be used
With individualism.
Optionally, vision signal can be a variety of according to the mode and signal format of signal transmission：Such as common computer master
What is transmitted between machine and display wall simulates VGA signals and number DVI signals, the signal of optical fiber transmission, the simulation with the transmission of BNC lines
Signal and the IP signals transmitted using network (including cable network and wireless network).IP signals everywhere may be used in we live
See, such as phone video call, vehicle-mounted camera, security protection camera signals etc..Specifically, the video in the embodiment of the present invention refers to
Be IP signals.Wherein, video sample (the first video) can be that still frame can also dynamic menu.
Alternatively it is also possible to the first different videos is sent to different video control apparatus.
Optionally, the process that video control apparatus handles the first video can be video is encoded, editing
Deng the processing cannot impact video quality, i.e., image quality, color of video etc. cannot be made to sell of one's property changing.Such ability
Show that video signal path whether there is problem by the comparison of video quality.
S420, video request signal is sent respectively to the multiple video control apparatus；The video request signal is used for
The multiple video control apparatus is asked to send second video respectively.
Optionally, video request signal includes the relevant information of the first video, and video control apparatus is according to video request
The relevant information of the first video is with regard to that can find corresponding second video in signal, and then can second video be returned to quality
Detection device.
After multiple video control apparatus send the first video, it is detected needing the quality to video signal path
When, can video request signal once be sent to multiple video control apparatus, ask these video control apparatus by treated
First video (the second video) returns to quality detection device.And then realize the purpose being once detected to multiple signals.
S430, multiple second videos that the multiple video control apparatus is sent are received；From the first video is sent to reception
The access that video passes through during second video forms corresponding video signal path.
Quality detection device sends video request signal respectively to each video control apparatus, and each video control is asked to set
Back-up does not send back treated second video to come.
Wherein, video signal path refers to being sent to video control apparatus from video, and video control apparatus is to reception
Video is handled and is returned to the access that the process video of quality detection device is passed through.The access mainly includes video and controls
Equipment, therefore the quality determining method of video signal path provided in an embodiment of the present invention can carry out matter to video control apparatus
Amount detection.
S440, first video with the multiple second video is compared respectively, obtains the multiple second and regard
The quality measurements of frequency；Multiple corresponding vision signals are obtained according to the quality measurements of the multiple second video
The quality measurements of access.
Second video is the video that the first video obtains after video signal path.If the video signal path is not asked
Topic, then the quality of the video after the access and original video should be consistent or only little difference；And if should
Video signal path can then influence the quality of the video transmitted on the access there are quality problems, therefore, the second video with
The first original video quality can there are bigger differences.Therefore, the first video with the second video is compared and can determine whether
The video signal path whether there is quality problems.
In the present embodiment, quality detection device sends the first video to video control apparatus, and video signal transmission access passes
Original video sample and the video after transmission are compared, are regarded according to two by the defeated video sample, quality detection device
The quality condition of frequency can judge the quality of video signal path, whereby it can be detected that vision signal is being handled and passed
The defeated process problem.Meanwhile quality detection device can connect one or more video control apparatus, will be sent out with a video
It is sent in multiple video control apparatus, and passes through what video request module was specified to each video control apparatus connected request
Video sample data.Mode in this way can be with the quality of one-time detection multi-channel video signal access.Work as video control apparatus
When multiple second videos are returned, can quality testing be carried out to multiple signals simultaneously, reduce time cost.To multiple signals into
Time needed for the whole process of row quality testing can almost complete in moment, can significantly save quality testing process
Time.
In one embodiment, it is described that first video is compared respectively with the multiple second video, obtain institute
The step of stating the quality measurements of multiple second videos, including：By the video frame rate of first video respectively with each
The video frame rate of two videos is compared, if the video frame rate of second video is less than the video frame rate of first video,
Then the quality measurements of corresponding second video are video cardton.
The present embodiment passes through the comparison of the first video and the video frame rate of the second video, it may be determined that whether the second video
Interim card, and then may determine that video control apparatus whether there is the factor for causing video cardton, if so, video signal path is deposited
In problem.
