CN101365112A - Embedded video monitoring and digital recording network based on visual information detection - Google Patents

Abstract

The invention relates to an embedded video monitoring and digital video network based on visual information detection. The control flow is as follows: (1) collecting an on-site image to be transferred to a monitoring centre; (2) analyzing two images by a frame differential method before and after being collected; if the on-site image changes, transferring the current image, otherwise, collecting the on-site images repeatedly and continuing the step 2; (3) managing abnormal images by a network video server SPFW to be saved to a hard disk memorizer YPCZ. The invention adopts a B/S system structure (a browser/a server structure). Aiming at the application of the video monitoring and supervision, and on the basis of ensuring validity and reliability of the data saving of the monitoring images, the invention not only greatly reduces the memory space, but also saves the network transmission bandwidth and reduces the burden on the network transmission.

Description

Embedded video monitoring and digital recording network based on the visual information detection

Technical field

What the present invention relates to is a kind of embedded supervision and digital recording network that extracts visual signature information from vedio data stream, it can realize the compression storage of networking collection, anomalous event detection and Identification and the vedio data stream of multiple spot, multichannel (road) video image, it is supported a plurality of video cameras to insert and supports PTZ (pan swing to video camera, tilt tilts, the zoom convergent-divergent) control.Belong to video monitoring and digital video recording technology field.

Background technology

In digital video monitoring to occasions such as unattended important engineering equipment of keeping, important public place, traffic intersections, all camera acquisitions to video image transfer digital signal to, after Network Transmission, need be stored on the hard disk of the special-purpose video monitoring server of monitoring, with reliability and the fail safe of guaranteeing that image document is preserved.The image preserving type of video server also needs long-term or regularly regularly preserves, which kind of preserving type no matter, and the hard disk memory headroom that is occupied is sizable.

Suppose on-the-spot video server setting round-the-clock video recording in 24 hours.25 frame/second of frame per second (Phase Alternation Line system) is preserved in design, image resolution ratio 352 * 288, and 1 day 24 hours preservation capacity of 1 video camera are 160～180M.As retention cycle 3 months, there were 6 video cameras at 1 monitoring scene, needs memory capacity to be: 180M * 90 day * 6 video camera=97.2G.If there are 4 video cameras at 1 monitoring scene, need memory capacity to be: 180M * 90 day * 4 video camera=64.8G.If the video server of monitoring central station is preserved 2 view data that monitoring is on-the-spot, hard disk preservation capacity needs to add up to: 97.2G+64.8G=162.0G.As seen it is sizable taking the hard disk memory headroom.In addition, the on-the-spot expense that has also increased CPU to the so many data volume of monitoring central station transmission greatly of monitoring.

Video monitoring in practice, the appearance of anomalous event is not all to take place constantly.If the image preserving type is decided by that the interested anomalous event of observer institute just starts the video server video recording when taking place and preserves, then will significantly reduce memory capacity, reach the purpose of compressed drive memory space.

Summary of the invention

Technical problem: the purpose of this invention is to provide a kind of embedded video monitoring and digital recording network that detects based on visual information, it can realize the compression storage of networking collection, anomalous event detection and Identification and the vedio data stream of multiple spot, multichannel (road) video image, it is supported a plurality of video cameras to insert and supports PTZ (pan swing to video camera, tilt tilts, the zoom convergent-divergent) control.

Technical scheme: camera acquisition to video image transfer digital signal to after, and adopt multiple spot, multichannel (road) vedio data stream to compress memory technology based on the anomalous event feature identification, realize the remote transmission processing based on the internet of ICP/IP protocol then, pass through Network Transmission to video monitoring server, and be stored on the video monitoring server.Guaranteeing not only to have significantly reduced memory space on the effective and reliable basis that the monitoring image data is preserved, and saving the Network Transmission bandwidth, alleviating the burden of Network Transmission.

Embedded video monitoring that detects based on visual information of the present invention and digital recording network comprise that front end supports router, Surveillance center's switch, supervisory control comuter, network video server and the harddisk memory of the integrated network video camera of four road videos input, field exchange machine, on-the-spot router, Surveillance center; Wherein, the corresponding respectively input interface that connects the field exchange machine of the output interface of integrated network video camera, router, Surveillance center's switch of field exchange machine, on-the-spot router, Surveillance center are connected in series, the 9th output interface of Surveillance center's switch connects the tenth input interface of supervisory control comuter, the 11 output interface of Surveillance center's switch connects the 12 input interface of network video server, and the 13 output interface of network video server connects the 14 output interface of harddisk memory; From vedio data stream, extract visual signature information.

