CN106385560B - Video monitoring system and method - Google Patents
Video monitoring system and method Download PDFInfo
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- CN106385560B CN106385560B CN201610843607.5A CN201610843607A CN106385560B CN 106385560 B CN106385560 B CN 106385560B CN 201610843607 A CN201610843607 A CN 201610843607A CN 106385560 B CN106385560 B CN 106385560B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/70—Media network packetisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/75—Media network packet handling
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Abstract
The invention discloses a video monitoring system and a method, wherein the system comprises: n video source devices, N video processors, N display devices and a monitoring computer; the N video processors are respectively in one-to-one communication with N video source devices and N display devices, N is more than or equal to 1, and N is an integer; the video source equipment is used for shooting pictures of a monitored target scene and coding the shot pictures to form video stream data; the video processor is used for responding to the video monitoring operation triggered by the user through the monitoring computer, decoding the video stream data and forming video monitoring data; and the display equipment is used for displaying the monitoring image according to the video monitoring data. The invention realizes the purpose of video monitoring based on the video monitoring system with high-efficiency resource utilization, convenient capacity expansion and convenient centralized control.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a video monitoring system and a video monitoring method.
Background
Referring to a schematic diagram of a video monitoring system shown in fig. 1, a conventional large-scale video monitoring system includes a plurality of hard disk video recorders, a monitoring computer, a plurality of video decoders, a plurality of network cameras/machines, a plurality of network devices, and a plurality of display devices. The working principle of the system is as follows: the method is characterized in that a hard disk video recorder is utilized to decode and display multi-picture images of videos collected by a plurality of network cameras/machines connected in a local area network consisting of network equipment through one display device in a picture segmentation mode. Specifically, when more than two display devices are required to perform large-screen display, because the maximum number of the display devices connectable to the hard disk video recorder is two, the network device needs to access a video decoder to decode video encoded data output by the network camera/machine and output the decoded video encoded data to the display device to realize large-screen image display; when the number of the network cameras/machines connected into one network device exceeds the maximum number of the hard disk video recorders, the number of the hard disk video recorders needs to be increased, and centralized and unified scheduling and control are performed by the monitoring computer. However, the hard disk recorder has the following problems:
1. when the maximum support quantity of the hard disk video recorder to the network cameras/machines is larger than the quantity of the network cameras/machines required by the user, the resource waste of the hard disk video recorder is caused;
2. when the actual number of the network cameras/machines exceeds the maximum support path number of the hard disk video recorders communicated with the network cameras/machines, a new hard disk video recorder needs to be added, the hard disk video recorders serve as core equipment of the whole monitoring system and have the functions of scheduling and controlling the monitoring system, but the hard disk video recorders are mutually independent and cannot communicate with each other, so that two or more hard disk video recorders can be scheduled and controlled in a centralized and unified manner only by adding a monitoring computer in the video monitoring system, and the capacity expansion inconvenience of the monitoring system is caused;
3. because the hard disk video recorder can only support the image display of at most two display devices, when more than two display devices are needed to display a large screen, the video decoder is required to be connected to a local area network formed by network devices to decode the video stream of the network camera/machine and output the decoded video stream to the display devices to realize the decoding display of the image, which causes the inconvenience of increasing the display of the large screen in the system; in addition, although a video decoder is added in the monitoring system, the hard disk video recorder cannot perform centralized and unified scheduling and control on the video decoder, so that the problem of poor centralized control capability of the system is caused.
In summary, the existing video monitoring system has been unable to satisfy the increasing and increasing demands of users for efficient resource utilization, capacity expansion convenience, centralized control convenience, etc. of the large-scale monitoring system.
Disclosure of Invention
In view of this, embodiments of the present invention mainly aim to provide a video monitoring system and method, which achieve the purpose of video monitoring based on a video monitoring system with efficient resource utilization, convenient capacity expansion and convenient centralized control.
The embodiment of the invention provides a video monitoring system, which is characterized by comprising the following components: n video source devices, N video processors, N display devices and a monitoring computer; the N video processors are respectively in one-to-one communication with N video source devices and N display devices, N is more than or equal to 1, and N is an integer;
the video source equipment is used for shooting pictures of a monitored target scene and coding the shot pictures to form video stream data;
the video processor is used for responding to the video monitoring operation triggered by the user through the monitoring computer, decoding the video stream data and forming video monitoring data;
and the display equipment is used for displaying the monitoring image according to the video monitoring data.
Optionally, the video processor is further configured to encode the video monitoring data in response to a video recording operation triggered by a user through the monitoring computer, so as to form video recording data;
and the monitoring computer is used for storing the video recording data to form a video recording file.
