CN106850433B - Video trunk line management method and device of video monitoring system - Google Patents
Video trunk line management method and device of video monitoring system Download PDFInfo
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- CN106850433B CN106850433B CN201710020027.0A CN201710020027A CN106850433B CN 106850433 B CN106850433 B CN 106850433B CN 201710020027 A CN201710020027 A CN 201710020027A CN 106850433 B CN106850433 B CN 106850433B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/123—Evaluation of link metrics
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/70—Routing based on monitoring results
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
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Abstract
The invention discloses a video trunk management method and a device of a video monitoring system, wherein the method comprises the following steps: determining all cascade channels from the monitoring point position monitoring equipment corresponding to the playing request to the target monitoring equipment according to the playing request of the current user; judging whether cascade paths meeting the video importance condition of the monitoring point location exist in all the determined cascade paths; if the cascade connection path exists, the cascade connection path with the optimal video trunk quality is selected as the cascade connection path corresponding to the current user from the cascade connection paths meeting the video importance condition of the monitoring point. The cascade connection path is selected by adopting the video importance condition of the monitoring point, and the cascade connection path with the optimal quality of the video trunk line is selected from the cascade connection paths meeting the video importance condition of the monitoring point, so that the video trunk line management is more reasonable, and the video image effect played by the target monitoring equipment is better.
Description
Technical Field
The present invention relates to the field of video monitoring technology, and in particular, to a method and an apparatus for managing a video trunk of a video monitoring system.
Background
In a video matrix networking system, the utilization of video trunk line resources is unordered and uncontrolled, so that the video trunk line resources are randomly allocated and preempted by users, and services cannot be normally developed. For example, in an emergency, when a user needs to view a video of a certain monitoring point, no video trunk is available because video trunk resources are occupied by other users, and the viewing of the video fails. For another example, when different users view the same monitoring point, the corresponding cascade connection path cannot be found quickly, so that the monitoring point video cannot be played quickly.
In order to display the camera video of the monitoring point position requested by the user on the target monitor, a cascade path is calculated and selected from a video matrix networking system to transmit the video, and the cascade path is formed by connecting and combining video main lines of a series of video matrixes of the video matrix networking system. This requires efficient distribution and management of the video trunks of the video matrix system.
In the prior art, a shortest path method is generally adopted to determine a cascade path, that is, a cascade path with the least number of video trunks forming the cascade path is selected from a video matrix networking system as a final path for transmitting video. Although the method ensures that the transmission path of the video in the whole matrix networking system is shortest, the scheme has many disadvantages, for example, the quality of the cascade path with the shortest path is probably the worst, and finally the video image effect is poor.
In summary, the prior art cannot reasonably manage the video trunk in the video monitoring system.
Disclosure of Invention
The embodiment of the invention provides a video trunk line management method and device of a video monitoring system, which are used for solving the problem that the video trunk line in the video monitoring system cannot be reasonably managed in the prior art.
The embodiment of the invention provides a video trunk management method of a video monitoring system, which comprises the following steps:
determining all cascade channels from the monitoring point position monitoring equipment corresponding to the playing request to the target monitoring equipment according to the playing request of the current user; the cascade path is a directed path for transmitting a video signal of the monitoring point position monitoring equipment to the target monitoring equipment through the video matrix and the video trunk;
judging whether cascade paths meeting the video importance condition of the monitoring point location exist in all the determined cascade paths; the condition of the importance degree of the monitoring point location video is that the importance degree of the monitoring point location video currently transmitted by all video trunk lines forming the cascade connection path is lower than the importance degree of the monitoring point location video requested to be played by a current user;
if the cascade connection path exists, the cascade connection path with the optimal video trunk quality is selected as the cascade connection path corresponding to the current user from the cascade connection paths meeting the video importance condition of the monitoring point.
In a possible implementation manner, in the method for managing a video trunk of a video monitoring system according to an embodiment of the present invention, the determining whether there is a cascade path that satisfies a video importance condition of a monitored point in all the determined cascade paths includes:
judging whether idle cascade paths exist in all the determined cascade paths;
and if no idle cascade path exists, judging whether cascade paths meeting the video importance condition of the monitoring point location exist in all the determined cascade paths.
In a possible implementation manner, in the video trunk management method of the video monitoring system provided in the embodiment of the present invention, the method further includes:
and if the idle cascade connection path exists, selecting the cascade connection path with the optimal video trunk quality as the cascade connection path corresponding to the current user in the idle cascade connection path.
In a possible implementation manner, in the method for managing a video trunk of a video monitoring system according to an embodiment of the present invention, if there is no idle cascade path, determining whether there is a cascade path that satisfies a video importance condition of a monitoring point location in all the determined cascade paths, including:
if no idle cascade path exists, judging whether cascade paths meeting priority conditions exist in all the determined cascade paths; the priority condition is that the priorities of users corresponding to all video trunk lines forming the cascade channel are lower than the priority of the current user;
if the cascade connection path meeting the priority condition does not exist, judging whether the cascade connection path meeting the video importance condition of the monitoring point exists in all the determined cascade connection paths.
In a possible implementation manner, in the video trunk management method of the video monitoring system provided in the embodiment of the present invention, the method further includes:
and if the cascade paths meeting the priority condition exist, selecting the cascade path with the optimal video trunk quality as the cascade path corresponding to the current user from the cascade paths meeting the priority condition.
In a possible implementation manner, in the video trunk management method of the video monitoring system provided in the embodiment of the present invention, the method further includes:
if the cascade connection path which meets the video importance condition of the monitoring point location does not exist, judging whether the cascade connection path which meets the priority condition exists in all the determined cascade connection paths; the priority condition is that the priorities of users corresponding to all video trunk lines forming the cascade channel are lower than the priority of the current user;
and if the cascade paths meeting the priority condition exist, selecting the cascade path with the optimal video trunk quality as the cascade path corresponding to the current user from the cascade paths meeting the priority condition.