In one embodiment, it is described that first video is compared respectively with the multiple second video, obtain institute
The step of stating the quality measurements of multiple second videos, including：The of each frame sequence of first video is obtained respectively
One yuv data and each second video correspond to the second yuv data of frame sequence, calculate first yuv data and described the
Each YUV differences are compared with default YUV threshold values respectively for the YUV differences of two yuv datas；If the YUV differences are more than
The default YUV threshold values, then the quality measurements of corresponding second video are excessive for vedio color difference.
Optionally, the process of the pixel number that vedio color difference is excessive in the frame sequence for calculating video is further included, when
The excessive pixel number of vedio color difference ratio shared in entire video is more than a certain default pixel ratio threshold
During value, it is believed that video goes wrong.The default pixel proportion threshold value can be 5%, 10% or other values.
Optionally, default YUV threshold values can be 10%, 15%, 20%, or other values.Specifically, it is default
YUV threshold values are 15%.
Further, the scope of YUV values is 0~255, if the yuv data of a certain pixel and the first video in the second video
The difference of the yuv data of middle respective pixel is more than 15%, then it is assumed that the YUV values of the pixel change；If a video is drawn
The yuv data of more than 10% pixel changes in the total pixel in face, then it is assumed that vedio color difference mistake occurs in the picture
The problem of the problem of big, i.e. flower screen or blank screen.
In the present embodiment, pass through the ratio of the YUV differences in the first video and the second sequence of frames of video and default YUV threshold values
Compared with, it may be determined that it is excessive whether each frame sequence color of the second video changes, and then whether may determine that video control apparatus
In the presence of the factor that vedio color is caused to change, if so, there are problems for video signal path.
In one embodiment, it is further comprising the steps of：It records to the video control apparatus and sends video request signal
First time T1 and respectively record receive the corresponding multiple second time T2 of the multiple second video.
The present embodiment record sends the first time T1 of video request signal and record receives the more of the second video respectively
A second time T2 is recognized that whether video control apparatus is sending the very long of video request signal by the two times
The second video is just returned into quality detection device after a period of time, and then judges whether video signal path can cause video
Delay.
In one embodiment, it is described that first video is compared respectively with the multiple second video, obtain institute
The step of stating the quality measurements of multiple second videos, including：The first time and each second time are calculated respectively
Each time difference is compared time difference with default time difference threshold value；If the time difference is more than described default
Time difference threshold value, then the quality measurements of second video for video be delayed it is excessive.
Optionally, default time difference threshold value can be 500ms (millisecond), 1000ms, 2000ms, or other when
Between.
Specifically, for monitor video, the delay of 1000ms generally just can reach the requirement of user, if being delayed over
1000ms can then produce bigger effect the application under the occasions such as video conference.And for the video monitoring of security protection occasion from the point of view of,
The delay user of below 2000ms can receive.Therefore default time difference threshold value can be arranged to 500 according to practical matter~
Time in 1000ms, it can also be other times certainly.
In the present embodiment, by the comparison of the time difference of the first video and the second video and default time difference threshold value,
It is excessive can to determine whether the second video is delayed in transmission process, and then may determine that video control apparatus whether there is and cause
The factor of video delay, if so, there are problems for video signal path.
In one embodiment, it is described that first video is compared respectively with the multiple second video, obtain institute
The step of stating the quality measurements of multiple second videos, including：If the video frame rate of a certain second video, YUV differences and/or
Time difference is met the requirements, then the quality measurements of the corresponding video signal path of second video are to meet the requirements.
In the present embodiment, the quality of video signal path is judged according to the quality comparable situation of the first video and the second video
Testing result meets the requirements.One or more of video frame rate, YUV differences and time difference when the second video are met the requirements
When, judge that the quality measurements of video signal path meet the requirements, without the problem.For the feelings that quality requirement is stringent
Condition, can by adjusting the mode of threshold value, go wrong but less problematic video signal path be also classified as it is undesirable.
