CN108093252B - Method, device and system for detecting quality of video signal path - Google Patents

Method, device and system for detecting quality of video signal path Download PDF

Info

Publication number
CN108093252B
CN108093252B CN201711424285.1A CN201711424285A CN108093252B CN 108093252 B CN108093252 B CN 108093252B CN 201711424285 A CN201711424285 A CN 201711424285A CN 108093252 B CN108093252 B CN 108093252B
Authority
CN
China
Prior art keywords
video
quality detection
videos
detection device
quality
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201711424285.1A
Other languages
Chinese (zh)
Other versions
CN108093252A (en
Inventor
叶伯洪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vtron Group Co Ltd
Original Assignee
Vtron Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vtron Group Co Ltd filed Critical Vtron Group Co Ltd
Priority to CN201711424285.1A priority Critical patent/CN108093252B/en
Publication of CN108093252A publication Critical patent/CN108093252A/en
Application granted granted Critical
Publication of CN108093252B publication Critical patent/CN108093252B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

The invention relates to a method, a device and a system for detecting the quality of a video signal channel, and belongs to the technical field of splicing walls. The method comprises the following steps: transmitting the plurality of first videos to a plurality of video control devices; enabling each video control device to process the first video respectively to obtain a second video; transmitting video request signals to the plurality of video control devices, respectively; receiving a plurality of second videos sent by the plurality of video control devices; the paths through which the video passes from the process of sending the first video to the process of receiving the second video form corresponding video signal paths; comparing the first video with the plurality of second videos respectively to obtain quality detection results of the plurality of second videos; and further obtaining quality detection results of a plurality of corresponding video signal paths. By the technical scheme, the problem that a large amount of manpower and time are consumed when a plurality of video signal channels are checked is solved, and the quality of the plurality of video signal channels is rapidly detected.