The method of extracting visual signature information from vedio data stream is: when monitoring image occurs when unusual, adopt the background subtraction algorithm, carry out anomalous event and detect, its flow process is as follows: obtaining of a. background model, the distribution of background image pixel value is described with mixed Gauss model; B. the background image of current each two field picture with storage in advance subtracted each other, calculate and the background deviation value; C. the set that surpasses threshold value T deviation value is as the moving region, and its result can obtain position, size, the shape information of target travel, and judges the generation of anomalous event with this; C. according to the image that newly obtains, adopted Karmann filtering that the background image parameter is upgraded automatically.

Integrated network video camera SXJ mainly is made up of ccd video camera, front end monitoring station embedded video service unit SPI and PTZ control device etc., " front end monitoring station embedded video service unit " SPI that described integrated network video camera is had comprises the first port J1, the second port J2, the 3rd port J3, the 4th port J4 that analog video signal inserts; The first video coding chip U1, the second video coding chip U2, the 3rd video coding chip U3, the 4th video coding chip U4; First connects inductance L 1, second connects inductance L 2, the 3rd connection inductance L 3, the 4th connection inductance L 4; First connects resistance R 1, second connects resistance R 2, the 3rd connection resistance R 3, the 4th connection resistance R 4; The first connection capacitor C 1, the second connection capacitor C 2, the 3rd connection capacitor C 3, the 4th connection capacitor C 4, the 5th connection capacitor C 5, the 6th connection capacitor C 6, the 7th connection capacitor C 7, the 8th connection capacitor C 8, the 9th connection capacitor C 9, the tenth connection capacitor C the 10, the 11 connection capacitor C the 11, the 12 connection capacitor C 12; Analog video signal is through the first port J1, the second port J2, the 3rd port J3, the 4th port J4 and first connects inductance L 1, second connects inductance L 2, the 3rd connects inductance L 3, the 4th connects inductance L 4, the first connects resistance R 1, second connects resistance R 2, the 3rd connects resistance R 3, the 4th connects resistance R 4 is connected capacitor C 9 with the 9th, the tenth connects capacitor C 10, the 11 connects capacitor C 11, the 12 connects capacitor C 12 inserts the first video coding chip U1 respectively, the second video coding core U2, the 3rd video coding core U3, the A124 pin of the 4th video coding core U4; SCL pin, SDA pin and the RESET pin of the described first video coding chip U1, the second video coding core U2, the 3rd video coding core U3, the 4th video coding core U4 connect together respectively, insert three the I/O input and output pin of FPGA (U16) among Fig. 3; The XPD0-XPD7 data wire of the first video coding chip U1, the second video coding core U2, the 3rd video coding core U3, the 4th video coding core U4 directly directly links to each other with the first video frame memory U5, the second video frame memory U6 of Fig. 3, the data wire of the 3rd video frame memory U7, the 4th video frame memory U8 respectively, and the network communication interface circuit of the embedded video service unit SPI that affiliated front end is built-in mainly comprises ethernet communication chip IC 2 (model: RTL8019AS), signal isolator IC1 (model: HR901170A) with some Resistor-Capacitor Units.The data wire DA0-DA15 of described ethernet communication chip IC 2 directly links to each other with CPU, and insert 100 ohm pull-up resistor respectively, the address wire line A1-A5 of described ethernet communication chip IC 2, reading signal lines nOE links to each other with the I/O pin of FPGA respectively with write signal line nWE.

The PTZ control device that described integrated network video camera is had, support is to PTZ (the pan swing of video camera, tilt tilts, the zoom convergent-divergent) control, the PTZ control device comprises CPU U1, the first controllor for step-by-step motor U2, the second controllor for step-by-step motor U5, the first power driving circuit U3, the second power driving circuit U6, level shifting circuit U4, the first photoelectric isolating circuit OC1, the second photoelectric isolating circuit OC2, the 3rd photoelectric isolating circuit OC3, the 4th photoelectric isolating circuit OC4, the 5th photoelectric isolating circuit OC5, the 6th photoelectric isolating circuit OC6 and voltage stabilizing didoe, components and parts such as capacitance-resistance, 21 pin to 26 pin of described CPU U1 are respectively through the corresponding input pin that connects the first photoelectric isolating circuit OC1 to the, four photoelectric isolating circuit OC4 of coupling resistance, 11 pin of described CPU U1 link to each other with 10 pin of level shifting circuit U4,10 pin of CPU U1 link to each other with 9 pin of level shifting circuit U4, be used for the conversion of Transistor-Transistor Logic level to the RS232 level, 7 pin of level shifting circuit U4 are used for RS232 with 8 pin and communicate by letter, 4 pin of the described first controllor for step-by-step motor U2,6 pin, 7 pin, 9 pin, 5 pin, 8 pin respectively with 5 pin of the first power driving circuit U3,7 pin, 10 pin, 12 pin, 6 pin, 11 pin are corresponding directly to link to each other 4 pin of the second controllor for step-by-step motor U5,6 pin, 7 pin, 9 pin, 5 pin, 8 pin respectively with 5 pin of the second power driving circuit U6,7 pin, 10 pin, 12 pin, 6 pin, 11 pin are corresponding directly to link to each other.