As shown in figure 5, the schematic flow chart of the quality determining method for the video signal path of an embodiment.This implementation
Example is illustrated by taking video control apparatus end as an example, and the quality determining method for the video signal path that the embodiment provides is main
Including step S510 to step S520, detailed description are as follows：
The first video that S510, quality of reception detection device are sent, handles first video, obtains second and regard
Frequently.
In this step, the video that video control apparatus quality of reception detection device is sent, and video is handled, such as
Video is encoded etc..
The video request signal that S520, quality of reception detection device are sent, according to the video request signal to the matter
Amount detecting device sends second video；So that the quality detection device by first video and second video into
Row compares, and obtains the quality measurements of second video；It is corresponded to according to the quality measurements of second video
Video signal path quality measurements.
In this step, video control apparatus will regard after the video request signal of quality detection device transmission is received
The second video that frequency request signal is directed to returns to quality detection device.Complete the video transmitting procedure of video signal path.
The present embodiment video signal transmission tunnel video sample, video control apparatus handle video, and
The second obtained video is returned into quality detection device, quality detection device is by original video sample and after transmission
Video is compared, and the quality of video signal path can be judged according to the quality condition of two videos, so as to examine
Vision signal is measured in processing and the transmission process problem.Wherein video control apparatus is more, and multiple vision signals are led to
Second video can be returned to quality detection device by road respectively according to video request signal.Mode in this way can be once
Detect the quality of multi-channel video signal access.The time carried out to multiple signals needed for the whole process of quality testing almost can be with
It is completed in moment, the time than manually checking required is much less, can significantly save the time.
As shown in fig. 6, the schematic flow chart of the quality determining method for the video signal path of an embodiment.This implementation
Example is illustrated by taking quality of reception detection device end as an example, the quality determining method for the video signal path that the embodiment provides
Mainly include step S610 to step S660, detailed description are as follows：
Multiple first videos are sent to multiple video control apparatus by S610, quality detection device.
S620, each video control apparatus are respectively handled first video, obtain the second video.
S630, quality detection device send video request signal respectively to the multiple video control apparatus；The video
Request signal is used to that the multiple video control apparatus to be asked to send second video respectively.
S640, each video control apparatus send institute to quality detection device respectively after receiving the video request signal
State the second video.
S650, quality detection device receive multiple second videos that the multiple video control apparatus is sent；From sending the
One video forms corresponding video signal path to the access that video during the second video passes through is received.
First video is compared with the multiple second video for S660, quality detection device, obtains described more
The quality measurements of a second video；Multiple corresponding videos are obtained according to the quality measurements of the multiple second video
The quality measurements of signal path.
In the present embodiment, quality detection device sends the first video to video control apparatus, and video signal transmission access passes
The defeated video sample, video control apparatus handle video and return to quality detection device, then quality detection device
Original video sample and the video after transmission are compared, it can be to vision signal according to the quality condition of two videos
The quality of access is judged, whereby it can be detected that vision signal in processing and the transmission process problem.Meanwhile quality
Detection device can connect one or more video control apparatus, will be sent to a video in multiple video control apparatus, and
The video sample data specified by video request module to each video control apparatus connected request.Side in this way
Formula can be with the quality of one-time detection multi-channel video signal access.It, can be with when video control apparatus returns to multiple second videos
Quality testing is carried out to multiple signals simultaneously, reduces time cost.Multiple signals are carried out needed for the whole process of quality testing
Time can almost be completed in moment, the time than manually checking required is much less, and can significantly save vision signal
The quality testing time of access.
The above method in order to better understand, the quality testing side of a video signal path of the present invention detailed below
The application example of method.Fig. 7 is the structure diagram of vision signal detecting system scheme in an embodiment.As shown in fig. 7, video is believed
Number detecting system includes quality detection device 701 and video control apparatus 301.Detailed description are as follows：
Wherein, quality detection device includes video import modul 702, video request sending module 703, the first video reception
Module 704, video comparison module 705, the first video management module 706, the first video processing module 707 and time record mould
Block.Video control apparatus includes the second video reception module 708, the second video management module 709, the second video processing module
710th, video sending module 711 and video request receiving module 712.