Description

Method, device and system for detecting quality of video signal path
Technical Field
The present invention relates to the field of splicing wall technology, and in particular, to a method, an apparatus, a system, a computer-readable storage medium, and a computer device for detecting quality of a video signal path.
Background
The tiled wall system has been applied to a variety of system fields including traffic, power, security, and the like. At the initial stage of building the splicing wall system, engineering technicians of the splicing wall generally need to open each path of video signals passing through the video control equipment one by one to the splicing wall for previewing, confirm whether the video data are normal or not, and deliver the system to a client until the signals of all the paths can be previewed and played normally. In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art: due to the performance limitation of the system, the video previewed by the splicing wall system each time is limited, so that tens of thousands of videos can be previewed by opening the system hundreds of times, and in the case of massive signals of up to tens of thousands of channels, a great amount of labor and time are consumed for manually previewing and confirming each channel of signals one by one. Therefore, there is a need for a device that can quickly detect the quality of multiple video signal paths.
Disclosure of Invention
Based on the above, the invention provides a method, a device and a system for detecting the quality of video signal paths, which can realize the rapid detection of the quality of a plurality of video signal paths.
The content of the embodiment of the invention is as follows:
a method for quality detection of a video signal path, comprising: transmitting the plurality of first videos to a plurality of video control devices; enabling each video control device to process the first video respectively to obtain a second video; the first video is a video for a mosaic wall; transmitting video request signals to the plurality of video control devices, respectively; the video request signal is used for requesting the plurality of video control devices to respectively send the second videos; receiving a plurality of second videos sent by the plurality of video control devices; the paths through which the video passes from the process of sending the first video to the process of receiving the second video form corresponding video signal paths; comparing the first video with the plurality of second videos respectively to obtain quality detection results of the plurality of second videos; and obtaining a plurality of corresponding quality detection results of the video signal paths according to the quality detection results of the plurality of second videos.
In one embodiment, the method further comprises the following steps: and recording a first time for sending the video request signal to the video control equipment and respectively recording a plurality of second times corresponding to the plurality of second videos.
In one embodiment, the step of comparing the first video with the plurality of second videos to obtain quality detection results of the plurality of second videos includes: and comparing the video frame rate of the first video with the video frame rate of each second video, wherein if the video frame rate of the second video is lower than the video frame rate of the first video, the quality detection result of the corresponding second video is video blockage.
In one embodiment, the step of comparing the first video with the plurality of second videos to obtain quality detection results of the plurality of second videos includes: respectively acquiring first YUV data of each frame sequence of the first video and second YUV data of each frame sequence corresponding to the second video, calculating YUV difference values of the first YUV data and the second YUV data, and respectively comparing each YUV difference value with a preset YUV threshold value; and if the YUV difference value is larger than the preset YUV threshold value, the corresponding quality detection result of the second video is that the video color difference is too large.
In one embodiment, the step of comparing the first video with the plurality of second videos to obtain quality detection results of the plurality of second videos includes: respectively calculating time difference values of the first time and each second time, and comparing each time difference value with a preset time difference threshold value; and if the time difference value is larger than the preset time difference threshold value, the quality detection result of the second video is that the video delay is too large.
In one embodiment, the step of comparing the first video with the plurality of second videos to obtain quality detection results of the plurality of second videos includes: and if the video frame rate, the YUV difference value and/or the time difference value of a certain second video meet the requirements, the quality detection result of the video signal channel corresponding to the second video is in accordance with the requirements.
A method for detecting quality of a video signal path, comprising the steps of: receiving a first video sent by a quality detection device, and processing the first video to obtain a second video; receiving a video request signal sent by a quality detection device, and sending the second video to the quality detection device according to the video request signal; comparing the first video with the second video by the quality detection device to obtain a quality detection result of the second video; and obtaining the quality detection result of the corresponding video signal channel according to the quality detection result of the second video.
A method for detecting quality of a video signal path, comprising the steps of: the quality detection device sends the plurality of first videos to a plurality of video control devices; each video control device respectively processes the first video to obtain a second video; the quality detection device respectively sends video request signals to the plurality of video control devices; the video request signal is used for requesting the plurality of video control devices to respectively send the second videos; after receiving the video request signal, each video control device respectively sends the second video to a quality detection device; the quality detection device receives a plurality of second videos sent by the plurality of video control devices; the paths through which the video passes from the process of sending the first video to the process of receiving the second video form corresponding video signal paths; the quality detection device compares the first video with the plurality of second videos to obtain quality detection results of the plurality of second videos; and obtaining the quality detection results of a plurality of corresponding video signal paths according to the quality detection results of the plurality of second videos.
Accordingly, an embodiment of the present invention provides an apparatus for detecting quality of a video signal path, including: the video import module is used for sending a plurality of first videos to a plurality of video control devices; enabling each video control device to process the first video respectively to obtain a second video; the first video is a video for a mosaic wall; a request signal sending module, configured to send video request signals to the plurality of video control devices, respectively; the video request signal is used for requesting the plurality of video control devices to respectively send the second videos; the first video receiving module is used for receiving second videos sent by the plurality of video control devices; the paths through which the video passes from the process of sending the first video to the process of receiving the second video form corresponding video signal paths; the video comparison module is used for comparing the first video with the plurality of second videos respectively to obtain quality detection results of the plurality of second videos; and obtaining a plurality of corresponding quality detection results of the video signal paths according to the quality detection results of the plurality of second videos.
In one embodiment, the video control device further includes a time recording module, configured to record a first time when the video request signal is sent to the video control device and record a plurality of second times when the plurality of second videos are received, respectively.
In one embodiment, the video comparison module is further configured to compare the video frame rate of the first video with the video frame rate of each second video, and if the video frame rate of the second video is lower than the video frame rate of the first video, the quality detection result of the corresponding second video is video stuck.
In one embodiment, the video comparison module is further configured to obtain first YUV data of each frame sequence of the first video and second YUV data of each corresponding frame sequence of the second video, respectively, calculate a YUV difference value between the first YUV data and the second YUV data, and compare each YUV difference value with a preset YUV threshold value, respectively; and if the YUV difference value is larger than the preset YUV threshold value, the corresponding quality detection result of the second video is that the video color difference is too large.
In one embodiment, the video comparison module is further configured to calculate time difference values of the first time and each second time, and compare each time difference value with a preset time difference threshold; and if the time difference value is larger than the preset time difference threshold value, the quality detection result of the second video is that the video delay is too large.
In one embodiment, the video comparison module is further configured to determine that a quality detection result of a video signal path corresponding to a certain second video meets a requirement if a video frame rate, a YUV difference value, and/or a time difference value of the second video meets the requirement.
A video control device comprising: the video receiving module is used for receiving a first video sent by the quality detection device and processing the first video to obtain a second video; the video return module is used for receiving a video request signal sent by a quality detection device and sending the second video to the quality detection device according to the video request signal; comparing the first video with the second video by the quality detection device to obtain a quality detection result of the second video; and obtaining the quality detection result of the corresponding video signal channel according to the quality detection result of the second video.
A system for quality detection of a video signal path, comprising: a quality detection device and a plurality of video control devices; the quality detection device is used for importing a first video and sending a plurality of first videos to the plurality of video control devices; the first video is a video for a mosaic wall; the video control devices are used for processing the first video respectively to obtain a second video; the quality detection device is further configured to send video request signals to the plurality of video control devices respectively; the video request signal is used for requesting the plurality of video control devices to respectively send the second videos; the video control devices are further used for receiving the video request signals and then respectively sending the second videos to the quality detection device; the quality detection device is further configured to receive a plurality of second videos sent by the plurality of video control devices; comparing the first video with the plurality of second videos to obtain quality detection results of the plurality of second videos; obtaining quality detection results of a plurality of corresponding video signal paths according to the quality detection results of the plurality of second videos; the paths through which the video passes from the transmission of the first video to the reception of the second video constitute corresponding video signal paths.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method described above, the computer program being stored thereby.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method described above when executing the program.