Optionally, the video processor is further configured to respond to a video file playback operation triggered by a user through the monitoring computer, and decode the video file sent by the monitoring computer;
the display equipment is used for displaying the video image according to the decoded video file;
alternatively, the first and second electrodes may be,
the video processor is also used for responding to the video file playing operation triggered by the user through the monitoring computer and decoding the video file sent by the monitoring computer;
and the display equipment is used for displaying the video image according to the decoded video file.
Optionally, the video processor includes: a codec integrated circuit IC;
and the video processor is used for carrying out hardware coding and decoding on the received video data by utilizing the coding and decoding IC.
Optionally, the video processor further includes:
the on-chip memory is used for storing coding and decoding instructions;
the off-chip memory is used for storing control instructions of hardware coding and decoding;
and the microprocessor is used for calling the coding and decoding instructions stored in the on-chip memory to control the coding and decoding IC to carry out hardware coding and decoding by executing the control instructions.
Optionally, the monitoring computer includes: a computer processor and a display;
the display is used for displaying a human-computer interaction interface;
and the computer processor is used for receiving an operation instruction triggered by a user on the human-computer interaction interface and controlling the video processor to carry out coding and decoding operations according to the operation instruction.
Optionally, the display is further configured to display a monitoring image according to the video monitoring data.
The embodiment of the invention also provides a video monitoring method, which is applied to a video monitoring system, and the system comprises: n video source devices, N video processors, N display devices and a monitoring computer; the N video processors are respectively in one-to-one communication with N video source devices and N display devices, N is more than or equal to 1, and N is an integer; the method comprises the following steps:
the video source equipment shoots pictures of a monitored target scene and encodes the shot pictures to form video stream data;
the video processor responds to the video monitoring operation triggered by the user through the monitoring computer, decodes the video stream data and forms video monitoring data;
and the display equipment displays the monitoring image according to the video monitoring data.
Optionally, the method further includes:
the video processor responds to a video recording operation triggered by a user through the monitoring computer, and encodes the video monitoring data to form video recording data;
and the monitoring computer stores the video recording data to form a video recording file.
Optionally, the method further includes:
the video processor responds to a video file playback operation triggered by a user through the monitoring computer, and decodes the video file sent by the monitoring computer;
the display equipment displays the video image according to the decoded video file;
alternatively, the first and second electrodes may be,
the video processor responds to the video file playing operation triggered by the user through the monitoring computer, and decodes the video file sent by the monitoring computer;
and the display equipment displays the video image according to the decoded video file.
Optionally, the video processor includes: a codec integrated circuit IC; the video processor performs coding and decoding according to the following modes:
and the video processor performs hardware coding and decoding on the received video data by utilizing the coding and decoding IC.
Optionally, the video processor further includes: the on-chip memory is used for storing coding and decoding instructions, the off-chip memory is used for storing control instructions of hardware coding and decoding, and the microprocessor is used for processing the control instructions; the video processor performs hardware encoding and decoding on the received video data by using the encoding and decoding IC, and comprises the following steps:
and the microprocessor calls the coding and decoding instructions stored in the on-chip memory to control the coding and decoding IC to carry out hardware coding and decoding by executing the control instructions.
Optionally, the monitoring computer includes: a computer processor and a display for displaying a human-computer interaction interface; the method further comprises the following steps:
and the computer processor receives an operation instruction triggered by a user on the man-machine interaction interface and controls the video processor to carry out coding and decoding operations according to the operation instruction.
Optionally, the method further includes: and the display displays a monitoring image according to the video monitoring data.
The embodiment of the invention provides a video monitoring system and a method, wherein the system comprises: the system comprises N video source devices, N video processors, N display devices and a monitoring computer, wherein the N video processors are respectively in one-to-one communication with the N video source devices and the N display devices; the video source equipment is used for shooting pictures of a monitored target scene and coding the shot pictures to form video stream data; the video processor is used for responding to the video monitoring operation triggered by the user through the monitoring computer, decoding the video stream data and forming video monitoring data; and the display equipment is used for displaying the monitoring image according to the video monitoring data. Therefore, the problem of resource waste in the prior art is solved by performing one-to-one decoding processing on the video coding data output by a video source device through a video processor; in addition, only the video processor, the video source equipment and the display equipment need to be added in a set, and the monitoring computer is adopted to carry out centralized control on all the video processors, so that the capacity expansion and the control of the monitoring system are facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a video surveillance system according to the prior art;
FIG. 2 is a schematic diagram of a video surveillance system according to an embodiment of the present invention;
FIG. 3 is a second schematic diagram of a video surveillance system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a monitoring computer according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a computer storage device according to an embodiment of the present invention;
FIG. 6 is a block diagram of a video processor according to an embodiment of the present invention;
FIG. 7 is a schematic view of a carrier of a codec circuit board according to an embodiment of the invention;
FIG. 8 is a third schematic diagram of a video surveillance system according to an embodiment of the present invention;
fig. 9 is a flowchart illustrating a video monitoring method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, a video monitoring system provided in an embodiment of the present invention includes: n video source devices, N video processors, N display devices and a monitoring computer; the video processor comprises N video source devices, N video processor, a monitoring computer and N video processors, wherein N is more than or equal to 1 and is an integer, the N video processors are respectively in one-to-one communication with the N video source devices and the N display devices, namely, each video processor is in communication with the corresponding video source device through the front-end network device, and each video processor is in communication with the monitoring computer through the rear-end network device.