1) the first video is imported into quality detection device 701 by video import modul 702, and multiple described first are regarded
It takes place frequently and gives multiple video control apparatus 301；
2) the first video that 708 quality of reception detection device 701 of the second video reception module is sent sends out first video
Give the second video management module 709；Second video management module 709 is for managing video and to the second video processing module
710 transmission videos；
3) the second video processing module 710 in each video control apparatus respectively encodes first video,
Obtain the second video；
4) video request sending module 703 sends video request signal respectively to multiple video control apparatus 301；The video
Include the information of the first video in request signal；Time recording module record video request hair in quality detection device 701
Module 703 is sent to send the first time T1 of video request signal to the video control apparatus；
5) video request receiving module 712 receives the video request signal, and the second video processing module 710 is according to the video
The information of the first video in request signal sends encoded the second obtained video to video sending module 711；
5) the second video is sent to quality detection device 701 by video sending module 711；
6) the first video reception module 704 receives second video, which is sent to the first video processing mould
Block 707；Time recording module records the second time T2 that the first video reception module 704 receives second video；
7) the first video processing module 707 is decoded the second video, and decoded second video is sent to video
Comparison module 705；At this point, the first video is also sent to video comparison module 705 by the first video management module 706；
8) the first video and the second video are compared video comparison module 705, obtain the quality testing of the second video
As a result, specific comparison process is as follows：
First, video frame rate of the video frame rate of first video respectively with each second video is compared, if
The video frame rate of second video is less than the video frame rate of first video, then the quality inspection of corresponding second video
Survey result is video cardton；
Secondly, the first yuv data of each frame sequence of first video and each second video pair are obtained respectively
The second yuv data of frame sequence is answered, calculates the YUV differences of first yuv data and second yuv data, it respectively will be each
A YUV differences are compared with default YUV threshold values；If the YUV differences are more than the default YUV threshold values, corresponding
The quality measurements of second video are excessive for vedio color difference；
Then, the time difference of the first time and each second time are calculated respectively, by each time difference and in advance
If time difference threshold value be compared；If the time difference is more than the default time difference threshold value, second video
Quality measurements for video be delayed it is excessive；
If there is no the above situation, the first videos for the video frame rate of second video, YUV differences and time difference
With the uniform quality of the second video or being not much different, therefore video signal path does not influence video quality.It is taken as that institute
The quality measurements of video signal path are stated to meet the requirements.
As shown in figure 8, quality detection device 701 is imported after video is sent to multiple videos by multiple first videos of importing
Control device 301, video control apparatus 301 are encoded to obtain the second video to first video, then again will by network
Second video returns to quality detection device 701, and quality detection device 701 carries out quality testing to the video of return, judges to regard
Frequency improves quality whether receive influence in transmission channel.
Specifically, after quality detection device 701 shown in Fig. 7 is detected each video control apparatus 301
It just can know that the second video reception module 708, the second video management module 709, second in corresponding video control apparatus 301
Whether video processing module 710 and video sending module 711 etc. are working properly.It is if working properly, then video control apparatus
What 301 signal by oneself acquisition will normally be shown on combination.Otherwise, quality detection device 701 detects some
When module operation irregularity in video control apparatus, the signal of the video control apparatus 301 itself acquisition it is encoded and
Data sending reaches joined screen system also can be abnormal.
The embodiment of the present invention has carried out video control apparatus certain improvement.As shown in fig. 7, the embodiment of the present invention regards
The video control apparatus 301 of frequency signal detection system adds video compared with existing video control apparatus (as shown in Figure 2)
Receiving module and video management module.The video data that the video control apparatus of existing script generates is the sensing by itself
Device (such as camera, CCD) acquisition generates.And the video control apparatus in the embodiment of the present invention by transformation is because can be from quality
Video sample is obtained in detection device, therefore the partial video can be considered as to " sample collected from sensor itself "
To encode and send.As can be seen that the video control apparatus by transformation is more in addition to it independently can gather video pictures
One function：Video sample file is received from quality detection device and video is handled simultaneously according to existing mode
It sends.