According to the technical scheme, the quality detection device sends the known original video to the plurality of video control devices, and the video control devices process the video. When the quality detection device needs to detect the quality of the video signal path, the quality detection device respectively sends video request signals to the video control devices, so that the video control devices send back the processed video. The quality detection device compares the received videos with the original video respectively, so that the quality of a video signal channel through which the video is transmitted from the quality detection device to the quality detection device and received by the quality detection device can be judged, and the problem in the video signal transmission process can be detected. The detection can be carried out on a plurality of video signal paths at one time, and the detection efficiency is high.
Drawings
FIG. 1 is a schematic view of video windowing of a tiled wall;
FIG. 2 is a schematic diagram of a video signal transceiving system;
FIG. 3 is a schematic diagram of an application scenario of a video signal transceiving system;
FIG. 4 is a schematic flow chart diagram illustrating a method for quality detection of a video signal path in one embodiment;
FIG. 5 is a schematic flow chart diagram of a method for quality detection of a video signal path in another embodiment;
FIG. 6 is a schematic flow chart diagram of a method for detecting the quality of a video signal path in a further embodiment;
FIG. 7 is a schematic diagram of an embodiment of a video signal detection system;
FIG. 8 is a diagram illustrating an exemplary video transceiver system;
FIG. 9 is a block diagram of an exemplary apparatus for quality detection of video signal paths;
fig. 10 is a schematic structural diagram of a video control apparatus according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
At present, the tiled wall system has been applied to a plurality of system fields including traffic, electric power, security, and the like. By putting various application software and monitoring video pictures on the splicing wall, the method greatly facilitates the monitoring of various data by people, and provides possibility for realizing data analysis and rapid allocation of resources.
In practical application, the spliced wall system can access various signals, including digital signals, analog signals, desktop signals and the like. According to the actual needs of different systems, a spliced wall system can be provided with hundreds of paths to tens of thousands of paths of various signals. At the initial stage of system construction, the engineering technicians of the spliced wall manufacturer generally need to open each path of video signals one by one to the spliced wall for previewing (as shown in fig. 1, 8 paths of signals are opened to two display screens on the spliced wall for previewing and displaying), and confirm whether the video data is normal, and can confirm that all the video signal paths are normal until all the video signals can be previewed and played normally, so that the system can be delivered to customers.
In the case of a large number of signals up to tens of thousands, a great amount of labor and time are required to manually preview and confirm each signal one by one. Meanwhile, due to the performance limitation of the system, the signal which can be previewed each time by the spliced wall system is limited. For example, if a single screen can only preview 2 signals simultaneously, the 4 × 6 system shown in fig. 1 has a total of 24 screen components, and only 48 signals can be previewed simultaneously at a time. For tens of thousands of signals, hundreds of full-screen signals are manually opened and manually checked.
Because each time of checking the signals needs a lot of energy, the user rarely checks the signals again regularly in the daily use after the system is on line, so that the problem that no signal data or video jamming exists in a certain path of signals is found only in the actual use, and great inconvenience is brought to the daily use.
Fig. 2 is a schematic diagram of a conventional video signal transceiving system. As shown in fig. 2, the video signal transceiving system includes a video control apparatus and a video signal display apparatus. The video control device refers to a device through which a video to be displayed flows before being displayed, is responsible for outputting video stream data to the video signal display device, and can be a device for collecting and processing the video and the like. The video signal display device refers to a device that displays video, and the video signal display device decodes received video stream data and displays the decoded video stream data. In a common spliced wall system, video control equipment comprises IP signal equipment such as a camera and an IP acquisition box, and can also comprise other equipment through which a video flows before the video is sent to video signal display equipment in other spliced wall systems; the video signal display device may be a display wall that displays various received video signal pictures on a screen. Specifically, the video control apparatus is a camera.
In a common video signal transceiving system, video control devices are used for acquiring video data in real time and sending the video data to the outside, and the video data acquired by each video control device are different from each other, so that the video data received by a video signal display device from each video control device in the system are different from each other, and the video content cannot be predicted. If the video is directly collected by the video control device and the quality of the collected video is detected so as to detect the quality of a video signal channel, the quality of the video collected by the video control device cannot be known, so that the original video and the quality of the transmitted and processed video cannot be well compared, and whether the quality of the video changes or not cannot be judged. Based on this, the embodiment of the present invention detects the quality of the video signal path through the known video, that is, a known piece of video is imported and sent to the video control device to detect the quality of the video signal path.
An application scene schematic diagram corresponding to the video signal transceiving system is shown in fig. 3, and video control devices 301 such as a camera and a video capture box respectively output video data of different pictures to the outside through a network. The tiled screen 302, which is a video signal display device, decodes the received video data for display on a display wall. The video signal transmitted through the network in fig. 3 refers to an IP video signal.
Because the video picture content that different video control equipment gathered is different, consequently can only look over the picture of each way signal one by one through artifical naked eye when needing to detect the video signal of some passageway, waste time and energy. Therefore, the embodiment of the invention provides a method and a device for detecting the quality of a video signal path, which can input a known video signal for each video control device, compare a video returned by the video control device with an original video, and further obtain a quality detection result of the video signal path. The following are detailed below.
Fig. 4 is a schematic flow chart of a method for detecting quality of a video signal path according to an embodiment. In this embodiment, a quality detection device is taken as an example for explanation, and the method for detecting the quality of the video signal path provided in the embodiment mainly includes steps S410 to S440, which are explained in detail as follows:
s410, sending the plurality of first videos to a plurality of video control devices; enabling each video control device to process the first video respectively to obtain a second video; the first video is a video for a mosaic wall.
Optionally, before sending the first video to the video control apparatus, a process of importing the first video into the quality control device is further included. By introducing the video and sending the video to the video control device as the known video, the related information such as the video frame rate, the YUV difference value, the time difference value and the like of the video can be obtained before video comparison, and the reliability of the video comparison is ensured.
Optionally, the quality detection device is a device for detecting the quality of the video signal path, and is responsible for importing and sending the video sample to the video control device, requesting the video control device for the video, and performing quality comparison on the returned video to realize detection on the quality of the video signal path. The quality detection means may be provided in the video signal display device or may be present separately.
Alternatively, the video signal may be in various forms according to the signal transmission mode and the signal format: such as analog VGA signals and digital DVI signals transmitted between a general computer host and a display wall, signals transmitted through an optical fiber, analog signals transmitted through a BNC line, and IP signals transmitted using a network (including a wired network and a wireless network). The IP signals are visible everywhere in our life, such as mobile phone video calls, vehicle-mounted cameras, security camera signals and the like. Specifically, the video in the embodiment of the present invention refers to an IP signal. The video sample (first video) may be a still picture or a moving picture.
Alternatively, different first videos may also be sent to different video control devices.
Alternatively, the process of processing the first video by the video control device may be encoding, clipping, or the like of the video, and the processing cannot affect the video quality, that is, cannot change the image quality, color, or the like of the video. Therefore, whether a video signal path has a problem or not can be obtained through comparison of video quality.
S420, respectively sending video request signals to the plurality of video control devices; the video request signal is used for requesting the plurality of video control devices to respectively transmit the second videos.
Optionally, the video request signal includes information related to the first video, and the video control device can find a corresponding second video according to the information related to the first video in the video request signal, and can return the second video to the quality detection apparatus.
After sending the first video to the plurality of video control devices, when the quality of the video signal path needs to be detected, a video request signal may be sent to the plurality of video control devices at a time to request the video control devices to return the processed first video (second video) to the quality detection apparatus. Thereby realizing the purpose of detecting the multipath signals at one time.
S430, receiving a plurality of second videos sent by the plurality of video control devices; the paths through which the video passes from the transmission of the first video to the reception of the second video constitute corresponding video signal paths.