The embodiment of the invention adopts the monitoring computer with the centralized control capability of the monitoring system to control the video monitoring system, and performs centralized and unified scheduling and control on the video monitoring system through the monitoring computer, so that the video processor performs coding and decoding processing on the video stream acquired from the corresponding video source equipment and outputs the decoded video signal to the corresponding display equipment to realize image display, and the video signal after the coding processing is transmitted to the hard disk of the monitoring computer to be stored, thereby realizing the processes of image decoding display and coded video storage. Therefore, the video data output by the video source equipment is subjected to one-to-one coding and decoding processing through the video processor, and the video data output by the video processor is subjected to one-to-one display through the display equipment, so that the utilization rate of system resources is improved, the problem of resource waste is solved, and the capacity expansion convenience and centralized control convenience of the large-scale monitoring system are realized. Therefore, the embodiment of the invention can carry out coding and decoding processing on the video stream of the video source equipment by controlling the video processor by the monitoring computer, and can meet the requirements of more and more monitoring systems and higher quality of users.
The following specifically describes embodiments of the present invention.
Referring to the video surveillance system shown in fig. 3, the functions and communication relationships among the surveillance computer 1, the video processor 2, the video source device 3, the front-end network device 4, the back-end network device 5, and the display device 6 shown in fig. 2 will be described below:
the video source device 3, which may be a network camera or other device, is configured to perform picture shooting on a monitored target scene, and encode the shot picture to form video stream data. For example, pictures are shot at a road intersection, and the pictures are encoded to form a video stream which is transmitted to the video processor 2 through the front-end network device 4; in this embodiment, the number of video source devices 3 can be arbitrarily increased according to the demand of the video monitoring system for the monitoring point, and is not limited by the video monitoring system.
The monitoring computer 1 is used for executing a monitoring system control program stored inside, and performing centralized and unified scheduling and control on the operation of the video processor 2, so as to realize centralized and unified scheduling and control on the video monitoring system.
The front-end network device 4 is used for carrying out network protocol transmission on the video stream provided by the video source device 3 to the video processor 2, so that one video source device 3 can be connected with one front-end network device 4, and a plurality of video source devices 3 can be connected with one front-end network device 4; the number of the front-end network devices 4 can be increased arbitrarily according to the number demand of the video monitoring system on the video source devices 3, and is not limited by the video monitoring system.
A back-end network device 5, configured to perform network protocol transmission on the monitoring image data and the video data provided by the video processor 2 to the monitoring computer 1, so that one video processor 2 may be connected to one back-end network device 5, and multiple video processors 2 may also be connected to one back-end network device 5; the number of the back-end network devices 5 can be increased arbitrarily according to the number requirement of the video monitoring system for the video processors 2, and is not limited by the video monitoring system.
The video processor 2 is configured to perform multifunctional encoding and decoding processing of image decoding, video encoding (encoding image decoding data to form a video file), video file playback decoding (decoding encoded data in the video file to implement a function of playing video), and video file play decoding (decoding encoded data in other video files to implement a function of playing video) on a video stream signal provided by the video source device 3 through the front-end network device 4, and output the decoded video signal to the display device 6 to implement image display. Because the video processors 2 and the video source devices 3 adopt a one-to-one communication mode, each video processor 2 only encodes and decodes the video stream provided by the video source device 3 correspondingly communicated with the video processor, the number of the video processors 2 can be increased at will according to the requirements of the video monitoring system on the video source devices 3, and the video processors are not limited by the video monitoring system; the video processors 2 can work independently at the same time or at different times, and the video processors 2 can also receive centralized and unified scheduling and control of the monitoring computer 1.
A display device 6, which may be a large-screen television or other device, for playing the video signal decoded and processed by the video processor 2 to realize video image display; the number of the display devices 6 can be increased arbitrarily according to the requirement of the video monitoring system for the large-screen display number, and is not limited by the video monitoring system.