Based on the thought identical with the quality determining method of the video signal path in above-described embodiment, the present invention also provides
The quality detection device of video signal path, the device can be used for the quality determining method for performing above-mentioned video signal path.For
Convenient for explanation, in the structure diagram of the quality detection device embodiment of video signal path, illustrate only and the present invention
The relevant part of embodiment, it will be understood by those skilled in the art that the restriction of schematic structure not structure twin installation, can include
Some components or different components arrangement are either combined than illustrating more or fewer components.
As described in Figure 9, the quality detection device of video signal path includes video sending module 810, request signal is sent
Module 820, the first video reception module 830 and video comparing module 840.Detailed description are as follows：
Video sending module 810, for multiple first videos to be sent to multiple video control apparatus；Make each video control
Control equipment is respectively handled first video, obtains the second video；First video is the video for combination.
Request signal sending module 820, for sending video request signal respectively to the multiple video control apparatus；Institute
Video request signal is stated for the multiple video control apparatus to be asked to send second video respectively.
First video reception module 830, for receiving the second video that the multiple video control apparatus is sent；From transmission
First video forms corresponding video signal path to the access that video during the second video passes through is received.
And video comparing module 840, for first video to be compared respectively with the multiple second video
It is right, obtain the quality measurements of the multiple second video；It is obtained according to the quality measurements of the multiple second video
The quality measurements of multiple corresponding video signal paths.
The present embodiment to video control apparatus by sending the first video, the video signal transmission tunnel video sample
Product compare original video sample and the video after transmission, vision signal can be led to according to the quality condition of two videos
The quality on road is judged, whereby it can be detected that vision signal in processing and the transmission process problem.Quality testing fills
One or more video control apparatus can be connected by putting, and will be sent to a video in multiple video control apparatus, and be passed through and regard
The video sample data that frequency request module is specified to each video control apparatus connected request.Mode in this way can be with
The quality of one-time detection multi-channel video signal access.It, can be simultaneously to multichannel when video control apparatus returns to the second video
Signal carries out quality testing, reduces time cost, to the time needed for the whole process of multiple signals progress quality testing almost
It can be completed in moment, the time than manually checking required is much less.
In one embodiment, time recording module is further included, it please to video control apparatus transmission video for recording
It asks the first time of signal and record receives the multiple second video corresponding multiple second times respectively.
In one embodiment, the video comparing module, be additionally operable to by the video frame rate of first video respectively with respectively
The video frame rate of a second video is compared, if the video frame rate of second video is less than the video frame of first video
Rate, then the quality measurements of corresponding second video are video cardton.
In one embodiment, the video comparing module is additionally operable to obtain each frame sequence of first video respectively
The first yuv data and each second video correspond to the second yuv data of frame sequence, calculate first yuv data and institute
The YUV differences of the second yuv data are stated, each YUV differences are compared with default YUV threshold values respectively；If the YUV differences
More than the default YUV threshold values, then the quality measurements of corresponding second video are excessive for vedio color difference.
In one embodiment, the video comparing module, be additionally operable to calculate respectively the first time and it is each second when
Between time difference, each time difference is compared with default time difference threshold value；If the time difference is more than described
Default time difference threshold value, then the quality measurements of second video are excessive for video delay.
In one embodiment, the video comparing module, if being additionally operable to the video frame rate of a certain second video, YUV differences
And/or time difference is met the requirements, then the quality measurements of the corresponding video signal path of second video are to conform to
It asks.
As described in Figure 10, video control apparatus includes the second video reception module 910 and video returns to module 920.In detail
It is described as follows：
Second video reception module 910, for the first video that quality of reception detection device is sent, to first video
It is handled, obtains the second video.
And video returns to module 920, for the video request signal that quality of reception detection device is sent, according to described
Video request signal sends second video to the quality detection device；So that the quality detection device is by described first
Video is compared with second video, obtains the quality measurements of second video；According to second video
Quality measurements obtain the quality measurements of corresponding video signal path.