The quality detection device sends video request signals to the video control devices respectively, and requests the video control devices to send the processed second videos back respectively.
The video signal path refers to a path through which process video is transmitted from the video to the video control device, and the video control device processes the received video and returns the processed video to the quality detection device. The path mainly comprises video control equipment, so that the quality detection method of the video signal path provided by the embodiment of the invention can be used for detecting the quality of the video control equipment.
S440, comparing the first video with the plurality of second videos respectively to obtain quality detection results of the plurality of second videos; and obtaining a plurality of corresponding quality detection results of the video signal paths according to the quality detection results of the plurality of second videos.
The second video is obtained after the first video passes through the video signal path. If there is no problem in the video signal path, the quality of the video passing through the path should be consistent with that of the original video or only slightly different; if there is a quality problem with the video signal path, the quality of the video transmitted on the path will be affected, and therefore, there will be a large difference in the quality of the second video from the original first video. Therefore, the first video and the second video are compared to judge whether the video signal path has quality problems.
In this embodiment, the quality detection device sends the first video to the video control device, the video signal transmission path transmits the video sample, the quality detection device compares the original video sample with the transmitted video, and the quality of the video signal transmission path can be determined according to the quality conditions of the two videos, so that the problem that the video signal occurs in the processing and transmission processes can be detected. Meanwhile, the quality detection device can be connected with one or more video control devices, sends the same video to the video control devices, and requests appointed video sample data from each connected video control device through a video request module. In this way, the quality of multiple video signal paths can be detected at a time. When the video control equipment returns a plurality of second videos, the quality detection can be simultaneously carried out on the multi-channel signals, and the time cost is reduced. The time required by the whole process of carrying out quality detection on the multipath signals can be almost instantly finished, and the time of the quality detection process can be greatly saved.
In an embodiment, the step of comparing the first video with the plurality of second videos to obtain quality detection results of the plurality of second videos includes: and comparing the video frame rate of the first video with the video frame rate of each second video, wherein if the video frame rate of the second video is lower than the video frame rate of the first video, the quality detection result of the corresponding second video is video blockage.
In this embodiment, through comparison of the video frame rates of the first video and the second video, whether the second video is stuck can be determined, and then whether a factor causing video sticking exists in the video control device can be determined, if so, a problem exists in a video signal path.
In an embodiment, the step of comparing the first video with the plurality of second videos to obtain quality detection results of the plurality of second videos includes: respectively acquiring first YUV data of each frame sequence of the first video and second YUV data of each frame sequence corresponding to the second video, calculating YUV difference values of the first YUV data and the second YUV data, and respectively comparing each YUV difference value with a preset YUV threshold value; and if the YUV difference value is larger than the preset YUV threshold value, the corresponding quality detection result of the second video is that the video color difference is too large.
Optionally, the method further includes a process of calculating the number of pixels with too large video color difference in the frame sequence of the video, and when the proportion of the number of pixels with too large video color difference in the whole video is greater than a certain preset pixel proportion threshold, the video is considered to have a problem. The preset pixel point proportion threshold value can be 5%, 10% or other values.
Alternatively, the preset YUV threshold may be 10%, 15%, 20%, or other values. Specifically, the preset YUV threshold is 15%.
Further, the YUV value range is 0-255, if the difference between the YUV data of a certain pixel in the second video and the YUV data of the corresponding pixel in the first video is more than 15%, the YUV value of the pixel is considered to be changed; if the YUV data of more than 10% of the total pixels in a video picture are changed, the picture is considered to have the problem of overlarge video color difference, namely the problem of screen blooming or screen blacking.
In this embodiment, by comparing the YUV difference value in the first video frame sequence and the second video frame sequence with the preset YUV threshold, it can be determined whether each frame sequence color of the second video changes too much, and it can be further determined whether the video control device has a factor causing a video color change, and if so, there is a problem in the video signal path.
In one embodiment, the method further comprises the following steps: recording a first time T1 at which a video request signal is transmitted to the video control apparatus and recording a plurality of second times T2 corresponding to the plurality of second videos, respectively.
In this embodiment, the first time T1 when the video request signal is sent is recorded, and the second times T2 when the second video is received are recorded, so that whether the video control device sends the video request signal for a long time before the second video is returned to the quality detection device can be known through the two times, and whether the video signal path causes video delay or not can be further determined.
In an embodiment, the step of comparing the first video with the plurality of second videos to obtain quality detection results of the plurality of second videos includes: respectively calculating time difference values of the first time and each second time, and comparing each time difference value with a preset time difference threshold value; and if the time difference value is larger than the preset time difference threshold value, the quality detection result of the second video is that the video delay is too large.
Alternatively, the preset time difference threshold may be 500ms (millisecond), 1000ms, 2000ms, or other times.
Specifically, for monitoring video, a delay of 1000ms generally meets the requirement of a user, and if the delay exceeds 1000ms, the application in a video conference or the like is greatly influenced. And for video monitoring in security and protection occasions, the delayed users with the time less than 2000ms can accept the video monitoring. Therefore, the preset time difference threshold value can be set to be 500-1000 ms according to practical occasions, and of course, other time can be set.
In this embodiment, by comparing the time difference between the first video and the second video with the preset time difference threshold, it can be determined whether the second video is delayed too much in the transmission process, and it can be further determined whether the video control device has a factor causing video delay, and if so, the video signal path has a problem.
In an embodiment, the step of comparing the first video with the plurality of second videos to obtain quality detection results of the plurality of second videos includes: and if the video frame rate, the YUV difference value and/or the time difference value of a certain second video meet the requirements, the quality detection result of the video signal channel corresponding to the second video is in accordance with the requirements.
In this embodiment, the quality detection result of the video signal path is determined to meet the requirement according to the quality comparison condition of the first video and the second video. And when one or more of the video frame rate, the YUV difference value and the time difference value of the second video meets the requirement, judging that the quality detection result of the video signal channel meets the requirement, and avoiding the problem. For the case of strict quality requirement, the video signal path with the problem but the small problem can be classified as not meeting the requirement by adjusting the threshold value.
Fig. 5 is a schematic flow chart of a method for detecting quality of a video signal path according to an embodiment. In this embodiment, a video control device is taken as an example for explanation, and the method for detecting quality of a video signal path provided in this embodiment mainly includes steps S510 to S520, which are explained in detail as follows:
and S510, receiving the first video sent by the quality detection device, and processing the first video to obtain a second video.
In this step, the video control apparatus receives the video sent by the quality detection device, and processes the video, such as encoding the video.
S520, receiving a video request signal sent by a quality detection device, and sending the second video to the quality detection device according to the video request signal; comparing the first video with the second video by the quality detection device to obtain a quality detection result of the second video; and obtaining the quality detection result of the corresponding video signal channel according to the quality detection result of the second video.
In this step, the video control apparatus returns the second video targeted by the video request signal to the quality detection device after receiving the video request signal sent by the quality detection device. The video transmission process of the video signal path is completed.
The video signal transmission path transmits the video sample, the video control device processes the video and returns the obtained second video to the quality detection device, the quality detection device compares the original video sample with the transmitted video, and the quality of the video signal transmission path can be judged according to the quality conditions of the two videos, so that the problem of the video signal in the processing and transmission processes can be detected. The video control devices are multiple, and the video signal paths can respectively return the second video to the quality detection device according to the video request signals. In this way, the quality of multiple video signal paths can be detected at a time. The time required by the whole process of carrying out quality detection on the multipath signals can be almost instantly finished, the time required by manual checking is greatly reduced, and the time can be greatly saved.
Fig. 6 is a schematic flow chart of a method for detecting quality of a video signal path according to an embodiment. In the present embodiment, a receiving quality detection device is taken as an example for explanation, and the method for detecting quality of a video signal path provided in the embodiment mainly includes steps S610 to S660, which are explained in detail as follows:
s610, the quality detection device sends the plurality of first videos to a plurality of video control devices.