In the embodiment of the present invention, since the monitoring computer 1 can perform centralized and unified scheduling and control on the operations of the video processors 2, a user can operate the monitoring computer 1 to enable each video processor 2 to implement the following functions:
first, a video display function is monitored. The user can trigger the image monitoring function on the human-computer interaction interface displayed by the monitoring computer 1, at this time, the video processor 2 can decode the video coding data continuously transmitted by the video source device 3 in real time, and transmit the decoded data to the display device 6 for real-time monitoring and displaying, that is, the video processor 2 and the display device 6 respectively realize the following functions:
the video processor 2 is configured to decode video stream data output by the video source device 3 in response to a video monitoring operation triggered by a user through the monitoring computer 1, and form video monitoring data;
and the display device 6 is used for displaying the monitoring image according to the video monitoring data.
Secondly, the method comprises the following steps: and (5) a video recording function. The user can trigger the video recording function on the human-computer interaction interface displayed by the monitoring computer 1, and when the video processor 2 decodes the video encoding data continuously transmitted by the video source equipment 3, the video processor 2 can encode the decoded data according to the preset encoding requirement and transmit the encoded data into the monitoring computer 1 to be stored as a video recording file, namely, the video processor 2 and the monitoring computer 1 respectively realize the following functions:
the video processor 2 is further configured to encode the video monitoring data in response to a video recording operation triggered by the user through the monitoring computer 1 to form video recording data;
and the monitoring computer 1 is used for storing the video recording data to form a video recording file.
Thirdly, the method comprises the following steps: and playing the video file. The user can trigger the video file playing function on the human-computer interaction interface displayed by the monitoring computer 1, at this time, the monitoring computer 1 transmits the video file selected by the user to the video processor 2 for decoding, and transmits the decoded data to the display equipment 6 for real-time playing and displaying, that is, the video processor 2 and the display equipment 6 respectively realize the following functions:
the video processor 2 is further configured to respond to a video file playback operation triggered by the monitoring computer 1 by a user, and decode the video file sent by the monitoring computer 1;
and the display device 6 is used for displaying the video image according to the decoded video file.
Fourthly: and a video file playing function. The user can trigger the video file playing function on the human-computer interaction interface displayed by the monitoring computer 1, the video file can be any video file stored in the monitoring computer 1, at this time, the monitoring computer 1 transmits the video file selected by the user to the video processor 2 for decoding, and transmits the decoded data to the display device 6 for real-time playing and displaying, namely, the video processor 2 and the display device 6 respectively realize the following functions:
the video processor 2 is further configured to respond to a video file playing operation triggered by the user through the monitoring computer 1, and decode the video file sent by the monitoring computer 1;
and the display device 6 is used for displaying the video image according to the decoded video file.
The following describes constituent modules and components of the monitoring computer 1, the video processor 2, the video source device 3, the front-end network device 4, the back-end network device 5, and the display device 6, and functions of each module and component in detail.
See fig. 4 for a schematic diagram of the composition of the monitoring computer. The monitoring computer 1 includes: the monitoring computer 1 can execute a video monitoring system control program stored in the computer storage device 11 (which can be a hard disk and the like) through the computer processor 12, and perform centralized scheduling and control on the video monitoring system.
Referring to the schematic composition diagram of the computer storage device shown in fig. 5, the computer storage device 11 includes: the system comprises a system general control module 1101, an interactive interface module 1102, a communication module 1103, an image monitoring module 1104, a television wall control module 1105, a storage control module 1106, a video recording retrieval module 1107, a remote playback module 1108, a device control module 1109 and a system configuration module 1110.
See fig. 6 for a schematic diagram of the composition of the video processor. The video processor 2 includes: a coding and decoding circuit board 21, a direct current power supply transformer 22 and a remote controller 23; the video processor 2 may perform image decoding and video encoding on the video stream signal provided by the video source device 3.
Referring to the schematic view of the bearing component of the codec circuit board shown in fig. 7, the codec circuit board 21 is used as a physical carrier of the video processor 2, and is used for bearing, installing, and connecting related circuits and electronic components of the video processor 2, where the circuits and electronic components include: an Integrated Circuit (IC) 2101, a microprocessor 2102, an off-chip memory 2103, an off-chip memory 2104, an on-chip memory 2105, an oscillation circuit 2106, a network chip 2107, a power port and switch circuit 2108, a variety of off-chip resistive-capacitive circuits 2109, a video stream input port 2110, a video output port 2111, a video monitoring port 2112, and a remote control receiver 2113.
In the embodiment of the present invention, the monitoring computer 1, the video processor 2, the video source device 3, the front-end network device 4, the back-end network device 5, and the display device 6 may be connected as follows:
1. the video source device 3 is plugged to the head end network device 4 by a network cable.
2. The video processor 2 is plugged into the head-end network device 4 through a network cable, and specifically may be plugged into the head-end network device 4 through the video stream input port 2110.