The embodiment of the present invention also provides a kind of quality detecting system of video signal path, the matter of the video signal path
Amount detection systems include quality detection device and multiple video control apparatus.Detailed description are as follows：
Multiple first videos for importing the first video, are sent to the multiple regard by the quality detection device
Frequency control device；First video is the video for combination；
The multiple video control apparatus for handling respectively first video, obtains the second video；
The quality detection device is additionally operable to send video request signal respectively to the multiple video control apparatus；Institute
Video request signal is stated for the multiple video control apparatus to be asked to send second video respectively；
The multiple video control apparatus is additionally operable to receive after the video request signal respectively to quality detection device
Send second video.
And the quality detection device, it is additionally operable to receive that the multiple video control apparatus is sent multiple second regards
Frequently；First video with the multiple second video is compared, obtains the quality testing knot of the multiple second video
Fruit；The quality testing knot of multiple corresponding video signal paths is obtained according to the quality measurements of the multiple second video
Fruit；The access that video passes through during from the first video of transmission to the second video of reception forms corresponding video signal path.
The present embodiment to video control apparatus by sending the first video, the video signal transmission tunnel video sample
Product compare original video sample and the video after transmission, vision signal can be led to according to the quality condition of two videos
The quality on road is judged, whereby it can be detected that vision signal in processing and the transmission process problem.Quality testing fills
One or more video control apparatus can be connected by putting, and will be sent to a video in multiple video control apparatus, and be passed through and regard
The video sample data that frequency request module is specified to each video control apparatus connected request.Mode in this way can be with
The quality of one-time detection multi-channel video signal access.It, can be simultaneously to multichannel when video control apparatus returns to the second video
Signal carries out quality testing, reduces time cost, to the time needed for the whole process of multiple signals progress quality testing almost
It can be completed in moment, the time than manually checking required is much less.
It should be noted that the quality detection device of the video signal path of the present invention and the video signal path of the present invention
Quality determining method correspond, above-mentioned video signal path quality determining method embodiment illustrate technical characteristic
And its advantage, suitable for the embodiment of the quality detection device of video signal path, particular content can be found in the present invention
Narration in embodiment of the method, details are not described herein again, hereby give notice that.
In addition, in the embodiment of the quality detection device of the video signal path of above-mentioned example, each program module is patrolled
Division is collected to be merely illustrative of, can be as needed in practical application, such as configuration requirement or software for corresponding hardware
Realization convenient consideration, above-mentioned function distribution is completed by different program modules, i.e., by the matter of the video signal path
The internal structure of amount detecting device is divided into different program modules, to complete all or part of function described above.
It will appreciated by the skilled person that realizing all or part of flow in above-described embodiment method, being can
Relevant hardware to be instructed to complete by computer program, the program can be stored in a computer-readable storage and be situated between
In matter, production marketing or use are independent.The more specific example (non-exhaustive list) of computer-readable medium includes
Below：Electrical connection section (electronic device) with one or more wiring, portable computer diskette box (magnetic device), arbitrary access
Memory (RAM), read-only memory (ROM), erasable edit read-only storage (EPROM or flash memory), optical fiber dress
It puts and portable optic disk read-only storage (CDROM).It can be printed on it in addition, computer-readable medium can even is that
The paper of described program or other suitable media, because can be for example by carrying out optical scanner to paper or other media, then
It is handled electronically to obtain described program into edlin, interpretation or if necessary with other suitable methods, then by it
It is stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combination thereof.Above-mentioned
In embodiment, software that multiple steps or method can in memory and by suitable instruction execution system be performed with storage
Or firmware is realized.If for example, with hardware come realize in another embodiment, can be under well known in the art
Any one of row technology or their combination are realized：With for the logic gates to data-signal realization logic function
Discrete logic, have suitable combinational logic gate circuit application-specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
It should be noted that the term " first second the 3rd " involved by the embodiment of the present invention is only to be that difference is similar
Object, do not represent the particular sorted for object, it is possible to understand that ground, " Yi Ers the 3rd " can be in the case of permission
Exchange specific order or precedence.It should be appreciated that the object that " first second the 3rd " is distinguished in the appropriate case can be mutual
It changes, so that the embodiment of the present invention described herein can be real with the order in addition to those for illustrating or describing herein
It applies.