In a possible implementation manner, in the method for managing a video trunk of a video monitoring system provided in an embodiment of the present invention, the determining, according to a play request of a current user, all cascade paths from a monitoring point location monitoring device corresponding to the play request to a target monitoring device includes:
constructing a video trunk connection diagram of the video monitoring system;
and determining all cascade paths from the monitoring point position monitoring equipment corresponding to the playing request to the target monitoring equipment according to the video trunk communication diagram and the playing request of the current user.
In a possible implementation manner, in the video trunk management method of the video monitoring system provided in the embodiment of the present invention, a video trunk connection diagram of the video monitoring system is constructed as follows:
numbering monitoring equipment of each monitoring point position, input ports and output ports of each video matrix and monitoring equipment in the video monitoring system according to a preset sequence;
creating a two-dimensional array; the number of rows and the number of columns of the two-dimensional array are the sum of the number of monitoring point position monitoring equipment, the number of input ports and output ports of the video matrix and the number of monitoring equipment;
and respectively marking the communication relation between each monitoring point position monitoring device and each video matrix input port, the communication relation between each video matrix input port and each video matrix output port and the communication relation between each video matrix output port and the monitoring device in the two-dimensional array to obtain a video trunk communication diagram of the video monitoring system.
The embodiment of the invention also provides a video trunk management device of the video monitoring system, which comprises:
the cascade connection path determining module is used for determining all cascade connection paths from the monitoring point position monitoring equipment corresponding to the playing request to the target monitoring equipment according to the playing request of the current user; the cascade path is a directed path for transmitting a video signal of the monitoring point position monitoring equipment to the target monitoring equipment through the video matrix and the video trunk;
the first judgment module is used for judging whether cascade paths meeting the video importance condition of the monitoring point location exist in all the determined cascade paths; the condition of the importance degree of the monitoring point location video is that the importance degree of the monitoring point location video currently transmitted by all video trunk lines forming the cascade connection path is lower than the importance degree of the monitoring point location video requested to be played by a current user;
and the first determining module is used for selecting the cascade connection path with the optimal video trunk quality as the cascade connection path corresponding to the current user from the cascade connection paths meeting the video importance condition of the monitoring point location if the cascade connection path exists.
In a possible implementation manner, in the video trunk management apparatus of the video monitoring system provided in the embodiment of the present invention, the first determining module is configured to:
judging whether idle cascade paths exist in all the determined cascade paths;
and if no idle cascade path exists, judging whether cascade paths meeting the video importance condition of the monitoring point location exist in all the determined cascade paths.
In a possible implementation manner, in the video trunk management apparatus of the video monitoring system provided in the embodiment of the present invention, the apparatus further includes:
and the second determining module is used for selecting the cascade path with the optimal video trunk quality as the cascade path corresponding to the current user in the idle cascade paths if the idle cascade paths exist.
In a possible implementation manner, in the video trunk management apparatus of the video monitoring system provided in the embodiment of the present invention, the first determining module is specifically configured to:
if no idle cascade path exists, judging whether cascade paths meeting priority conditions exist in all the determined cascade paths; the priority condition is that the priorities of users corresponding to all video trunk lines forming the cascade channel are lower than the priority of the current user;
if the cascade connection path meeting the priority condition does not exist, judging whether the cascade connection path meeting the video importance condition of the monitoring point exists in all the determined cascade connection paths.
In a possible implementation manner, in the video trunk management apparatus of the video monitoring system provided in the embodiment of the present invention, the apparatus further includes:
and the third determining module is used for selecting the cascade access with the optimal video trunk quality as the cascade access corresponding to the current user from the cascade accesses meeting the priority condition if the cascade access meeting the priority condition exists.
In a possible implementation manner, in the video trunk management apparatus of the video monitoring system provided in the embodiment of the present invention, the apparatus further includes:
the third judging module is used for judging whether cascade paths meeting priority conditions exist in all the determined cascade paths if cascade paths meeting the monitoring point video importance conditions do not exist; the priority condition is that the priorities of users corresponding to all video trunk lines forming the cascade channel are lower than the priority of the current user;
and the fourth determining module is used for selecting the cascade path with the optimal video trunk quality as the cascade path corresponding to the current user from the cascade paths meeting the priority condition if the cascade paths meeting the priority condition exist.
In a possible implementation manner, in the video trunk management apparatus of the video monitoring system provided in an embodiment of the present invention, the determining module includes:
the communication graph building module is used for building a video trunk communication graph of the video monitoring system;
and the cascade path determining submodule is used for determining all cascade paths from the monitoring point position monitoring equipment corresponding to the playing request to the target monitoring equipment according to the video trunk line communication diagram and the playing request of the current user.
In a possible implementation manner, in the video trunk management apparatus of the video monitoring system provided in the embodiment of the present invention, the connectivity graph constructing module includes:
the numbering unit is used for numbering monitoring equipment of each monitoring point position, input ports and output ports of each video matrix and monitoring equipment in the video monitoring system according to a preset sequence;
the array creating unit is used for creating a two-dimensional array; the number of rows and the number of columns of the two-dimensional array are the sum of the number of monitoring point position monitoring equipment, the number of input ports and output ports of the video matrix and the number of monitoring equipment;
and the communication relation determining unit is used for respectively marking the communication relation between each monitoring point position monitoring device and each video matrix input port, the communication relation between each video matrix input port and each video matrix output port and the communication relation between each video matrix output port and the monitoring device in the two-dimensional array to obtain a video trunk communication diagram of the video monitoring system.