And S620, each video control device processes the first video respectively to obtain a second video.
S630, the quality detection device sends video request signals to the plurality of video control devices respectively; the video request signal is used for requesting the plurality of video control devices to respectively transmit the second videos.
And S640, after receiving the video request signal, each video control device respectively sends the second video to a quality detection device.
S650, the quality detection device receives a plurality of second videos sent by the plurality of video control devices; the paths through which the video passes from the transmission of the first video to the reception of the second video constitute corresponding video signal paths.
S660, the quality detection device compares the first video with the plurality of second videos to obtain quality detection results of the plurality of second videos; and obtaining the quality detection results of a plurality of corresponding video signal paths according to the quality detection results of the plurality of second videos.
In this embodiment, the quality detection device sends the first video to the video control device, the video signal transmission path transmits the video sample, the video control device processes the video and returns the processed video to the quality detection device, then the quality detection device compares the original video sample with the transmitted video, and the quality of the video signal path can be determined according to the quality conditions of the two videos, so that the problem of the video signal occurring in the processing and transmission processes can be detected. Meanwhile, the quality detection device can be connected with one or more video control devices, sends the same video to the video control devices, and requests appointed video sample data from each connected video control device through a video request module. In this way, the quality of multiple video signal paths can be detected at a time. When the video control equipment returns a plurality of second videos, the quality detection can be simultaneously carried out on the multi-channel signals, and the time cost is reduced. The time required by the whole process of carrying out quality detection on the multi-channel signals can be almost instantly finished, the time required by the quality detection is greatly reduced compared with the time required by manual checking, and the quality detection time of a video signal channel can be greatly saved.
In order to better understand the above method, an application example of the quality detection method of the video signal path of the present invention is described in detail below. Fig. 7 is a schematic structural diagram of a scheme of a video signal detection system in an embodiment. As shown in fig. 7, the video signal detection system includes a quality detection device 701 and a video control apparatus 301. The detailed description is as follows:
the quality detection apparatus includes a video importing module 702, a video request sending module 703, a first video receiving module 704, a video comparing module 705, a first video managing module 706, a first video processing module 707, and a time recording module. The video control apparatus includes a second video receiving module 708, a second video managing module 709, a second video processing module 710, a video transmitting module 711, and a video request receiving module 712.
1) The video importing module 702 imports a first video into the quality detection apparatus 701 and transmits a plurality of the first videos to the plurality of video control devices 301;
2) the second video receiving module 708 receives the first video sent by the quality detection device 701, and sends the first video to the second video management module 709; the second video management module 709 is configured to manage a video and transmit the video to the second video processing module 710;
3) a second video processing module 710 in each video control device respectively encodes the first video to obtain a second video;
4) the video request sending module 703 sends video request signals to the plurality of video control devices 301, respectively; the video request signal contains information of a first video; a time recording module in the quality detection apparatus 701 records a first time T1 when the video request sending module 703 sends a video request signal to the video control device;
5) the video request receiving module 712 receives the video request signal, and the second video processing module 710 transmits the encoded second video to the video transmitting module 711 according to the information of the first video in the video request signal;
5) the video transmission module 711 transmits the second video to the quality detection apparatus 701;
6) the first video receiving module 704 receives the second video and sends the second video to the first video processing module 707; the time recording module records a second time T2 when the first video receiving module 704 receives the second video;
7) the first video processing module 707 decodes the second video, and sends the decoded second video to the video comparing module 705; at this time, the first video management module 706 also sends the first video to the video comparison module 705;
8) the video comparison module 705 compares the first video with the second video to obtain a quality detection result of the second video, and the specific comparison process is as follows:
firstly, comparing the video frame rate of the first video with the video frame rate of each second video, and if the video frame rate of the second video is lower than the video frame rate of the first video, determining that the quality detection result of the corresponding second video is video pause;
secondly, respectively acquiring first YUV data of each frame sequence of the first video and second YUV data of each frame sequence corresponding to the second video, calculating YUV difference values of the first YUV data and the second YUV data, and respectively comparing each YUV difference value with a preset YUV threshold value; if the YUV difference value is larger than the preset YUV threshold value, the quality detection result of the corresponding second video is that the video color difference is too large;
then, respectively calculating time difference values of the first time and each second time, and comparing each time difference value with a preset time difference threshold value; if the time difference value is larger than the preset time difference threshold value, the quality detection result of the second video is that the video delay is too large;
if the video frame rate, the YUV difference value and the time difference value of the second video do not have the above conditions, the quality of the first video is consistent with that of the second video or the difference is not large, so that the video signal path has no influence on the video quality. The quality detection result of the video signal path is considered to be satisfactory.
As shown in fig. 8, after the quality detection apparatus 701 imports the video, the imported multiple first videos are sent to the multiple video control devices 301, the video control devices 301 encode the first videos to obtain second videos, and then return the second videos to the quality detection apparatus 701 through the network, and the quality detection apparatus 701 performs quality detection on the returned videos to determine whether the quality of the videos on the transmission path is affected.
Specifically, after each video control device 301 is detected by the quality detection apparatus 701 shown in fig. 7, it can be known whether the second video receiving module 708, the second video management module 709, the second video processing module 710, the video sending module 711, and the like in the corresponding video control device 301 are working normally. If the operation is normal, the video control device 301 displays the signal collected by itself on the wall. Otherwise, when the quality detection device 701 detects that a module in a certain video control device works abnormally, the signal acquired by the video control device 301 itself may also be abnormal when the signal reaches the splicing wall system through encoding and data transmission.
The embodiment of the invention improves the video control equipment to a certain extent. As shown in fig. 7, the video control apparatus 301 of the video signal detection system according to the embodiment of the present invention adds a video receiving module and a video management module compared to the existing video control apparatus (shown in fig. 2). The video data generated by the existing original video control equipment is collected and generated by a sensor (such as a camera and a CCD) of the existing original video control equipment. The video control device modified in the embodiment of the invention can acquire the video sample from the quality detection device, so that the part of the video can be encoded and transmitted as a sample acquired from a sensor per se. It can be seen that the modified video control device has one more function besides the capability of autonomously acquiring video pictures: the video sample file is received from the quality detection device and the video is processed and transmitted in the existing manner.
Based on the same idea as the quality detection method of the video signal path in the above-described embodiment, the present invention also provides a quality detection apparatus of the video signal path, which can be used to perform the above-described quality detection method of the video signal path. For convenience of illustration, the structure of the embodiment of the quality detection device of the video signal path is only shown in the related part of the embodiment of the invention, and those skilled in the art will understand that the structure shown in the figure does not constitute a limitation of the device, and may include more or less components than those shown in the figure, or combine some components, or arrange different components.
As shown in fig. 9, the apparatus for detecting the quality of a video signal path includes a video transmitting module 810, a request signal transmitting module 820, a first video receiving module 830, and a video comparing module 840. The detailed description is as follows:
a video transmitting module 810 for transmitting a plurality of first videos to a plurality of video control devices; enabling each video control device to process the first video respectively to obtain a second video; the first video is a video for a mosaic wall.
A request signal transmitting module 820, configured to transmit video request signals to the plurality of video control apparatuses respectively; the video request signal is used for requesting the plurality of video control devices to respectively transmit the second videos.
A first video receiving module 830, configured to receive a second video sent by the plurality of video control devices; the paths through which the video passes from the transmission of the first video to the reception of the second video constitute corresponding video signal paths.
The video comparison module 840 is configured to compare the first video with the plurality of second videos respectively to obtain quality detection results of the plurality of second videos; and obtaining a plurality of corresponding quality detection results of the video signal paths according to the quality detection results of the plurality of second videos.