The term " comprising " and " having " of the embodiment of the present invention and their any deformations, it is intended that cover non-exclusive
Comprising.Such as contain series of steps or the process, method, system, product or equipment of (module) unit are not limited to
The step of listing or unit, but optionally further include the step of not listing or unit or optionally further include for these
The intrinsic other steps of process, method, product or equipment or unit.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, it is impossible to be interpreted as to the scope of the claims of the present invention
Limitation.It should be pointed out that for those of ordinary skill in the art, without departing from the inventive concept of the premise,
Various modifications and improvements can be made, these belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention
It should be determined by the appended claims.
Claims (10)
1. a kind of quality determining method of video signal path, which is characterized in that comprise the following steps：
Multiple first videos are sent to multiple video control apparatus；Make each video control apparatus respectively to first video
It is handled, obtains the second video；First video is the video for combination；
Video request signal is sent respectively to the multiple video control apparatus；The video request signal is described more for asking
A video control apparatus sends second video respectively；
Receive multiple second videos that the multiple video control apparatus is sent；From the first video is sent to the second video of reception
The access that video passes through in the process forms corresponding video signal path；
First video with the multiple second video is compared respectively, obtains the quality inspection of the multiple second video
Survey result；The quality of multiple corresponding video signal paths is obtained according to the quality measurements of the multiple second video
Testing result.
2. the quality determining method of video signal path according to claim 1, which is characterized in that further include following step
Suddenly：
It records and sends the first time of video request signal to the video control apparatus and record receives the multiple the respectively
Two videos corresponding multiple second times；
It is described that first video is compared respectively with the multiple second video, obtain the matter of the multiple second video
The step of measuring testing result, including：
Video frame rate of the video frame rate of first video respectively with each second video is compared, if described second regards
The video frame rate of frequency be less than first video video frame rate, then the quality measurements of corresponding second video be regarding
Frequency interim card；
And/or
The first yuv data and each second video for obtaining each frame sequence of first video respectively correspond to frame sequence
Second yuv data calculates the YUV differences of first yuv data and second yuv data, respectively by each YUV differences with
Default YUV threshold values are compared；If the YUV differences are more than the default YUV threshold values, corresponding second video
Quality measurements for vedio color difference it is excessive；
And/or
The time difference of the first time and each second time are calculated respectively, by each time difference and default time difference
Threshold value is compared；If the time difference is more than the default time difference threshold value, the quality testing of second video
As a result it is delayed for video excessive；
If the video frame rate of a certain second video, YUV differences and/or time difference are met the requirements, second video corresponds to
Video signal path quality measurements to meet the requirements.
3. a kind of quality determining method of video signal path, which is characterized in that comprise the following steps：
The first video that quality of reception detection device is sent, handles first video, obtains the second video；
The video request signal that quality of reception detection device is sent, according to the video request signal to the quality detection device
Send second video；So that first video is compared the quality detection device with second video, obtain
To the quality measurements of second video；Corresponding vision signal is obtained according to the quality measurements of second video
The quality measurements of access.
4. a kind of quality determining method of video signal path, which is characterized in that comprise the following steps：
Multiple first videos are sent to multiple video control apparatus by quality detection device；
Each video control apparatus is respectively handled first video, obtains the second video；
Quality detection device sends video request signal respectively to the multiple video control apparatus；The video request signal is used
Second video is sent respectively in asking the multiple video control apparatus；
Each video control apparatus regards after receiving the video request signal to quality detection device transmission described second respectively
Frequently；
Quality detection device receives multiple second videos that the multiple video control apparatus is sent；From the first video is sent to connecing
It receives the access that video passes through during the second video and forms corresponding video signal path；
First video is compared quality detection device with the multiple second video, obtains the multiple second video
Quality measurements；Multiple corresponding video signal paths are obtained according to the quality measurements of the multiple second video
Quality measurements.