The invention has the following beneficial effects:
the embodiment of the invention provides a video trunk management method and a device of a video monitoring system, wherein the method comprises the following steps: determining all cascade channels from the monitoring point position monitoring equipment corresponding to the playing request to the target monitoring equipment according to the playing request of the current user; the cascade path is a directed path for transmitting a video signal of the monitoring point position monitoring equipment to the target monitoring equipment through the video matrix and the video trunk; judging whether cascade paths meeting the video importance condition of the monitoring point location exist in all the determined cascade paths; the condition of the importance of the monitoring point video is that the importance of the monitoring point video currently transmitted by all video trunk lines forming the cascade connection path is lower than the importance of the monitoring point video requested to be played by the current user; if the cascade connection path exists, the cascade connection path with the optimal video trunk quality is selected as the cascade connection path corresponding to the current user from the cascade connection paths meeting the video importance condition of the monitoring point. The video trunk line management method provided by the embodiment of the invention selects the cascade connection path by adopting the video importance condition of the monitoring point, selects the cascade connection path with the optimal quality of the video trunk line from the cascade connection paths meeting the video importance condition of the monitoring point, ensures that the video signal with higher video importance of the monitoring point is transmitted preferentially, and selects the cascade connection path with the optimal quality of the video trunk line, thereby ensuring that the video trunk line management is more reasonable and the video image effect played by the target monitoring equipment is better.
Drawings
Fig. 1 is a flowchart of a video trunk management method of a video monitoring system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a video surveillance system;
fig. 3 is a second flowchart of a video trunk management method of a video surveillance system according to an embodiment of the present invention;
fig. 4 is a third flowchart of a video trunk management method of a video monitoring system according to an embodiment of the present invention;
FIG. 5 is a flow chart of a method for constructing a video trunk connection diagram of a video surveillance system;
FIG. 6 is a second schematic diagram of a video surveillance system;
FIG. 7 is a directed path diagram of a video transmission in the video surveillance system shown in FIG. 6;
fig. 8 is a schematic structural diagram of a video trunk management apparatus of a video monitoring system according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a video trunk management method of a video monitoring system, aiming at the problem that the video trunk in the video monitoring system can not be reasonably managed in the prior art.
The following describes in detail a specific implementation of a video trunk management method of a video monitoring system according to an embodiment of the present invention with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides a video trunk management method for a video monitoring system, including:
s101, determining all cascade channels from monitoring point position monitoring equipment corresponding to a playing request to target monitoring equipment according to the playing request of a current user; the cascade path is a directed path for transmitting a video signal of the monitoring point position monitoring equipment to the target monitoring equipment through the video matrix and the video trunk;
s102, judging whether cascade paths meeting the video importance condition of the monitoring point location exist in all the determined cascade paths; the condition of the importance of the monitoring point video is that the importance of the monitoring point video currently transmitted by all video trunk lines forming the cascade connection path is lower than the importance of the monitoring point video requested to be played by the current user;
and S103, if the cascade connection path exists, selecting the cascade connection path with the optimal video trunk quality as the cascade connection path corresponding to the current user from the cascade connection paths meeting the video importance condition of the monitoring point.
The video trunk line management method of the video monitoring system provided by the embodiment of the invention selects the cascade connection path by adopting the video importance condition of the monitoring point, selects the cascade connection path with the optimal quality of the video trunk line from the cascade connection paths meeting the video importance condition of the monitoring point, ensures that the video signal with higher video importance of the monitoring point is transmitted preferentially, and selects the cascade connection path with the optimal quality of the video trunk line, thereby ensuring that the video trunk line management is more reasonable and the video image effect played by the target monitoring equipment is better.
Fig. 2 is a schematic structural diagram of a video monitoring system, the video monitoring system generally includes a plurality of monitoring point location monitoring devices 202, at least two video matrices 201, and a plurality of monitoring devices 203, two 4 × 4 video matrices 201 are taken as an example in fig. 2 for illustration, in practical application, the video matrices 201 in the video monitoring system and the input ports and the output ports of each video matrix 201 may also be in other numbers, and the number of the video matrices 201 and the number of the input ports and the output ports of the video matrices 201 are not limited herein.
The video matrix refers to an electronic device which outputs m paths of video signals to n paths of monitoring equipment in an array switching mode, and generally, the input of the matrix is larger than the output, namely, m > n.
There is a direct physical connection of video input interfaces and video output interfaces between the two video matrices 201 through which video signals can pass from one video matrix 201 to the other video matrix 201, this physical connection (physical link) being referred to as a video trunk 204. The video trunk 204 is divided into an input trunk and an output trunk according to the transmission direction of the video signal, these two concepts have relativity, and for the same video trunk 204, since two video matrices 201 are connected, if it is the input trunk for one of the video matrices 201, it is the output trunk for the other video matrix 201, and vice versa. It is possible for the video matrix 201 to connect to the input trunk as well as to connect to the output trunk.
The video matrix cascade is a physical deployment structure of a plurality of video matrices 201, generally, the video matrix cascade requires at least two video matrices 201, fig. 2 illustrates an example of two video matrix cascades, an output interface of a first video matrix (the left video matrix 201 in fig. 2) is connected to an input interface of a second video matrix (the right video matrix 201 in fig. 2) through a video trunk 204, and thus the first video matrix and the second video matrix form the video matrix cascade. In fig. 2, two video matrices 201 are illustrated as being connected by two video trunks 204, and the larger the number of video trunks 204, the more video signals can be transmitted simultaneously. Furthermore, the relation between the video matrices 201 cascaded to each other is equal, i.e. the first video matrix and the second video matrix may also interchange positions.
It should be noted that there are two modes for video transmission, one mode is circuit switching, and each video trunk can only transmit one video signal by adopting the circuit switching mode; another way is packet switching, which transmits video signals over an IP network and may transmit multiple video signals at a time. The embodiments of the present invention preferably employ a circuit switching method to transmit video signals, and the circuit switching method is used as an example in the embodiments of the present invention unless otherwise specified.
In specific implementation, in the video trunk management method provided in the embodiment of the present invention, a play request of one user may be received each time, or play requests of multiple users may be received simultaneously. In step S101, according to the play request of the current user, the monitoring point location monitoring device and the target monitoring device corresponding to the play request may be determined, and according to the monitoring point location monitoring device and the target monitoring device, and in combination with the specific structure of the video monitoring system, all cascade paths from the monitoring point location monitoring device corresponding to the play request to the target monitoring device may be found.
Specifically, the monitoring point location monitoring device is preferably a camera, and the monitoring device is generally a monitor. In practical applications, the importance degrees of the monitoring devices at each monitoring point are different, for example, the information amount of a camera arranged at a gate position is larger than the information amount of a camera arranged at a corner, so that the video importance degree of each monitoring point can be determined according to the information amount, and of course, the video importance degree of each monitoring point can also be determined according to other determination indexes, which is only illustrated here by way of example, and how to determine the video importance degree of each monitoring point is not limited.
In step S103, if there are multiple cascade paths satisfying the video importance condition of the monitored point, the cascade path with the best quality of the video trunk is selected, and if there is one cascade path satisfying the video importance condition of the monitored point, the cascade path is directly selected. In particular implementation, the quality of the cascade path may be determined in the following manner:
dividing the video trunk into a plurality of levels according to the quality of the video trunk, for example, dividing the video trunk into four levels of good, medium and poor according to the quality, and specifically, determining the quality of the video trunk through the service time or the aging degree of the video trunk;
each grade is given a numerical value, the better the quality of the video trunk line is, the higher the numerical value is, for example, the superior, the good, the middle and the poor can correspond to 4, 3, 2, 1 and other numbers respectively;
for each cascade path, calculating a quality average value of all video trunks forming the cascade path, and taking the average value as a quality value of the cascade path, for example, if a certain cascade path is composed of three video trunks, the quality of the three video trunks is respectively excellent, excellent and good, the quality values of the video trunks are respectively 4, 4 and 3, and the quality value of the cascade path is (4+4+3)/3 ═ 3.67, the quality values of all the cascade paths can be obtained according to similar steps.
Further, in the video trunk management method provided in the embodiment of the present invention, before determining the video importance condition of the monitored point, it may also be determined whether there is an idle cascade path, that is, step S102 may include (not shown in the figure):
s1021, judging whether idle cascade paths exist in all the determined cascade paths;
and S1022, if no idle cascade path exists, judging whether cascade paths meeting the video importance condition of the monitoring point location exist in all the determined cascade paths.
Specifically, the video trunk management method provided in the embodiment of the present invention may further include:
and S1023, if an idle cascade connection path exists, selecting the cascade connection path with the optimal video trunk quality as the cascade connection path corresponding to the current user in the idle cascade connection path.
Judging whether an idle cascade path exists or not before judging the video importance condition of the monitoring point location, and if the idle cascade path exists, preferentially using the idle cascade path, not needing to judge the video importance condition of the monitoring point location; and if no idle cascade path exists, further judging whether a cascade path meeting the video importance condition of the monitoring point location exists.
Specifically, in step S1021, the method for determining whether there is an idle cascade path includes: and judging whether all the video trunks in the cascade connection channel are idle, if all the video trunks in the cascade connection channel are idle, the cascade connection channel is idle. Judging whether a certain video trunk is idle at least comprises the following two conditions: in case one, if a certain video trunk is not occupied by any user, i.e. the video trunk does not transmit any video signal, the video trunk is idle; and in the second situation, if the video signal transmitted by the video trunk is the same video signal as the video signal of the monitoring point monitoring equipment corresponding to the playing request of the current user, the video trunk is idle, so the situation is called multiplexing of the video trunk, and the video trunk can be fully utilized by multiplexing the video trunk, so that the utilization rate of the video trunk is improved.
Furthermore, in the video trunk management method provided in the embodiment of the present invention, in addition to determining the video importance condition of the video point and determining whether the cascade path is idle, it may also be determined whether there is a cascade path that satisfies the priority condition, which includes the following two ways:
the first method is as follows:
the step S1022 may include:
if no idle cascade path exists, judging whether cascade paths meeting priority conditions exist in all the determined cascade paths; the priority condition is that the priorities of the users corresponding to all the video trunk lines forming the cascade channel are lower than the priority of the current user;
if the cascade connection path meeting the priority condition does not exist, judging whether the cascade connection path meeting the video importance condition of the monitoring point exists in all the determined cascade connection paths.
Under the condition that no idle cascade path exists, whether a cascade path meeting the priority condition exists or not can be judged, and under the condition that no cascade path meeting the priority condition exists, whether a cascade path meeting the video importance condition of the monitoring point is judged or not. By adding the process of judging the priority condition, the probability of finding the cascade path meeting the condition is increased.
Specifically, the method may further include:
and if the cascade paths meeting the priority condition exist, selecting the cascade path with the optimal video trunk quality as the cascade path corresponding to the current user from the cascade paths meeting the priority condition.
The second method comprises the following steps:
if the cascade connection path which meets the video importance condition of the monitoring point location does not exist, judging whether the cascade connection path which meets the priority condition exists in all the determined cascade connection paths; the priority condition is that the priorities of the users corresponding to all the video trunk lines forming the cascade channel are lower than the priority of the current user;
and if the cascade paths meeting the priority condition exist, selecting the cascade path with the optimal video trunk quality as the cascade path corresponding to the current user from the cascade paths meeting the priority condition.
The second mode is similar to the first mode, and a process for judging the priority condition is also added, different from the first mode, the judgment of the priority condition is executed under the condition that the video importance condition of the monitoring point is not met, namely, the execution sequence of the second mode is different from that of the first mode. In practical application, a user priority needs to be allocated to all users using the video monitoring system, the priority represents the priority of the users using the video trunk, a monitoring point video importance value needs to be allocated to each monitoring point monitoring device, and a video trunk quality value needs to be allocated to each video trunk.
In specific implementation, if there is no idle cascade path, no cascade path satisfying the video importance condition of the monitoring point, or no cascade path satisfying the priority condition among all the determined cascade paths, other determination conditions may be added to select a cascade path, or a play request of the current user may be rejected, for example, a friendly manner may be adopted to prompt the user that "no available cascade path exists, and the video requested by the user cannot be played".
The following describes, in conjunction with fig. 3 and fig. 4, specific implementation steps of the above-mentioned video trunk management method according to an embodiment of the present invention in detail:
referring to fig. 3, the video trunk management method provided in the embodiment of the present invention may be executed according to the following steps:
step S201: determining all cascade channels from the monitoring point position monitoring equipment to be played to the target monitoring equipment according to the playing request of the current user;
step S202: judging whether idle cascade paths exist in all the determined cascade paths; if yes, go to step S205; if not, executing step S203;
step S203: judging whether cascade paths meeting priority conditions exist in all the determined cascade paths; if yes, go to step S205; if not, executing step S204;
step S204: judging whether cascade paths meeting the video importance condition of the monitoring point location exist in all the determined cascade paths; if yes, go to step S205; if not, go to step S206;
step S205: selecting a cascade connection path with the optimal quality of a video trunk line as a cascade connection path corresponding to a current user;
step S206: the user's play request is denied.
In a specific implementation, the above steps S203 and S204 may also exchange positions, as shown in fig. 4, the order of the steps S203 and S204 may be determined according to the degree of attention of the user to the importance degree and priority of the monitoring point location, for example, if the user pays more attention to the importance degree of the monitoring point location, the step S204 may be placed before the step S203.
Further, after the cascade channel corresponding to the current user is determined, the video matrix device associated with the video trunk lines forming the cascade channel is controlled to switch the video to the video trunk line corresponding to the device, meanwhile, the occupant information of the video trunk lines forming the cascade channel is updated to the information of the current user, and the video information transmitted by the video trunk lines is updated to the video information of the monitoring point position monitoring device requested to be played by the current user. Therefore, the transmission and display of the video information requested to be played by the current user on the target monitoring equipment can be completed, and the distribution application management of the video trunk line of the matrix networking system is realized.
In practical applications, in the above-mentioned video trunk management method provided by the embodiment of the present invention, the step S101 may include (not shown in the figure):
s1011, constructing a video trunk connection diagram of the video monitoring system;
and S1012, determining all cascade paths from the monitoring point position monitoring equipment corresponding to the playing request to the target monitoring equipment according to the video trunk communication diagram and the playing request of the current user.
By constructing the video trunk connection diagram of the monitoring system, all cascade paths corresponding to the playing request of the user can be accurately and quickly found by utilizing the video trunk connection diagram subsequently according to the playing request of the user.
Specifically, the video trunk connection diagram of the video monitoring system may be constructed in the following manner, with reference to fig. 5, including:
s301, numbering monitoring equipment of each monitoring point position, an input port and an output port of each video matrix and monitoring equipment in a video monitoring system according to a preset sequence;
s302, creating a two-dimensional array; the number of rows and columns of the two-dimensional array is the sum of the number of monitoring point position monitoring equipment, the number of input ports and output ports of a video matrix and the number of monitoring equipment;
and S303, respectively marking the communication relation between each monitoring point position monitoring device and each video matrix input port, the communication relation between each video matrix input port and each video matrix output port and the communication relation between each video matrix output port and the monitoring device in the two-dimensional array to obtain a video trunk communication diagram of the video monitoring system.
In the step S301, the monitoring point location monitoring device, the video matrix input port and the output port, and the monitoring device in the video monitoring system may be numbered in sequence from 0, and the maximum number is max, where the numbering sequence is a preset sequence, which may be determined according to an actual situation, and the numbering sequence is not limited here;
in the step S302, the number of rows and columns of the two-dimensional array is max, and the two-dimensional array may be represented by N [ max ] [ max ];
in step S303, the specific method for obtaining the video trunk connection diagram includes:
the marking method of the communication relation between each monitoring point position monitoring device and each video matrix input port comprises the following steps: in a video matrix networking system, if a video trunk line exists between monitoring point position monitoring equipment and a video matrix input port, if the number of the monitoring point position monitoring equipment is x, and the number of the video matrix input port is y, the value of an element Nx y is marked as 1 in the two-dimensional array, which indicates that the monitoring point position monitoring equipment with the number of x and the video matrix input port with the number of y have a video communication relation, and a video signal can be transmitted to the video matrix input port y by the monitoring point position monitoring equipment x;
the method for marking the communication relation between the input port and the output port of each video matrix comprises the following steps: in a video matrix networking system, if a video matrix input port and a video matrix output port belong to an input port and an output port on a video matrix device or the video matrix input port and the video matrix output port belong to an input port and an output port on a video trunk line, if the number of the video matrix input port is m and the number of the video matrix output port is N, in the two-dimensional array, the value of an element N [ m ] [ N ] is 1, which indicates that the video matrix input port with the number of m and the video matrix output port with the number of N have a video communication relation, and a video signal can be transmitted to the video matrix output port N from the video matrix input port m;
the marking method of the communication relation between each video matrix output port and the monitoring equipment comprises the following steps: in a video matrix networking system, if a video trunk exists between a video matrix output port and a monitoring device, if the number of the video matrix output port is p, and the number of the monitoring device is q, the value of an element N [ p ] [ q ] is 1 in the two-dimensional array, which indicates that the video matrix output port with the number p and the monitoring device with the number q have a video communication relation, and a video signal can be transmitted to the monitoring device q through the video matrix output port p.
And marking all elements in the two-dimensional array according to the steps to obtain a video trunk connection diagram of the video monitoring system.
According to the video trunk link diagram obtained by the method, the communication relation between each monitoring point position monitoring device and each video matrix input port, the communication relation between each video matrix input port and each video matrix output port, and the communication relation between each video matrix output port and the monitoring device are determined, so that all cascade paths corresponding to the playing request can be obtained according to the monitoring point position monitoring device and the target monitoring device corresponding to the playing request of the user. The steps S301 to S303 are only preferred embodiments provided in the embodiment of the present invention, and in specific implementation, other manners may also be used to determine the communication relationship between the monitoring point location monitoring device and the target monitoring device.
The following describes the above specific process for constructing a video trunk connection diagram in detail by way of example:
taking the video matrix networking system shown in fig. 2 as an example, first, numbering is performed on each monitoring point monitoring device 202, video matrix 201, and monitoring device 203 in the system, as shown in fig. 6, the monitoring devices connected with the first video matrix are numbered 1-4, the monitoring devices connected with the second video matrix are numbered 5 and 6, the monitoring devices 203 connected with the first video matrix are numbered 7 and 8, the first video matrix is numbered 9, the second video matrix is numbered 10, and the monitoring devices 203 connected with the second video matrix are numbered 11-14;
according to the structure of the video matrix networking system shown in fig. 6, the video transmission direction is represented as a directed graph shown in fig. 7, in the graph, a circle represents the number of the monitoring device, a triangle represents the number of the video matrix, and a square represents the number of the monitoring device, and according to the direction of an arrow in the graph, it can be obviously seen which devices have a communication relationship, so that a cascade path can be conveniently found, for example, the cascade path from the monitoring device 1 to the monitoring device 12 is: in order to find the cascade path between the monitoring device 1, the video matrix 9, the video matrix 10, and the monitoring device 12 more accurately and quickly, the directed path in fig. 7 may also be represented by a two-dimensional matrix, as shown in table 1:
table 1 two-dimensional matrix corresponding to fig. 7
In the two-dimensional matrix in table 1, the number of the horizontal and vertical digits is the number of each device in fig. 7, and the value (0 or 1) at the coordinate point in table 1 indicates whether or not a path exists between two devices, 1 indicates that a path exists, and 0 indicates that a path does not exist. For example, the value of the coordinate point (9, 2) is 1, which indicates that the monitoring device 2 has a path to the video matrix 9; the value of the coordinate point (9, 5) is 0, indicating that the monitoring device 5 has no path to the video matrix 9.
By way of example, a directed graph is formed by video trunks in the video matrix networking system, and all directed paths between any two devices in the graph can be calculated through a correlation algorithm of the graph. In a video matrix networking system, the directed path is that the video of the monitoring point location is displayed on the monitoring equipment, and the video of the monitoring equipment of any monitoring point location can be transmitted to any monitoring equipment for display by uniformly controlling and switching the video matrix on the whole path. For example, by using the shortest path algorithm of the graph, the video transmission path from the monitoring device 1 to the monitoring device 13 can be calculated: (1) - > (9) - > (10) - > (13), the display of the monitoring device 1 on the monitoring device 13 can be realized by switching the video signals to the corresponding video trunk by the control matrix 9 and the video matrix 10.
Through the analysis of the video matrix networking system, the mathematical model of the video trunk connection diagram of the video matrix networking system is described as follows:
denote the set of monitoring point location monitoring devices as { C1，C2，…，CxThe set of video matrix video input ports is denoted as { I }1，I2，…，ImThe set of video matrix video output ports is denoted as { O }1，O2，…，OnDenoted as { M } for the set of monitoring devices1，M2，…，MyAnd constructing a two-dimensional matrix N with row and column sizes of x + m + N + y, as shown in Table 2:
TABLE 2 mathematical model of video trunk connectivity graph for video matrix networking system
nijIs the element of i row and j column in a two-dimensional matrix, and the element n in the two-dimensional matrixijIs representative of the video connectivity between the two of the monitoring device, the input and output ports of the video matrix, and the monitoring device, e.g. nijWhen the number n is 1, it indicates that there is a connection between the two, and the video signal flows from the device with the number i to the device with the number j, nijWhen the value is 0, it indicates that there is no video connectivity between the two, and the video signal cannot flow from the device numbered i to the device numbered j.
Based on the same inventive concept, embodiments of the present invention provide a video trunk line management apparatus for a video monitoring system, and since the principle of the video trunk line management apparatus for solving the problem is similar to that of the video trunk line management method, the implementation of the video trunk line management apparatus may refer to the implementation of the video trunk line management method, and repeated details are omitted.
As shown in fig. 8, a video trunk management apparatus of a video monitoring system according to an embodiment of the present invention includes:
a cascade path determining module 401, configured to determine, according to a play request of a current user, all cascade paths from a monitoring point location monitoring device corresponding to the play request to a target monitoring device; the cascade path is a directed path for transmitting a video signal of the monitoring point position monitoring equipment to the target monitoring equipment through the video matrix and the video trunk;
a first determining module 402, configured to determine whether a cascade path meeting the video importance condition of the monitoring point exists in all the determined cascade paths; the condition of the importance of the monitoring point video is that the importance of the monitoring point video currently transmitted by all video trunk lines forming the cascade connection path is lower than the importance of the monitoring point video requested to be played by the current user;
the first determining module 403 is configured to select, if the cascade path exists, a cascade path with the best quality of the video trunk line from the cascade paths meeting the condition of the importance of the video at the monitoring point as the cascade path corresponding to the current user.
Specifically, in the video trunk management apparatus of the video monitoring system provided in the embodiment of the present invention, the first determining module 402 is configured to:
judging whether idle cascade paths exist in all the determined cascade paths;
and if no idle cascade path exists, judging whether cascade paths meeting the video importance condition of the monitoring point location exist in all the determined cascade paths.
Further, the video trunk management device of the video monitoring system provided in the embodiment of the present invention further includes:
and the second determining module is used for selecting the cascade path with the optimal video trunk quality as the cascade path corresponding to the current user in the idle cascade paths if the idle cascade paths exist.
More specifically, in the video trunk management apparatus of the video monitoring system provided in the embodiment of the present invention, the first determining module 402 is specifically configured to:
if no idle cascade path exists, judging whether cascade paths meeting priority conditions exist in all the determined cascade paths; the priority condition is that the priorities of the users corresponding to all the video trunk lines forming the cascade channel are lower than the priority of the current user;
if the cascade connection path meeting the priority condition does not exist, judging whether the cascade connection path meeting the video importance condition of the monitoring point exists in all the determined cascade connection paths.
In specific implementation, the video trunk management device of the video monitoring system provided in the embodiment of the present invention further includes:
and the third determining module is used for selecting the cascade access with the optimal video trunk quality as the cascade access corresponding to the current user from the cascade accesses meeting the priority condition if the cascade access meeting the priority condition exists.
Further, the video trunk management device of the video monitoring system provided in the embodiment of the present invention further includes:
the third judging module is used for judging whether cascade paths meeting priority conditions exist in all the determined cascade paths if cascade paths meeting the monitoring point video importance conditions do not exist; the priority condition is that the priorities of the users corresponding to all the video trunk lines forming the cascade channel are lower than the priority of the current user;
and the fourth determining module is used for selecting the cascade path with the optimal video trunk quality as the cascade path corresponding to the current user from the cascade paths meeting the priority condition if the cascade paths meeting the priority condition exist.
Furthermore, in the video trunk management apparatus of the video monitoring system provided in the embodiment of the present invention, the determining module includes:
the communication graph building module is used for building a video trunk communication graph of the video monitoring system;
and the cascade path determining submodule is used for determining all cascade paths from the monitoring point position monitoring equipment corresponding to the playing request to the target monitoring equipment according to the video trunk line communication diagram and the playing request of the current user.
In practical application, in the video trunk management apparatus of the video monitoring system provided in the embodiment of the present invention, the connectivity graph constructing module includes:
the numbering unit is used for numbering each monitoring point monitoring device, each video matrix input port and output port in the video monitoring system and each monitoring device according to a preset sequence;
the array creating unit is used for creating a two-dimensional array; the number of rows and columns of the two-dimensional array is the sum of the number of monitoring point position monitoring equipment, the number of input ports and output ports of the video matrix and the number of monitoring equipment;
and the communication relation determining unit is used for respectively marking the communication relation between each monitoring point position monitoring device and each video matrix input port, the communication relation between each video matrix input port and each video matrix output port and the communication relation between each video matrix output port and the monitoring device in the two-dimensional array to obtain a video trunk communication diagram of the video monitoring system.
The video trunk line management method and the device provided by the embodiment of the invention adopt the technical elements of the importance condition of the monitoring point video, the quality of the priority condition video trunk line and the like, so that the video trunk line management is more reasonable, and the effect of the video image played by the target monitoring equipment is better.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (14)
1. A video trunk management method of a video monitoring system is characterized by comprising the following steps:
determining all cascade channels from the monitoring point position monitoring equipment corresponding to the playing request to the target monitoring equipment according to the playing request of the current user; the cascade path is a directed path for transmitting a video signal of the monitoring point position monitoring equipment to the target monitoring equipment through the video matrix and the video trunk;
judging whether cascade paths meeting the video importance condition of the monitoring point location exist in all the determined cascade paths; the condition of the importance degree of the monitoring point location video is that the importance degree of the monitoring point location video currently transmitted by all video trunk lines forming the cascade connection path is lower than the importance degree of the monitoring point location video requested to be played by a current user;
if the cascade connection path exists, selecting the cascade connection path with the optimal quality of the video trunk line as the cascade connection path corresponding to the current user from the cascade connection paths meeting the video importance condition of the monitoring point;
the determining, according to the play request of the current user, all cascade paths from the monitoring point location monitoring device corresponding to the play request to the target monitoring device includes:
constructing a video trunk connection diagram of the video monitoring system;
and determining all cascade paths from the monitoring point position monitoring equipment corresponding to the playing request to the target monitoring equipment according to the video trunk communication diagram and the playing request of the current user.
2. The method according to claim 1, wherein said determining whether there is a cascade path that satisfies the video importance condition of the monitored point location in all the determined cascade paths includes:
judging whether idle cascade paths exist in all the determined cascade paths;
and if no idle cascade path exists, judging whether cascade paths meeting the video importance condition of the monitoring point location exist in all the determined cascade paths.
3. The method of claim 2, further comprising:
and if the idle cascade connection path exists, selecting the cascade connection path with the optimal video trunk quality as the cascade connection path corresponding to the current user in the idle cascade connection path.
4. The method according to claim 2, wherein if there is no idle cascade path, determining whether there is a cascade path that satisfies the video importance condition of the monitoring point location in all the determined cascade paths, including:
if no idle cascade path exists, judging whether cascade paths meeting priority conditions exist in all the determined cascade paths; the priority condition is that the priorities of users corresponding to all video trunk lines forming the cascade channel are lower than the priority of the current user;
if the cascade connection path meeting the priority condition does not exist, judging whether the cascade connection path meeting the video importance condition of the monitoring point exists in all the determined cascade connection paths.
5. The method of claim 4, further comprising:
and if the cascade paths meeting the priority condition exist, selecting the cascade path with the optimal video trunk quality as the cascade path corresponding to the current user from the cascade paths meeting the priority condition.
6. The method of claim 2, further comprising:
if the cascade connection path which meets the video importance condition of the monitoring point location does not exist, judging whether the cascade connection path which meets the priority condition exists in all the determined cascade connection paths; the priority condition is that the priorities of users corresponding to all video trunk lines forming the cascade channel are lower than the priority of the current user;
and if the cascade paths meeting the priority condition exist, selecting the cascade path with the optimal video trunk quality as the cascade path corresponding to the current user from the cascade paths meeting the priority condition.
7. The method of claim 1, wherein the video trunk connectivity graph of the video surveillance system is constructed as follows:
numbering monitoring equipment of each monitoring point position, input ports and output ports of each video matrix and monitoring equipment in the video monitoring system according to a preset sequence;
creating a two-dimensional array; the number of rows and columns of the two-dimensional array is the sum of the number of monitoring point position monitoring equipment, the number of input ports and output ports of a video matrix and the number of monitoring equipment;
and respectively marking the communication relation between each monitoring point position monitoring device and each video matrix input port, the communication relation between each video matrix input port and each video matrix output port and the communication relation between each video matrix output port and the monitoring device in the two-dimensional array to obtain a video trunk communication diagram of the video monitoring system.
8. A video trunk management apparatus of a video surveillance system, comprising:
the cascade connection path determining module is used for determining all cascade connection paths from the monitoring point position monitoring equipment corresponding to the playing request to the target monitoring equipment according to the playing request of the current user; the cascade path is a directed path for transmitting a video signal of the monitoring point position monitoring equipment to the target monitoring equipment through the video matrix and the video trunk;
the first judgment module is used for judging whether cascade paths meeting the video importance condition of the monitoring point location exist in all the determined cascade paths; the condition of the importance degree of the monitoring point location video is that the importance degree of the monitoring point location video currently transmitted by all video trunk lines forming the cascade connection path is lower than the importance degree of the monitoring point location video requested to be played by a current user;
the first determining module is used for selecting the cascade connection path with the optimal video trunk quality as the cascade connection path corresponding to the current user from the cascade connection paths meeting the video importance condition of the monitoring point location if the cascade connection path exists;
the cascade path determining module includes:
the communication graph building module is used for building a video trunk communication graph of the video monitoring system;
and the cascade path determining submodule is used for determining all cascade paths from the monitoring point position monitoring equipment corresponding to the playing request to the target monitoring equipment according to the video trunk line communication diagram and the playing request of the current user.
9. The apparatus of claim 8, wherein the first determining module is configured to:
judging whether idle cascade paths exist in all the determined cascade paths;
and if no idle cascade path exists, judging whether cascade paths meeting the video importance condition of the monitoring point location exist in all the determined cascade paths.
10. The apparatus of claim 9, further comprising:
and the second determining module is used for selecting the cascade path with the optimal video trunk quality as the cascade path corresponding to the current user in the idle cascade paths if the idle cascade paths exist.
11. The apparatus of claim 9, wherein the first determining module is specifically configured to:
if no idle cascade path exists, judging whether cascade paths meeting priority conditions exist in all the determined cascade paths; the priority condition is that the priorities of users corresponding to all video trunk lines forming the cascade channel are lower than the priority of the current user;
if the cascade connection path meeting the priority condition does not exist, judging whether the cascade connection path meeting the video importance condition of the monitoring point exists in all the determined cascade connection paths.
12. The apparatus of claim 11, further comprising:
and the third determining module is used for selecting the cascade access with the optimal video trunk quality as the cascade access corresponding to the current user from the cascade accesses meeting the priority condition if the cascade access meeting the priority condition exists.
13. The apparatus of claim 9, further comprising:
the third judging module is used for judging whether cascade paths meeting priority conditions exist in all the determined cascade paths if cascade paths meeting the monitoring point video importance conditions do not exist; the priority condition is that the priorities of users corresponding to all video trunk lines forming the cascade channel are lower than the priority of the current user;
and the fourth determining module is used for selecting the cascade path with the optimal video trunk quality as the cascade path corresponding to the current user from the cascade paths meeting the priority condition if the cascade paths meeting the priority condition exist.
14. The apparatus of claim 8, wherein the connectivity graph building module comprises:
the numbering unit is used for numbering monitoring equipment of each monitoring point position, input ports and output ports of each video matrix and monitoring equipment in the video monitoring system according to a preset sequence;
the array creating unit is used for creating a two-dimensional array; the number of rows and columns of the two-dimensional array is the sum of the number of monitoring point position monitoring equipment, the number of input ports and output ports of a video matrix and the number of monitoring equipment;
and the communication relation determining unit is used for respectively marking the communication relation between each monitoring point position monitoring device and each video matrix input port, the communication relation between each video matrix input port and each video matrix output port and the communication relation between each video matrix output port and the monitoring device in the two-dimensional array to obtain a video trunk communication diagram of the video monitoring system.
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