3. The video processor 2 is plugged into the backend network device 5 by a transmission line, and specifically may be plugged into the backend network device 5 through the video storage port 2112.
4. The video processor 2 is plugged into the display device 6 by means of a transmission line, in particular into the display device 6 via a video output port 2111.
5. The monitoring computer 1 is plugged into the backend network device 5 by a transmission line.
Based on the above-described components and connection modes of the monitoring computer 1, the video processor 2, the video source device 3, the front-end network device 4, the back-end network device 5, and the display device 6, the video monitoring system shown in fig. 8 is obtained. The operation principle of each functional unit and module of the monitoring computer 1 and the video processor 2 will be described in detail below based on fig. 8.
And the monitoring computer 1 is used for storing and executing a centralized control program of the video monitoring system so as to realize centralized and uniform scheduling and control of the video monitoring system under human-computer interaction. Specifically, the display 13 is configured to display a human-computer interaction interface; the computer processor 12 is configured to receive an operation instruction (that is, the above-mentioned video monitoring display operation, or video recording operation, or video file playback operation, or video file playing operation) triggered by the user on the human-computer interaction interface, and control the video processor 2 to perform encoding and decoding operations according to the operation instruction. In addition, the display 13 is further configured to display a monitoring image according to the video monitoring data output by the video processor 2, specifically, the operation instruction received by the computer processor 12 may also be an instruction of "displaying a monitoring picture on the display 13", and at this time, the video processor 2 transmits the decoded video monitoring data to the display 13 for displaying the monitoring picture.
In this embodiment, the computer processor 12 executes a centralized control program of the video monitoring system in the computer storage device 11, and controls the video processor 2 to perform multi-functional encoding and decoding processing of image decoding, video encoding, video file playback decoding, and video file playing decoding on the video stream signal provided by the video source device 3 through the front-end network device 4; the display 13 is used as a man-machine interaction window when the computer processor 12 executes a centralized control program of the video monitoring system stored in the computer storage device 11, and can realize the centralized scheduling and control of the video monitoring system by the monitoring computer 1, and the image display of an interaction interface and a monitoring picture.
When the computer processor 12 executes the video monitoring system centralized control program in the computer storage device 11, specifically, the system total control module 1101 in the computer storage device 11 is called to call other modules in the computer storage device 11 to complete the following functions:
1. the system master control module 1101 is utilized to call the interactive interface module 1102, display a human-computer interactive interface on the display 13 of the monitoring computer 1, and acquire a monitoring system control instruction triggered by a user on the human-computer interactive interface.
2. The system general control module 1101 calls the communication module 1103 to perform IP address search through the back-end network device 5, and communicate with the video processor 2.
3. The system general control module 1101 calls the image monitoring module 1104, so that an image signal obtained by decoding the video stream provided by the video source device 3 by the video processor 2 is transmitted to the monitoring computer 1 through the back-end network device 5, and the monitor 13 of the monitoring computer 1 performs monitor display by adopting a mode of dividing N1 pictures such as 1 picture, 4 pictures, 9 pictures, 16 pictures and the like, wherein N1 is greater than or equal to 1, and N1 pictures displayed by the display 13 can be pictures shot by N1 video source devices 3 (all or part of the video source devices 3) in the video monitoring system.
4. The system general control module 1101 is utilized to call a video wall control module 1105, and a video wall with N2 pictures, such as 1 picture, 4 pictures, 9 pictures, 16 pictures and the like, which is composed of N2 display devices 6, is used for monitoring display, and can be used for controlling the opening, switching and closing of the pictures, wherein N2 is greater than or equal to 1, and N2 display devices 6 can be all or part of the display devices 6 in the video monitoring system.
5. The system master control module 1101 calls the storage control module 1106, and transmits a video file formed by encoding and recording the video stream provided by the video source device 3 by the video processor 2 to the monitoring computer 1 for storage through the back-end network device 5, and stores the video file in the computer storage device 11.
6. The system general control module 1101 calls a video retrieval module 1107 to retrieve the video files stored in the computer storage device 11.
7. Calling a remote playback module 1108 by using a system general control module 1101 to remotely play back the video files stored in the computer storage device 11, where the remote playback is: the computer processor 12 retrieves the video file from the computer storage device 11, transmits the video file to the video processor 2 through the back-end network device 5 for decoding, and the video processor 2 transmits the decoded video data to the display device 6 for video display.
8. The system master control module 1101 is used for calling an equipment control module 1109, and equipment in the video monitoring system is set and controlled.
9. The system master control module 1101 is used for calling a system configuration module 1110 to perform system setting on the video monitoring system.
The video processor 2 is configured to perform multi-functional encoding and decoding processing such as image decoding, video encoding, video file playback decoding, and video file playing decoding on a video stream signal provided by the video source device 3 through the front-end network device 4, and output a decoded video signal to the display device 6 to implement image display.
Wherein, the dc power transformer 22 in the video processor 2 is used as an independent external plug-in device for providing dc power supply for the video processor 2; the remote controller 23 in the video processor 2 is used as an external independent device for sending a remote sensing control signal instruction to the video processor 2 to realize the control of the video processor 2 under human-computer interaction, for example, the remote controller 23 is used for sending a power-on signal to the video processor 2 to start the video processor 2.
The encoding and decoding circuit board 21 in the video processor 2 is used as a physical carrier of the video processor 2 and is used for bearing, installing and connecting all circuits and electronic components; when the video processor 2 implements the codec processing, the codec IC2101 is used to perform hardware codec on the received video data, specifically, the microprocessor 2102 and the off-chip memory 2103 that are loaded execute the video stream codec program and the control program that are embedded in the off-chip memory 2104 and the on-chip memory 2105, and control the codec IC2101 to perform hardware codec. The following describes the functions implemented by all the circuits and electronic components carried by the codec circuit board 21:
1. the codec IC2101 contains a video stream acquisition circuit, an IP core, a DSP digital circuit, a digital/analog converter, off-chip component control pins, and N I/O pins. The codec IC2101 realizes a function of hardware codec using the codec IC2101 as a core by an IP core of a highly integrated SOC (System on Chip) System through video stream acquisition, digital signal processing, digital-to-analog/analog-to-digital conversion, off-Chip component control, and I/O input and output by cooperation of a video stream codec program embedded in the on-Chip memory 2105 and the IP core.
The embodiment of the present invention may adopt an h.264 video codec standard for encoding and decoding, and specifically, the IP core includes: chroma sampling circuit, bright color signal separation circuit, macro block dividing circuit, motion compensation circuit, intra-frame prediction circuit, inter-frame prediction circuit, transform coding/decoding circuit, quantization coding/decoding circuit, entropy coding/decoding circuit. Based on these circuit units, encoding is performed as follows:
the chroma sampling circuit is used for carrying out chroma sampling on the real-time video stream data signal;
the bright color signal separation circuit is used for converting the chrominance signals sampled by the chrominance sampling circuit into a YCbCr color space according to the characteristic that the sensitivity of human eyes to brightness is greatly superior to the sensitivity to chrominance, and the sampling format is as follows: 4: 2, reducing part of chroma signal redundancy, reducing video signal volume and keeping video quality at high prime level;
the macro block dividing circuit is used for performing the following steps on a real-time video stream image: 16 × 16 macroblock partitions to encode separately for different macroblocks;
the intra-frame prediction circuit is used for reducing the spatial redundancy of the image content in the spatial domain sampling and realizing the reduction of the data volume of the original video;
the inter-frame prediction circuit is used for reducing time redundancy among image frames for time domain sampling and realizing reduction of data volume of an original video;
the motion compensation circuit is used for predicting the current frame by using the coded frame as follows: subtracting the residual error of the reference frame from the current frame, and coding a lower code stream;
the transformation coding and decoding circuit is used for carrying out the following steps on a real-time video stream data signal of a YCbCr color space: DCT discrete cosine transform, make the image signal concentrate on the low frequency part after the discrete cosine transform by its energy concentration characteristic; output coefficients are formed using a block transform to reduce statistical correlation in the spatial domain.
The quantization coding and decoding circuit is used for quantizing the transformed output coefficient to form a quantization coefficient;
the entropy coding and decoding circuit is used for performing the following on the quantized coefficients: entropy coding of huffman coding.
In addition, when the IP core performs decoding, the process completely opposite to the encoding operation is executed by using each circuit unit.
2. The microprocessor 2102 is a microcomputer for calling the codec command control codec IC2101 stored in the on-chip memory 2105 to perform hardware codec by executing the control command of the hardware codec stored in the off-chip memory 2104. Specifically, the microprocessor 2102 implements the codec function of the video processor 2 by executing the codec program embedded in the on-chip memory 2105 and the control program embedded in the off-chip memory 2104 with the cooperation of the off-chip memory 2103.
3. Off-chip memory 2103 is used to provide memory and cache for video processor 2. The off-chip memory 2103 is used to assist the microprocessor 2102 in executing the codec program stored in the on-chip memory 2105 to implement the codec function of the video processor 2.
4. The off-chip memory 2104 is used for storing control instructions of hardware codec, that is, the video stream codec control program is stored in an embedded manner. The microprocessor 2102 can control the related functions of image decoding and video encoding realized by the codec IC2101 by executing the control program, provide a method for embedding system software in an off-chip expansion memory for the codec IC2101, and realize image decoding and video encoding of a video stream by taking the codec IC2101 as a core in a highly integrated SOC system.
5. The on-chip memory 2105 is used for storing encoding and decoding instructions, i.e., program pointers of all actions, beats and flows of the video stream encoding and decoding process are embedded inside, providing program instructions for the video stream encoding and decoding process of the encoding and decoding IC2101 to realize the whole process of video recording and image monitoring, and providing a core program of a highly integrated SOC system for the encoding and decoding IC 2101. The microprocessor 2102 can cause the codec IC2101 to perform a hardware codec function by executing the codec program.
6. The video processor 2 is supplied with an alternating current of a stable frequency by an oscillation circuit 2106.
7. The network chip 2107 is used to provide the video processor 2 with a network connection driving circuit connected to the video stream input port 2110 to enable the video stream provided by the video source device 3 to be input to the video processor 2 through the front-end network device 4.
8. The power port and the switch circuit 2108 are used for providing direct current power supply for the video processor 2 and realizing on-off control.
9. Various off-chip RC circuits 2109 are provided for the codec IC 2101.
10. The video stream output from the video source device 3 is input to the video processor 2 through the front end network device 4 by using the video stream input port 2110, so that the video processor 2 performs video stream encoding and decoding to realize image decoding and video encoding functions.
11. The video output port 2111 is connected to the display device 6 via a video line, so that the video data decoded by the video processor 2 can be output to the display device 6 via the video output port 2111 for image display.
12. The video storage port 2112 is connected to the back-end network device 5 through a data line, so that the video data encoded by the video processor 2 can be transmitted to the hard disk of the monitoring computer 1, and the storage of the video file generated by the video data encoded by the video processor 2 is realized.
13. The remote control receiver 2113 is used to receive the control signal command sent by the remote controller 23, and the control signal command is transmitted to the microprocessor 2102 to execute the control signal command, so that the microprocessor 2102 can realize the image decoding and video encoding functions.
According to the video monitoring system provided by the embodiment of the invention, the video coding data output by a video source device is decoded one by one through a video processor, so that the problem of resource waste in the prior art is avoided; in addition, only the video processor, the video source equipment and the display equipment need to be added in a set, and the monitoring computer is adopted to carry out centralized control on all the video processors, so that the capacity expansion and the control of the monitoring system are facilitated.
Referring to fig. 9, a schematic flow chart of a video monitoring method according to an embodiment of the present invention is shown, where the method is applied to a video monitoring system, and the system includes: n video source devices, N video processors, N display devices and a monitoring computer; the N video processors are respectively in one-to-one communication with N video source devices and N display devices, N is more than or equal to 1, and N is an integer; the method comprises the following steps:
step 901: the video source equipment shoots pictures of a monitored target scene and encodes the shot pictures to form video stream data;
step 902: the video processor responds to the video monitoring operation triggered by the user through the monitoring computer, decodes the video stream data and forms video monitoring data;
step 903: and the display equipment displays the monitoring image according to the video monitoring data.
In some embodiments, the method further comprises:
the video processor responds to a video recording operation triggered by a user through the monitoring computer, and encodes the video monitoring data to form video recording data;
and the monitoring computer stores the video recording data to form a video recording file.
In some embodiments, the method further comprises:
the video processor responds to a video file playback operation triggered by a user through the monitoring computer, and decodes the video file sent by the monitoring computer;
the display equipment displays the video image according to the decoded video file;
alternatively, the first and second electrodes may be,
the video processor responds to the video file playing operation triggered by the user through the monitoring computer, and decodes the video file sent by the monitoring computer;
and the display equipment displays the video image according to the decoded video file.
In some embodiments, the video processor comprises: a codec integrated circuit IC; the video processor performs coding and decoding according to the following modes:
and the video processor performs hardware coding and decoding on the received video data by utilizing the coding and decoding IC.
In some embodiments, the video processor further comprises: the on-chip memory is used for storing coding and decoding instructions, the off-chip memory is used for storing control instructions of hardware coding and decoding, and the microprocessor is used for processing the control instructions; the video processor performs hardware encoding and decoding on the received video data by using the encoding and decoding IC, and comprises the following steps:
and the microprocessor calls the coding and decoding instructions stored in the on-chip memory to control the coding and decoding IC to carry out hardware coding and decoding by executing the control instructions.
In some embodiments, the monitoring computer comprises: a computer processor and a display for displaying a human-computer interaction interface; the method further comprises the following steps:
and the computer processor receives an operation instruction triggered by a user on the man-machine interaction interface and controls the video processor to carry out coding and decoding operations according to the operation instruction.
In some embodiments, the method further comprises:
and the display displays a monitoring image according to the video monitoring data.
It should be noted that, for the method disclosed in the embodiment, since it corresponds to the system disclosed in the embodiment, the description is relatively simple, and for the relevant points, refer to the description of the system part. It should also be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A video surveillance system, the system comprising: n video source devices, N video processors, N display devices and a monitoring computer; wherein, N video processor communicates with N video source equipment and N display device one-to-one respectively, and N >1 and N are the integer, video processor includes: the encoding and decoding integrated circuit IC comprises a video stream acquisition circuit, an IP core, a DSP digital circuit, a digital/analog converter, an off-chip component control pin and N I/O pins;
the video processor is used for carrying out hardware coding and decoding on the received video data by utilizing the coding and decoding IC;
the video source equipment is used for shooting pictures of a monitored target scene and coding the shot pictures to form video stream data;
the video processor is used for responding to the video monitoring operation triggered by the user through the monitoring computer, decoding the video stream data and forming video monitoring data;
the display device is used for displaying monitoring images according to the video monitoring data;
the video processor is also used for responding to the video recording operation triggered by the user through the monitoring computer, and encoding the video monitoring data to form video recording data;
the monitoring computer is used for storing the video recording data to form a video recording file;
the video processor is also used for responding to the video file playback operation triggered by the user through the monitoring computer and decoding the video file sent by the monitoring computer;
the display equipment is used for displaying the video image according to the decoded video file;
the video processor is also used for responding to the video file playing operation triggered by the user through the monitoring computer and decoding the video file sent by the monitoring computer;
the display device is used for displaying the video image according to the decoded video file;
the video processor further comprises:
the on-chip memory is used for storing coding and decoding instructions;
the off-chip memory is used for storing control instructions of hardware coding and decoding;
and the microprocessor is used for calling the coding and decoding instructions stored in the on-chip memory to control the coding and decoding IC to carry out hardware coding and decoding by executing the control instructions.
2. The system of claim 1, wherein said monitoring computer comprises: a computer processor and a display;
the display is used for displaying a human-computer interaction interface;
and the computer processor is used for receiving an operation instruction triggered by a user on the human-computer interaction interface and controlling the video processor to carry out coding and decoding operations according to the operation instruction.
3. The system of claim 2,
the display is also used for displaying monitoring images according to the video monitoring data.
4. A video surveillance method, applied to a video surveillance system, the system comprising: n video source devices, N video processors, N display devices and a monitoring computer; wherein, N video processor communicates with N video source equipment and N display device one-to-one respectively, and N >1 and N are the integer, video processor includes: the encoding and decoding integrated circuit IC comprises a video stream acquisition circuit, an IP core, a DSP digital circuit, a digital/analog converter, an off-chip component control pin and N I/O pins;
the video processor is used for carrying out hardware coding and decoding on the received video data by utilizing the coding and decoding IC; the method comprises the following steps:
the video source equipment shoots pictures of a monitored target scene and encodes the shot pictures to form video stream data;
the video processor responds to the video monitoring operation triggered by the user through the monitoring computer, decodes the video stream data and forms video monitoring data;
the display equipment displays a monitoring image according to the video monitoring data;
the method further comprises the following steps:
the video processor responds to a video recording operation triggered by a user through the monitoring computer, and encodes the video monitoring data to form video recording data;
the method further comprises the following steps:
the video processor responds to a video file playback operation triggered by a user through the monitoring computer, and decodes the video file sent by the monitoring computer;
the display equipment displays the video image according to the decoded video file;
the video processor responds to the video file playing operation triggered by the user through the monitoring computer, and decodes the video file sent by the monitoring computer;
the display equipment displays a video image according to the decoded video file;
the video processor further comprises: the on-chip memory is used for storing coding and decoding instructions, the off-chip memory is used for storing control instructions of hardware coding and decoding, and the microprocessor is used for processing the control instructions; the video processor performs hardware encoding and decoding on the received video data by using the encoding and decoding IC, and comprises the following steps:
and the microprocessor calls the coding and decoding instructions stored in the on-chip memory to control the coding and decoding IC to carry out hardware coding and decoding by executing the control instructions.
5. The method of claim 4, wherein said monitoring computer comprises: a computer processor and a display for displaying a human-computer interaction interface; the method further comprises the following steps:
and the computer processor receives an operation instruction triggered by a user on the man-machine interaction interface and controls the video processor to carry out coding and decoding operations according to the operation instruction.
6. The method of claim 5, further comprising:
and the display displays a monitoring image according to the video monitoring data.
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| CN107749994A (en) * | 2017-09-26 | 2018-03-02 | 中国科学院电子学研究所 | Deep space Coherent Noise in GPR Record compression method based on inter prediction |
| CN114245070B (en) * | 2021-11-30 | 2022-08-19 | 慧之安信息技术股份有限公司 | Method and system for centralized viewing of regional monitoring content |
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