According to the embodiment, the first video is sent to the video control equipment, the video signal transmission path transmits the video sample, the original video sample and the transmitted video are compared, the quality of the video signal path can be judged according to the quality conditions of the two videos, and therefore the problem of the video signal in the processing and transmission process can be detected. The quality detection device can be connected with one or more video control devices, sends the same video to the video control devices, and requests appointed video sample data from each connected video control device through a video request module. In this way, the quality of multiple video signal paths can be detected at a time. When the video control equipment returns the second video, the quality detection can be simultaneously carried out on the multiple paths of signals, the time cost is reduced, the time required by the whole process of carrying out the quality detection on the multiple paths of signals can be almost instantly finished, and the time required by the quality detection is greatly reduced compared with the time required by manual checking.
In an embodiment, the video control apparatus further includes a time recording module, configured to record a first time when the video request signal is sent to the video control apparatus and record a plurality of second times when the plurality of second videos are received, respectively.
In an embodiment, the video comparison module is further configured to compare the video frame rate of the first video with the video frame rate of each second video, and if the video frame rate of the second video is lower than the video frame rate of the first video, the quality detection result of the corresponding second video is video stuck.
In an embodiment, the video comparison module is further configured to obtain first YUV data of each frame sequence of the first video and second YUV data of each frame sequence corresponding to the second video, respectively, calculate a YUV difference value between the first YUV data and the second YUV data, and compare each YUV difference value with a preset YUV threshold value, respectively; and if the YUV difference value is larger than the preset YUV threshold value, the corresponding quality detection result of the second video is that the video color difference is too large.
In an embodiment, the video comparison module is further configured to calculate time difference values of the first time and each second time, and compare each time difference value with a preset time difference threshold; and if the time difference value is larger than the preset time difference threshold value, the quality detection result of the second video is that the video delay is too large.
In an embodiment, the video comparison module is further configured to determine that a quality detection result of a video signal path corresponding to a certain second video meets a requirement if a video frame rate, a YUV difference value, and/or a time difference value of the certain second video meets the requirement.
As shown in fig. 10, the video control apparatus includes a second video receiving module 910 and a video returning module 920. The detailed description is as follows:
the second video receiving module 910 is configured to receive a first video sent by a quality detection apparatus, and process the first video to obtain a second video.
The video returning module 920 is configured to receive a video request signal sent by a quality detection apparatus, and send the second video to the quality detection apparatus according to the video request signal; comparing the first video with the second video by the quality detection device to obtain a quality detection result of the second video; and obtaining the quality detection result of the corresponding video signal channel according to the quality detection result of the second video.
The embodiment of the invention also provides a quality detection system of the video signal path, which comprises a quality detection device and a plurality of video control devices. The detailed description is as follows:
the quality detection device is used for importing a first video and sending a plurality of first videos to the plurality of video control devices; the first video is a video for a mosaic wall;
the video control devices are used for processing the first video respectively to obtain a second video;
the quality detection device is further configured to send video request signals to the plurality of video control devices respectively; the video request signal is used for requesting the plurality of video control devices to respectively send the second videos;
and the video control devices are also used for respectively sending the second videos to the quality detection device after receiving the video request signals.
The quality detection device is also used for receiving a plurality of second videos sent by the plurality of video control devices; comparing the first video with the plurality of second videos to obtain quality detection results of the plurality of second videos; obtaining quality detection results of a plurality of corresponding video signal paths according to the quality detection results of the plurality of second videos; the paths through which the video passes from the transmission of the first video to the reception of the second video constitute corresponding video signal paths.
According to the embodiment, the first video is sent to the video control equipment, the video signal transmission path transmits the video sample, the original video sample and the transmitted video are compared, the quality of the video signal path can be judged according to the quality conditions of the two videos, and therefore the problem of the video signal in the processing and transmission process can be detected. The quality detection device can be connected with one or more video control devices, sends the same video to the video control devices, and requests appointed video sample data from each connected video control device through a video request module. In this way, the quality of multiple video signal paths can be detected at a time. When the video control equipment returns the second video, the quality detection can be simultaneously carried out on the multiple paths of signals, the time cost is reduced, the time required by the whole process of carrying out the quality detection on the multiple paths of signals can be almost instantly finished, and the time required by the quality detection is greatly reduced compared with the time required by manual checking.
It should be noted that, the quality detection apparatus for video signal paths of the present invention corresponds to the quality detection method for video signal paths of the present invention one-to-one, and the technical features and the beneficial effects thereof described in the embodiments of the quality detection method for video signal paths are all applicable to the embodiments of the quality detection apparatus for video signal paths, and specific contents can be referred to the description in the embodiments of the method of the present invention, which is not repeated herein, and thus is stated herein.
In addition, in the above-mentioned exemplary embodiment of the quality detection apparatus for a video signal path, the logical division of each program module is only an example, and in practical applications, the above-mentioned function distribution may be performed by different program modules according to needs, for example, due to the configuration requirements of corresponding hardware or the convenience of implementation of software, that is, the internal structure of the quality detection apparatus for a video signal path is divided into different program modules to perform all or part of the above-described functions.
It will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program, which is stored in a computer readable storage medium and sold or used as a stand-alone product. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It should be noted that the terms "first \ second \ third" related to the embodiments of the present invention are merely used for distinguishing similar objects, and do not represent a specific ordering for the objects, and it should be understood that "first \ second \ third" may exchange a specific order or sequence order if allowed. It should be understood that the terms first, second, and third, as used herein, are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or otherwise described herein.
The terms "comprises" and "comprising," and any variations thereof, of embodiments of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or (module) elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-described examples merely represent several embodiments of the present invention and should not be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A method for detecting quality of a video signal path, comprising the steps of:
transmitting the first video to a plurality of video control devices; enabling each video control device to process the first video respectively to obtain a plurality of second videos; the first video is a video for a mosaic wall; the video control equipment does not influence the video quality of the first video when processing the first video; the video control equipment is a camera;
transmitting video request signals to the plurality of video control devices, respectively; the video request signal is used for requesting the plurality of video control devices to respectively send corresponding second videos;
receiving a plurality of second videos sent by the plurality of video control devices; the paths through which the video passes from the process of sending the first video to the process of receiving the second video form corresponding video signal paths; the video signal path includes the video control device;
comparing the first video with the plurality of second videos respectively to obtain quality detection results of the plurality of second videos; obtaining a plurality of corresponding quality detection results of the video signal paths according to the quality detection results of the plurality of second videos;
further comprising the steps of: recording a first time for sending a video request signal to the video control device and respectively recording a plurality of second times corresponding to the plurality of second videos;
and determining whether the video control equipment returns the second video to the quality detection device after sending the video request signal for a long time according to the first time and the second time, and further judging whether the video signal path can cause video delay.
2. The method of claim 1, further comprising the steps of:
the step of comparing the first video with the plurality of second videos respectively to obtain quality detection results of the plurality of second videos includes:
comparing the video frame rate of the first video with the video frame rate of each second video, wherein if the video frame rate of the second video is lower than the video frame rate of the first video, the quality detection result of the corresponding second video is video blockage;
and/or the presence of a gas in the gas,
respectively acquiring first YUV data of each frame sequence of the first video and second YUV data of each frame sequence corresponding to each second video, calculating YUV difference values of each first YUV data and each second YUV data, and respectively comparing each YUV difference value with a preset YUV threshold value; if the YUV difference value is larger than the preset YUV threshold value, the quality detection result of the corresponding second video is that the video color difference is too large;
and/or the presence of a gas in the gas,
respectively calculating time difference values of the first time and each second time, and comparing each time difference value with a preset time difference threshold value; if the time difference value is larger than the preset time difference threshold value, the quality detection result of the corresponding second video is that the video delay is too large;