Support integrated network video camera SXJn, field exchange machine A-SWITCH, the on-the-spot router-A-ROUT of four road videos inputs, the router B-ROUT switch b-SWITCH of Surveillance center, supervisory control comuter JKJ, network video server SPFW and the harddisk memory YPCZ of Surveillance center to form by front end; Adopt browser/server B/S system configuration, integrated network video camera SXJn supports PTZ control, directly insert field exchange machine A-SWITCH by Ethernet interface, the RJ45 interface of field exchange machine A-SWITCH directly links to each other by 5 class netting twines with the RJ45 interface of on-the-spot router-A-ROUT, the directly continuous wide area network access interface of a side at the scene of the Wide Area Network interface of on-the-spot router, the Wide Area Network interface of the router B-ROUT of described Surveillance center directly links to each other with the wide area network access interface of Surveillance center's one side, directly link to each other by Ethernet with 5 class lines between the router B-ROUT of Surveillance center and the switch b-SWITCH of Surveillance center, supervisory control comuter JKJ and network video server SPFW directly link to each other with 5 class lines by between RJ45 interface and the switch b-SWITCH of Surveillance center;

From vedio data stream, extract the embedded supervision and the digital recording network of visual signature information, the hard disk preserving type of its view data is that a. works as monitoring image and occurs when unusual, start the anomalous event trace routine and be provided with and monitor the hot-zone, b. the supervision hot-zone of current image frame is analyzed, judged that anomalous event takes place, and " hot-zone " image is added note timestamp label function automatically, starting hard disk preserves, c. when " hot-zone " disappears, behind the time of delay T, close the hard disk hold function.

Beneficial effect: camera acquisition to video image transfer digital signal to after, remote transmission is implemented in internet based on ICP/IP protocol, and adopt multiple spot, multichannel (road) vedio data stream to compress memory technology based on the anomalous event feature identification, be stored on the video monitoring server then.Guaranteeing not only to have significantly reduced memory space on the effective and reliable basis that the monitoring image data is preserved, and saving the Network Transmission bandwidth, alleviating the burden of Network Transmission.

Based on this, the present invention has designed networked multiple spot, multichannel (road) video image acquisition, anomalous event detection and Identification and video data compression memory device, it adopts video content analysis and mode identification technology, automation and intelligently detect the generation of anomalous event, and report to the police and trigger the image preserving type.

The present invention and present existing Related product have relatively not only greatly reduced the image storage space of hard disk, and have saved the Network Transmission bandwidth, alleviate the burden of Network Transmission.

Description of drawings

Fig. 1 is a functional-block diagram of the present invention;

Fig. 2 is that example block diagram is used in networking of the present invention;

Fig. 3 is the theory diagram of front end monitoring station embedded video service unit SPI;

Fig. 4 is the embodiment electrical schematic diagram of front end monitoring station embedded video service unit SPI;

Fig. 5 is the Ethernet interface embodiment electrical schematic diagram of front end monitoring station embedded video service unit SPI;

Fig. 6 is the circuit theory diagrams of PTZ control device;

Fig. 7 is the application software basic procedure key diagram of front end monitoring station embedded video service unit SPI.

Embodiment

As shown in Figure 1, the present invention supports the integrated network video camera SXJn of four road videos inputs (SXJ1～SXJ4), to support transmission network, supervisory control comuter JKJ, network video server SPFW, the harddisk memory YPCZ of ICP/IP protocol to form by front end.The present invention adopts B/S system configuration (browser/server structure), at the application of video monitor monitoring, adopts convenient, flexible WEB mode to monitor (B/S structure).This mode adopts the ICP/IP protocol of standard, can be applicable on local area network (LAN) and the wide area network, and gateway can be set arbitrarily, supports the inter-network section fully, and the monitoring remote video environment of router is arranged.

Described integrated network gamma camera SXJn is made up of ccd video camera, front end monitoring station embedded video service unit SPI and PTZ control device.The imaging size of the ccd video camera of design alternative adopts 1/3 ＂ HIGSONY CCD, and digital high definition can reach 470 lines, has Automatic white balance and manual adjustment, functions such as automatic gain control (AGC), BLC and autoelectrinic shutter.The ccd video camera of design alternative is highly sensitive, and minimum illuminance is 0.1Lux, and the S/N ratio is greater than 48dB, and power supply is 12VDC, and 3.5～8.0mm manual two is variable, auto iris, band CS interface.

Front end monitoring station embedded video service unit (is called for short front end embedded video service unit, SPI) effect is that the ccd video camera video analog signal is converted to digital signal and coding, compresses, pass through simultaneously certain protocol again in real time, with vision signal with the form of data flow in transmission over networks, receive after the client-access request after the network video server SPFW checking when front end embedded video service unit, send to the front end monitoring station with point-to-point form.