5. a kind of quality detection device of video signal path, which is characterized in that including：
Video sending module, for multiple first videos to be sent to multiple video control apparatus；Make each video control apparatus
First video is handled respectively, obtains the second video；First video is the video for combination；
Request signal sending module, for sending video request signal respectively to the multiple video control apparatus；The video
Request signal is used to that the multiple video control apparatus to be asked to send second video respectively；
First video reception module, for receiving the second video that the multiple video control apparatus is sent；It is regarded from sending first
Frequency forms corresponding video signal path to the access that video during the second video passes through is received；
Video comparing module for first video to be compared respectively with the multiple second video, obtains described more
The quality measurements of a second video；According to the quality measurements of the multiple second video obtain it is multiple it is corresponding described in
The quality measurements of video signal path.
6. the quality detection device of video signal path according to claim 5, which is characterized in that further include time record
Module, for record to the video control apparatus send video request signal first time and respectively record receive it is described more
A second video corresponding multiple second times；
The video comparing module,
It is additionally operable to video frame rate of the video frame rate of first video respectively with each second video being compared, if described
The video frame rate of second video is less than the quality testing knot of the video frame rate, then corresponding second video of first video
Fruit is video cardton；
And/or
The first yuv data and each second video for obtaining each frame sequence of first video respectively correspond to frame sequence
Second yuv data calculates the YUV differences of first yuv data and second yuv data, respectively by each YUV differences with
Default YUV threshold values are compared；If the YUV differences are more than the default YUV threshold values, corresponding second video
Quality measurements for vedio color difference it is excessive；
And/or
The time difference of the first time and each second time are calculated respectively, by each time difference and default time difference
Threshold value is compared；If the time difference is more than the default time difference threshold value, the quality testing of second video
As a result it is delayed for video excessive；
If the video frame rate of a certain second video, YUV differences and/or time difference are met the requirements, second video corresponds to
Video signal path quality measurements to meet the requirements.
7. a kind of video control apparatus, which is characterized in that including：
Second video reception module, for the first video that quality of reception detection device is sent, at first video
Reason, obtains the second video；
Video returns to module, for the video request signal that quality of reception detection device is sent, according to the video request signal
Second video is sent to the quality detection device；So that the quality detection device is by first video and described the
Two videos are compared, and obtain the quality measurements of second video；According to the quality measurements of second video
Obtain the quality measurements of corresponding video signal path.
8. a kind of quality detecting system of video signal path, which is characterized in that including：Quality detection device and multiple video controls
Control equipment；
Multiple first videos for importing the first video, are sent to the multiple video control by the quality detection device
Control equipment；First video is the video for combination；
The multiple video control apparatus for handling respectively first video, obtains the second video；
The quality detection device is additionally operable to send video request signal respectively to the multiple video control apparatus；It is described to regard
Frequency request signal is used to that the multiple video control apparatus to be asked to send second video respectively；
The multiple video control apparatus is additionally operable to send to quality detection device respectively after receiving the video request signal
Second video；
The quality detection device is additionally operable to receive multiple second videos that the multiple video control apparatus is sent；By described in
First video is compared with the multiple second video, obtains the quality measurements of the multiple second video；According to institute
The quality measurements for stating multiple second videos obtain the quality measurements of multiple corresponding video signal paths；From sending the
One video forms corresponding video signal path to the access that video during the second video passes through is received.
9. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is held by processor
The step of Claims 1-4 any the method is realized during row.
10. a kind of computer equipment including memory, processor and stores the meter that can be run on a memory and on a processor
Calculation machine program, which is characterized in that the processor realizes the step of Claims 1-4 any the method when performing described program
Suddenly.
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| CN101984665A (en) * | 2010-10-29 | 2011-03-09 | 深圳市同洲电子股份有限公司 | Video transmission quality evaluating method and system |
| CN105472385A (en) * | 2015-11-26 | 2016-04-06 | 深圳创维数字技术有限公司 | Video decoding and image output quality detection method and system |
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| CN101984665A (en) * | 2010-10-29 | 2011-03-09 | 深圳市同洲电子股份有限公司 | Video transmission quality evaluating method and system |
| CN105472385A (en) * | 2015-11-26 | 2016-04-06 | 深圳创维数字技术有限公司 | Video decoding and image output quality detection method and system |
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