and if the video frame rate, the YUV difference value and/or the time difference value of a certain second video meet the requirements, the quality detection result of the video signal channel corresponding to the certain second video is in accordance with the requirements.
3. A method for detecting quality of a video signal path, comprising the steps of:
receiving a first video sent by a quality detection device, and processing the first video to obtain a second video; the video control equipment does not influence the video quality of the first video when processing the first video; the video control equipment is a camera;
receiving a video request signal sent by a quality detection device, and sending the second video to the quality detection device according to the video request signal; comparing the first video with the second video by the quality detection device to obtain a quality detection result of the second video; obtaining a quality detection result of a corresponding video signal channel according to the quality detection result of the second video; the video signal path is formed by the path through which the video passes in the process of transmitting the first video from the quality detection device to receiving the second video by the quality detection device; the video signal path includes a video control device;
the quality detection device is used for recording first time for sending the video request signal to the video control equipment and respectively recording and receiving a plurality of second times corresponding to a plurality of second videos sent by the plurality of video control equipment; and determining whether the video control equipment returns the second video to the quality detection device after sending the video request signal for a long time according to the first time and the second time, and further judging whether the video signal path can cause video delay.
4. A method for detecting quality of a video signal path, comprising the steps of:
the quality detection device sends the first video to a plurality of video control devices; the video control equipment is a camera;
each video control device respectively processes the first video to obtain a plurality of second videos; the video control equipment does not influence the video quality of the first video when processing the first video;
the quality detection device respectively sends video request signals to the plurality of video control devices; the video request signal is used for requesting the plurality of video control devices to respectively send corresponding second videos;
after receiving the video request signal, each video control device respectively sends a corresponding second video to a quality detection device;
the quality detection device receives a plurality of second videos sent by the plurality of video control devices; the paths through which the video passes from the process of sending the first video to the process of receiving the second video form corresponding video signal paths; the video signal path includes the video control device;
the quality detection device compares the first video with the plurality of second videos to obtain quality detection results of the plurality of second videos; obtaining quality detection results of a plurality of corresponding video signal paths according to the quality detection results of the plurality of second videos;
further comprising the steps of: the quality detection device records a first time for sending the video request signal to the video control equipment and respectively records a plurality of second times corresponding to the plurality of second videos;
the quality detection device determines whether the video control device sends the second video back to the quality detection device after sending the video request signal for a long time according to the first time and the second time, and then judges whether the video signal path can cause video delay.
5. An apparatus for detecting quality of a video signal path, comprising:
the video sending module is used for sending the first video to the plurality of video control devices; enabling each video control device to process the first video respectively to obtain a plurality of second videos; the first video is a video for a mosaic wall; the video control equipment does not influence the video quality of the first video when processing the first video; the video control equipment is a camera;
a request signal sending module, configured to send video request signals to the plurality of video control devices, respectively; the video request signal is used for requesting the plurality of video control devices to respectively send corresponding second videos;
the first video receiving module is used for receiving a plurality of second videos sent by the plurality of video control devices; the paths through which the video passes from the process of sending the first video to the process of receiving the second video form corresponding video signal paths; the video signal path includes the video control device;
the video comparison module is used for comparing the first video with the plurality of second videos respectively to obtain quality detection results of the plurality of second videos; obtaining a plurality of corresponding quality detection results of the video signal paths according to the quality detection results of the plurality of second videos;
the video control device also comprises a time recording module used for recording the first time for sending the video request signal to the video control device and respectively recording a plurality of second times corresponding to the plurality of second videos;
the video comparison module is further used for determining whether the video control equipment sends the second video back to the quality detection device after sending the video request signal for a long time according to the first time and the second time, and further judging whether the video signal path causes video delay.
6. The apparatus according to claim 5, wherein the video matching module,
the video frame rate of the first video is respectively compared with the video frame rates of the second videos, and if the video frame rate of the second video is lower than the video frame rate of the first video, the quality detection result of the corresponding second video is video blockage;
and/or the presence of a gas in the gas,
respectively acquiring first YUV data of each frame sequence of the first video and second YUV data of each frame sequence corresponding to each second video, calculating YUV difference values of each first YUV data and each second YUV data, and respectively comparing each YUV difference value with a preset YUV threshold value; if the YUV difference value is larger than the preset YUV threshold value, the quality detection result of the corresponding second video is that the video color difference is too large;
and/or the presence of a gas in the gas,
respectively calculating time difference values of the first time and each second time, and comparing each time difference value with a preset time difference threshold value; if the time difference value is larger than the preset time difference threshold value, the quality detection result of the corresponding second video is that the video delay is too large;
and if the video frame rate, the YUV difference value and/or the time difference value of a certain second video meet the requirements, the quality detection result of the video signal channel corresponding to the certain second video is in accordance with the requirements.
7. A video control apparatus, comprising:
the second video receiving module is used for receiving the first video sent by the quality detection device and processing the first video to obtain a second video; the video control equipment does not influence the video quality of the first video when processing the first video; the video control equipment is a camera;
the video return module is used for receiving a video request signal sent by a quality detection device and sending the second video to the quality detection device according to the video request signal; comparing the first video with the second video by the quality detection device to obtain a quality detection result of the second video; obtaining a quality detection result of a corresponding video signal channel according to the quality detection result of the second video; the video signal path is formed by the path through which the video passes in the process of transmitting the first video from the quality detection device to receiving the second video by the quality detection device; the video signal path includes a video control device;
the quality detection device is used for recording first time for sending the video request signal to the video control equipment and respectively recording and receiving a plurality of second times corresponding to a plurality of second videos sent by the plurality of video control equipment; and determining whether the video control equipment returns the second video to the quality detection device after sending the video request signal for a long time according to the first time and the second time, and further judging whether the video signal path can cause video delay.
8. A system for quality detection of a video signal path, comprising: a quality detection device and a plurality of video control devices;
the quality detection device is used for importing a first video and sending the first video to the plurality of video control devices; the first video is a video for a mosaic wall; the video control equipment is a camera;
the video control devices are used for processing the first video respectively to obtain a plurality of second videos; the video control equipment does not influence the video quality of the first video when processing the first video;
the quality detection device is further configured to send video request signals to the plurality of video control devices respectively; the video request signal is used for requesting the plurality of video control devices to respectively send corresponding second videos;
the video control devices are also used for respectively sending corresponding second videos to the quality detection device after receiving the video request signals;
the quality detection device is further configured to receive a plurality of second videos sent by the plurality of video control devices; comparing the first video with the plurality of second videos to obtain quality detection results of the plurality of second videos; obtaining quality detection results of a plurality of corresponding video signal paths according to the quality detection results of the plurality of second videos; the paths through which the video passes from the process of sending the first video to the process of receiving the second video form corresponding video signal paths; the video signal path includes the video control device;
the quality detection device is also used for recording a first time for sending the video request signal to the video control equipment and respectively recording a plurality of second times corresponding to a plurality of second videos sent by a plurality of video control equipment; and determining whether the video control equipment returns the second video to the quality detection device after sending the video request signal for a long time according to the first time and the second time, and further judging whether the video signal path can cause video delay.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 4.
10. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the method of any of claims 1 to 4 are performed when the program is executed by the processor.
CN201711424285.1A 2017-12-25 2017-12-25 Method, device and system for detecting quality of video signal path Active CN108093252B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711424285.1A CN108093252B (en) 2017-12-25 2017-12-25 Method, device and system for detecting quality of video signal path