The image video signal of front end monitoring station (monitoring is on-the-spot) is converted into digital signal by the built-in embedded video service unit SPI of front end after the employing digital video compaction technique is encoded, and the network transmission protocol is an ICP/IP protocol.SPI adopts FPGA and DSP Embedded System Design, and switching, real-time network transmission, telefile playback and download, support stream protocol (RTP/RTCP, RTSP), support IE that the real-time H264 devices at full hardware with vision signal and audio signal is compressed (adopting H264 hardware-compressed technology), compressed bit stream recording disk, real-time video and sound preview, vision signal and audio signal synchronously browse, support functions such as double-directional speech intercommunication.Data volume more reduces about 30% than MPEG4 under the equal video quality.Support 4 tunnel vision signals, the separate hardware compression of the real-time per second 25 frame CIF resolution of every Lu Jieke.Support anomalous event to detect and video content " hot-zone " machine analytic function, and " hot-zone " image add the note label function automatically.

Embedded video service unit SPI the key technical indexes is, the input of 2/4 tunnel composite video signal, support PAL, TSC-system formula, resolution is 352 * 288/176 * 144 (PAL) 352 * 240/176 * 120 (NTSC), 25F/S, 30F/S frame per second, compression standard: H264, bit rate output: 70kbps-1000kbps.

The network function of embedded video service unit SPI: the ethernet port of supporting a 10M/100M compatibility; Support a RS-232C serial ports, can support dialling in and transfering to of MODEM; Support ICP/IP protocol, can parameter, displaying live view video and audio signal be set by application software or browser, check the video server state, can pass through network alarming, can be by network storage compressed bit stream; Can upgrade by network remote, realize remote maintenance; Possess WEB SERVER function, can be kept at by the data image signal at browser access scene in the hard disk of front end embedded video server, also can be by multi-functional video monitoring server collection, the preservation of central station.All all can the monitoring station of its administration be carried out video image through the computers of authorizing and monitor on local area network (LAN) by network.System supports that IE browses.

The PTZ control device comprises components and parts such as CPU U1, the first controllor for step-by-step motor U2, the second controllor for step-by-step motor U5, the first power driving circuit U3, the second power driving circuit U6, level shifting circuit U4, the first photoelectric isolating circuit OC1, the second photoelectric isolating circuit OC2, the 3rd photoelectric isolating circuit OC3, the 4th photoelectric isolating circuit OC4, the 5th photoelectric isolating circuit OC5, the 6th photoelectric isolating circuit OC6 and voltage stabilizing didoe, capacitance-resistance, support is to PTZ (the pan swing of ccd video camera, tilt tilts, the zoom convergent-divergent) control.

As shown in Figure 2, networking plan block diagram of the present invention, (SXJ1～SXJ4), field exchange machine A-SWITCH and the switch b-SWITCH of Surveillance center, on-the-spot router-A-ROUT and center router B-ROUT, supervisory control comuter JKJ, network video server SPFW, harddisk memory YPCZ form by front end integrated network gamma camera SXJn.

The described integrated network gamma camera SXJn (network port (Port1 of SXJ1～SXJ4), Port3, Port5, Port7) respectively with the port (Port2 of field exchange machine A-SWITCH, Port4, Port6, Port8) directly link to each other, the port (Port15) of field exchange machine A-SWITCH directly links to each other with the port (Port16) of on-the-spot router, the port (Port17) of on-the-spot router is by the wide area network access port access of a side at the scene, finish the route distribution and the remote transmission of on-site supervision point video stream, the router B-ROUT port (Port18) of Surveillance center inserts by the wide area network access port in Surveillance center's one side, finish telemonitoring and the telemanagement of Surveillance center to the scene, the router B-ROUT port (Port19) of Surveillance center is connected with the port (Port20) of the switch b-SWITCH of Surveillance center, the port (Port10) of supervisory control comuter (JKJ) directly links to each other with the port (Port9) of the switch b-SWITCH of Surveillance center, the port (Port9) of ethernet port (Port12) switch b-SWITCH of Surveillance center of video server (SPFW) directly links to each other, the ethernet port (Port12) of video server Ethernet (SPFW) directly links to each other with the port (Port11) of the switch b-SWITCH of Surveillance center, and the I D E port (Port13) of video server (SPFW) directly links to each other with the ide interface (Port14) of harddisk memory.

The gigabit ethernet switch that described switch A-SWITCH and B-SWITCH switch adopt D-Link company to produce, model is D-Link DGS-1024T.Exchanged form is a storage-pass-through mode, and 48Gbps Gbps, mac address table are 8K, and transmission rate is 10Mbps/100Mbps/1000Mbps.Network enabled standard IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3x.24 of port numbers, interface medium are 10Base-T:UTP Cat.3,4,5 (maximum 100 meters), EIA/TIA-586100-ohm STP (maximum 100 meters), 100Base-TX, 1000Base-T:UTP Cat.5,5e (maximum 100 meters), EIA/TIA-586100-ohm STP (maximum 100 meters).Transmission mode, the full-duplex/half-duplex self adaptation, power supply is 100-240VAC, 50/60Hz.

The D-LinkDI-1750 modular router that described router-A-ROUT and router B-ROUT select D-Link company to produce.The DI-1750 router has 2 expansion slots.Rich interface, flexible, configuring maintenance is simple, and message processing capability is strong.D-Link DI-1750 basic configuration sees Table 1.The software performance index of D-Link DI-1750 sees Table 2.

The basic configuration of table 1 D-Link DI-1750

Table 2 D-Link DI-1750 software performance index

D-Link DI-1750 modular router meets international standard, has good interconnectivity; Support various communications and procotol to have good fail safe and reliability; Abundant diagnosis and the perfect debugging application power of managerial ability; The good ratio of performance to price; Support the software upgrading and the configuration of Chinese and English flexible interface to preserve; Support many Ethernet interfaces; Abundant interface type: Fast Ethernet mouth, asynchronous serial port, with/asynchronous self-adapting serial port, ISDN BRI, ISDN PRI, channelized e1 and nonchannelized E1 etc.; Powerful port expansion capacity, port arrangement flexibly; Wide area network and voice interface card can be installed, can with existing telephone set, key system, and stored-program control exchange (PBX) cooperating, thereby permission is transferring voice and facsimile signal minimizing long distance communication expense virtual support dedicated network (VPN) on the digital network circuit, and encryption, tunnel and service quality (QoS) are provided.Allow to use the WIC/VIC card, reduce the expense of maintenance and repair parts and have the expansion slot that support hardware is encrypted.

Described supervisory control comuter JKJ selects DELLDell DimensionTM desktop computer for use.Support Front Side Bus intel pentium 4 processors of the 800MHz of Hyper-Threading, the integrated Pro of Intel 10/100 network interface card, USB 2.0 technology (8 ports, 2 preposition ports wherein, 6 rearmounted ports), the 512MB internal memory, 80GBIDE (7200RPM) hard disk, 16X Max DVD-ROM Drive, 17 ＂ (16.0 ＂ v.i.s) CRT main flow display, 64MB DDR nVidia (R) GeForce4 (TM) MX graphics acceleration card, band TV-Out interface, stereo speaker Altec Lansing (R) ADA215.Systems soft ware is installed the WindowsXP of Microsoft.

Described network video server SPFW adopts DELL PowerEdge 840, and its configuration is as follows: processor adopting Intel Xeon 3050, dominant frequency 2130MHz, internal memory 1024MB, maximum memory 8G, network interface card: built-in gigabit ethernet card, 4X DVD burner, USB 2.0 technology, 19 ＂ CRT main flow displays, 64MB DDRnVidia (R), GeForce4 (TM) MX graphics acceleration card, band TV-Out interface, Altec Lansing (R) ADA215 stereo speaker.

Described network video server SPFW is responsible for the management and the control of video monitor website (monitor camera) in institute's compass of competency.Functions such as user management, rights management, video flowing scheduling, apparatus bound, front end video service device SPI management, relay proxy management realize by multi-functional video server.WEB is provided service simultaneously, and all system's settings are as long as just can carry out after the identity login WEB page password authentification with the keeper.Equally, client will watch the control point of front end video service device SPI management to need not to obtain IP address or other data at this station, as long as login the WEB page with regard to addressable arbitrary monitor camera (control point) through authorizing.

Network video server SPFW operating system is Windows 2000 Sever.The application software of network video server SPFW mainly comprises, video server hypervisor, monitoring end points passage service interface program, anomalous event detection and startup hard disk save routine etc.

(1) video server hypervisor

Video server in the system is effectively managed; Camera lens is divided into groups flexibly; To user's group, user and authority thereof are carried out strict control; To system journal, the management of input/output signal; Management to video recording and warning.

(2) monitoring end points passage service interface program

Cooperate different hardware devices, handle the input of video stream signal; The may command camera lens, video switch; System can the receiver, video Service-Port or the switching value signal of network port input, is processed into standard switch amount signal ID, and triggers different incidents according to different signal ID, operates the corresponding switching value action of output according to the user; Regularly system equipment is connected test.

(3) anomalous event detects and starts the hard disk save routine

The image hard disk preserving type of network video server is decided by that the interested anomalous event of observer institute just starts video recording when taking place and preserves, with the compressed drive memory space.In the video monitoring practical application, when video content analyzes in the monitoring image when " hot-zone " arranged through the anomalous event trace routine, judge that then anomalous event takes place, and " hot-zone " image added note timestamp label function automatically, starting hard disk preserves, when " hot-zone " disappears, behind T time of delay (can be provided with 1/24/48 hour), close the hard disk hold function.

Anomalous event detects and adopts the background subtraction algorithm, its basic thought is that the background image of current each two field picture with storage in advance subtracted each other, calculate with background depart from surpass certain threshold value T the zone as the moving region, subtract each other the result and directly provide the information such as position, size, shape of target travel, and judge the generation of anomalous event with this.The key that the background subtraction method realizes is obtaining of background model and upgrades.Background modeling method is described the distribution of background image pixel value with mixed Gauss model, judges in the target detection process whether the current pixel value of image meets this distribution, judges foreground point or background dot.Simultaneously according to newly obtain image, the background image parameter is upgraded automatically.Adopted Karmann filtering in the renewal process, made that background can adapt to that extraneous light changes in the scene, the moving of the disturbance of object and fixed object, shade influence etc. in the background.

Described harddisk memory YPCZ adopts the configuration of two 120GB IDE (7200RPM) hard disk.

As shown in Figure 3, described front end monitoring station embedded video service unit SPI mainly comprises and looks first, second, third, fourth frequently encoder U1, U2, U3, U4 module; First, second, third, fourth video frame memory U5, U6, U7, U8 module; CPU U9; RS232 communication module U10; Data storage U11; Program storage U12; Ethernet communication module U13; Rj45 communication interface U14; Field programmable gate array (FPGA) U16; Compositions such as program download interface U15.

Described first, second, third, fourth video encoder U1, U2, U3, U4 module, the video encoder of selecting for use PHILIPS Co. to produce, its model is respectively SAA7114, mainly finishes the conversion of analog video to digital video, and the preliminary preliminary treatment of video formats conversion and video; Described first, second, third, fourth video frame memory U5, U6, U7, U8 module, the SDRAM that selects for use Modern Corporation (HY) to produce, its model is HY57V643220C, memory space is 32M, at the scene the digital video information after the down temporary first, second, third, fourth video encoder U1 of the specific time sequence of programmable gate array (FPGA) U16 control, U2, U3, the U4 module converts; The DSP that the professional video that CPU U9 selects for use the unit TI company to produce is handled, its model is DM642, is the core component of system; Described field programmable gate array (FPGA) U16, its capacity is 120,000, model is EP1C6Q240C8, is used for the generation of required clock signal of whole system and logical signal; Described ethernet communication module U13, its model is RTL8019AS, is used for network service.

As shown in Figure 4, the video front processing hardware circuit principle of described front end monitoring station embedded video service unit SPI comprises the access first port J1, the second port J2, the 3rd port J3, the 4th port J4 of analog video signal; The first video coding chip U1, the second video coding chip U2, the 3rd video coding chip U3, the 4th video coding chip U4; First, second, third, fourth connects inductance L 1, L2, L3, L4; First, second, third, fourth connects resistance R 1, R2, R3, R4; First, second is to the 12 connection capacitor C 1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12.Analog video signal is respectively through the first port J1, the second port J2, the 3rd port J3, the 4th port J4 and first connects inductance L 1, second connects inductance L 2, the 3rd connects inductance L 3, the 4th connects inductance L 4, the first connects resistance R 1, second connects resistance R 2, the 3rd connects resistance R 3, the 4th connects resistance R 4 is connected capacitor C 9 with the 9th, the tenth connects capacitor C 10, the 11 connects capacitor C 11, the 12 connects capacitor C 12 inserts the first video coding chip U1 respectively, the second video coding chip U2, the 3rd video coding chip U3, the A124 pin of the 4th video coding chip U4.

As shown in Figure 4, SCL pin, SDA pin and the RESET pin of the described first video coding chip U1, the second video coding chip U2, the 3rd video coding chip U3, the 4th video coding chip U4 connect together respectively, insert three the I/O input and output pin of FPGA (U16) among Fig. 3; The XPD0-XPD7 data wire of the first video coding chip U1, the second video coding chip U2, the 3rd video coding chip U3, the 4th video coding chip U4 respectively directly with the first video frame memory U5, the second video frame memory U6 of Fig. 3, look the 3rd the data wire of frame memory U7, the 4th video frame memory U8 be corresponding frequently and directly link to each other.

As shown in Figure 5, the schematic diagram of the network communication interface circuit of front end monitoring station embedded video service unit SPI mainly comprises ethernet communication chip IC 2 (model: RTL8019AS), signal isolator IC1 (model: HR901170A) and some Resistor-Capacitor Units.The data wire DA0-DA15 of described ethernet communication chip IC 2 directly links to each other with CPU, and insert 100 ohm pull-up resistor respectively, the address wire line A1-A5 of described ethernet communication chip IC 2, reading signal lines nOE links to each other with the I/O pin of FPGA respectively with write signal line nWE.

As shown in Figure 6 be PTZ control device circuit theory diagrams, mainly by CPU U1 (model: AT89C51), the first controllor for step-by-step motor U2 (model: L297), the first power driving circuit U3 (model: L298), level shifting circuit U4, the second controllor for step-by-step motor U5 (model: L297), the second power driving circuit U6 (model: L298), the first photoelectric isolating circuit OC1, the second photoelectric isolating circuit OC2, the 3rd photoelectric isolating circuit OC3, the 4th photoelectric isolating circuit OC4, the 5th photoelectric isolating circuit OC5, the 6th photoelectric isolating circuit OC6, and compositions such as some necessary resistance and capacity cell.

As shown in Figure 6,21 pin of the CPU U1 of described PTZ control device directly are connected with input 1 pin of the first photoelectric isolating circuit OC1 by the second coupling resistance R2; 22 pin of CPU U1 directly are connected with input 1 pin of the second photoelectric isolating circuit OC2 by the 3rd coupling resistance R3; 23 pin of CPU U1 directly are connected with input 1 pin of the 3rd photoelectric isolating circuit OC3 by the 4th coupling resistance R4; 24 pin of CPU U1 directly are connected with input 1 pin of the 4th photoelectric isolating circuit OC4 by the 16 coupling resistance R16; 25 pin of CPU U1 directly are connected with input 1 pin of the 5th photoelectric isolating circuit OC5 by the 17 coupling resistance R17; 26 pin of CPU U1 directly are connected with input 1 pin of the 6th photoelectric isolating circuit OC6 by the 18 coupling resistance R18; 11 pin of described CPU U1 link to each other with 10 pin of level shifting circuit U4, and 10 pin of CPU U1 link to each other with 9 pin of level shifting circuit U4, are used for the conversion of Transistor-Transistor Logic level to the RS232 level; 7 pin of level shifting circuit U4 and 8 pin directly link to each other with RS232 communication module U10 among Fig. 3; 17 pin of the first controllor for step-by-step motor U2,18 pin, 10 pin directly link to each other with 3 pin of the first photoelectric isolating circuit OC1,3 pin of the second photoelectric isolating circuit OC2,3 pin of the 3rd photoelectric isolating circuit OC3 respectively; 17 pin of the second controllor for step-by-step motor U5,18 pin, 10 pin directly link to each other with 3 pin of the 4th photoelectric isolating circuit OC4,3 pin of the 5th photoelectric isolating circuit OC5,3 pin of the 6th photoelectric isolating circuit OC6 respectively; 4 pin of the first controllor for step-by-step motor U2,6 pin, 7 pin, 9 pin, 5 pin, 8 pin directly link to each other with 5 pin, 7 pin, 10 pin, 12 pin, 6 pin, 11 pin of the first power driving circuit U3 respectively, and 4 pin of the second controllor for step-by-step motor U5,6 pin, 7 pin, 9 pin, 5 pin, 8 pin directly link to each other with 5 pin, 7 pin, 10 pin, 12 pin, 6 pin, 11 pin of the second power driving circuit U6 respectively.

Claims (4)

1, a kind of embedded video monitoring and digital recording network that detects based on visual information is characterized in that this video monitor and digital recording network comprise that front end supports router (B-ROUT), Surveillance center's switch (B-SWITCH), supervisory control comuter (JKJ), network video server (SPFW) and the harddisk memory (YPCZ) of the integrated network video camera (SXJ1-4) of four road videos input, field exchange machine (A-SWITCH), on-the-spot router (A-ROUT), Surveillance center; Wherein, (Port 1 for the output interface of integrated network video camera (SXJ1-4), Port 3, Port 5, Port 7) respectively correspondence connect the input interface of field exchange machine (A-SWITCH) (Port 2, Port 4, Port 6, Port 8), field exchange machine (A-SWITCH), on-the-spot router (A-ROUT), the router of Surveillance center (B-ROUT), Surveillance center's switch (B-SWITCH) is connected in series, the 9th output interface of Surveillance center's switch (B-SWITCH) (Port 9) connects the tenth input interface (Port 10) of supervisory control comuter (JKJ), the 11 output interface (Port 11) of Surveillance center's switch (B-SWITCH) connects the 12 input interface (Port12) of network video server (SPFW), and the 13 output interface (Port 13) of network video server (SPFW) connects the 14 output interface (Port 14) of harddisk memory (YPCZ); From vedio data stream, extract visual signature information.

2, embedded video monitoring and the digital recording network that detects based on visual information according to claim 1, it is characterized in that the method for extracting visual signature information from vedio data stream is: when monitoring image occurs when unusual, adopt the background subtraction algorithm, carrying out anomalous event detects, its flow process is as follows: obtaining of a. background model, the distribution of background image pixel value is described with mixed Gauss model; B. the background image of current each two field picture with storage in advance subtracted each other, calculate and the background deviation value; C. the set that surpasses threshold value T deviation value is as the moving region, and its result can obtain position, size, the shape information of target travel, and judges the generation of anomalous event with this; C. according to the image that newly obtains, adopted Karmann filtering that the background image parameter is upgraded automatically.

3, embedded video monitoring and the digital recording network that detects based on visual information according to claim 1 is characterized in that described integrated network video camera SXJ comprises ccd video camera, front end monitoring station embedded video service unit SPI and PTZ control device; " front end monitoring station embedded video service unit " SPI that described integrated network video camera is had comprises first port (J1), second port (J2), the 3rd port (J3), the 4th port (J4) that analog video signal inserts; First video coding chip (U1), second video coding chip (U2), the 3rd video coding chip (U3), the 4th video coding chip (U4); First connects inductance (L1), second connects inductance (L2), the 3rd connection inductance (L3), the 4th connection inductance (L4); First connects resistance (R1), second connects resistance (R2), the 3rd connection resistance (R3), the 4th connection resistance (R4); The first connection electric capacity (C1), the second connection electric capacity (C2), the 3rd connection electric capacity () C3, the 4th connection electric capacity () C4, the 5th connection electric capacity (C5), the 6th connection electric capacity (C6), the 7th connection electric capacity (C7), the 8th connection electric capacity (C8), the 9th connection electric capacity (C9), the tenth connection electric capacity (C10), the 11 connection electric capacity (C11), the 12 connection electric capacity (C12); Analog video signal is through first port (J1), second port (J2), the 3rd port (J3), the 4th port (J4) and first connects inductance (L1), second connects inductance () L2, the 3rd connects inductance (L3), the 4th connects inductance (L4), and first connects resistance (R1), second connects resistance (R2), the 3rd connects resistance (R3), the 4th connects resistance (R4) is connected electric capacity (C9) with the 9th, the tenth connects electric capacity (C10), the 11 connects electric capacity (C11), the 12 connects electric capacity (C12) inserts first video coding chip (U1) respectively, the second video coding core (U2), the 3rd video coding core (U3), the A124 pin of the 4th video coding core (U4); SCL pin, SDA pin and the RESET pin of described first video coding chip (U1), the second video coding core (U2), the 3rd video coding core (U3), the 4th video coding core (U4) connect together respectively, insert three the I/O input and output pin of FPGA (U16) among Fig. 3; The XPD0-XPD7 data wire of first video coding chip (U1), the second video coding core (U2), the 3rd video coding core (U3), the 4th video coding core (U4) directly directly links to each other with the data wire of first video frame memory (U5) of Fig. 3, second video frame memory (U6), the 3rd video frame memory (U7), the 4th video frame memory (U8) respectively, and the network communication interface circuit of the embedded video service unit SPI that affiliated front end is built-in mainly comprises ethernet communication chip IC 2, signal isolator IC1 and some Resistor-Capacitor Units.The data wire DA0-DA15 of described ethernet communication chip IC 2 directly links to each other with CPU, and insert 100 ohm pull-up resistor respectively, the address wire line A1-A5 of described ethernet communication chip IC 2, reading signal lines nOE links to each other with the I/O pin of FPGA respectively with write signal line nWE.

4, embedded video monitoring and the digital recording network that detects based on visual information according to claim 3, it is characterized in that described PTZ control device, support is to the PTZ control of video camera, the PTZ control device comprises CPU (U1), first controllor for step-by-step motor (U2), second controllor for step-by-step motor (U5), first power driving circuit (U3), second power driving circuit (U6), level shifting circuit (U4), first photoelectric isolating circuit (OC1), second photoelectric isolating circuit (OC2), the 3rd photoelectric isolating circuit (OC3), the 4th photoelectric isolating circuit (OC4), the 5th photoelectric isolating circuit (OC5), the 6th photoelectric isolating circuit (OC6) and voltage stabilizing didoe, components and parts such as capacitance-resistance, 21 pin to 26 pin of described CPU (U1) are respectively through the corresponding input pin that connects first photoelectric isolating circuit (OC1) to the 4th photoelectric isolating circuit (OC4) of coupling resistance, 11 pin of described CPU (U1) link to each other with 10 pin of level shifting circuit (U4), 10 pin of CPU (U1) link to each other with 9 pin of level shifting circuit (U4), be used for the conversion of Transistor-Transistor Logic level to the RS232 level, 7 pin of level shifting circuit (U4) are used for RS232 with 8 pin and communicate by letter, 4 pin of described first controllor for step-by-step motor (U2), 6 pin, 7 pin, 9 pin, 5 pin, 8 pin respectively with 5 pin of first power driving circuit (U3), 7 pin, 10 pin, 12 pin, 6 pin, 11 pin are corresponding directly to link to each other 4 pin of second controllor for step-by-step motor (U5), 6 pin, 7 pin, 9 pin, 5 pin, 8 pin respectively with 5 pin of second power driving circuit (U6), 7 pin, 10 pin, 12 pin, 6 pin, 11 pin are corresponding directly to link to each other.

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