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711424285.1A CN108093252B (en) 2017-12-25 2017-12-25 Method, device and system for detecting quality of video signal path

Publications (2)

Publication Number Publication Date
CN108093252A CN108093252A (en) 2018-05-29
CN108093252B true CN108093252B (en) 2020-05-05

Family

ID=62177927

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711424285.1A Active CN108093252B (en) 2017-12-25 2017-12-25 Method, device and system for detecting quality of video signal path

Country Status (1)

Country Link
CN (1) CN108093252B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN105915895A (en) * 2016-05-12 2016-08-31 广东威创视讯科技股份有限公司 Video signal detection method

Also Published As

Publication number Publication date
CN108093252A (en) 2018-05-29

Similar Documents

Publication Publication Date Title
CN101184241B (en) Image automatic detection method and apparatus
CN100417206C (en) Data relay device, data relay method and data transmission system
US9992488B2 (en) Method and system for region-based monitoring of video assets
US9071821B2 (en) Method and system for long term monitoring of video assets
CN111080637A (en) Cloud service-based advertisement remote method, device, system, product and medium
US9674487B2 (en) Transmission system, relay apparatus, transmission terminal, and transmission terminal control program
US8239904B2 (en) Video path confirmation
CN104834498A (en) Signal processing method and device
KR101906300B1 (en) System and Apparatus for Monitoring Broadcasting Streaming Based on IP
CN108093252B (en) Method, device and system for detecting quality of video signal path
WO2019218147A1 (en) Method, apparatus and device for transmitting surveillance video
KR101119848B1 (en) Apparatus and method for detecting connectivity fault of image input device
KR20130044062A (en) Remote video transmission system
KR20120044821A (en) Method and network camera for controlling video from plural network camera
CN103019912A (en) Processing monitoring data in a monitoring system
EP3629577B1 (en) Data transmission method, camera and electronic device
CN102378035B (en) Set top box test method and system thereof
KR20140146429A (en) CCTV image aquisition and management system and method using smart devices
CN110691264A (en) Television program pushing system and method based on user browsing habits
CN109862597B (en) Instant network switching method
KR101576223B1 (en) Apparatus for Monitering of Brodcasting Signal and Method thereof
CN105007526A (en) Network diagnosis method and device
Burnik et al. Automated Broadcast Video Quality Analysis System
KR20180097491A (en) An Apparatus for Switching TV Image and a Method for Advertizing with a TV Using the Same
CN115086725A (en) Remote same-screen method, device and equipment based on browser and storage medium

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant