CN104092974A - Multi-channel video clip splicing system and method based on moving object identity - Google Patents
Multi-channel video clip splicing system and method based on moving object identity Download PDFInfo
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Abstract
A multi-channel video clip splicing system based on motion object identity comprises cameras, a video forwarding server and a video storing server. An RFID card reader is mounted beside each camera. A moving object is provided with an RFID tag. An RFID intermediary system processes tag information acquired by the RFID card readers and determines the identity of the moving object. Information about that a moving object reaches an RFID card reader is transmitted to an application server, and the application server matches the information to camera information corresponding to the RFID card reader through the camera and a deployed RFID mapping table, transmits a video forwarding request about the camera to the video forwarding server, receives a forwarded video packet, and splices the video packet to a unified video document corresponding to the moving object. The invention further provides a multi-channel video clip splicing method based on motion object identity. The workload of manual multi-channel video retrieval can be greatly reduced, and the real-time performance is good.
Description
Technical field
The present invention relates to field of video monitoring, especially a kind of multi-channel video montage splicing system and method thereof.
Background technology
Conventionally in video monitoring, same moving object through the track video recording distributed and saved of Multi-path monitoring camera at several independently in video documents.When user consults the movement locus of this monitoring object, must browse multi-channel video document or rely on some video editing softwares and these documents are carried out to montage be spliced to form one about the unified video documents through multi-path monitoring equipment of this moving object.Because being generally manually carries out distinguishing of moving object by naked eyes, consult multi-channel video or montage splicing and all can bring very large workload; And these work belong to afterwards and to process, the real-time online that cannot meet user is browsed the demand of monitoring object running orbit.
Summary of the invention
In order to overcome the deficiency that workload is large, real-time is poor of existing multi-channel video montage connecting method, the invention provides a kind of workload, good multi-channel video montage splicing system and method thereof based on moving object identify label of real-time of greatly reducing.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of multi-channel video montage splicing system based on moving object identify label, comprise for gathering the video camera of video, on each video camera side, road, install for reading the RFID card reader of RFID label, in described moving object, band is useful on the RFID label of indicate identification sign, and described multi-channel video montage splicing system also comprises:
Video forwarding server, for receiving and forward the video of camera acquisition;
Video storage server, for storing the video of camera acquisition
RFID intermediary system, the label information obtaining for the treatment of RFID card reader, and the identity of definite moving object; To application server, send the information that certain moving object arrives this road RFID card reader;
Application server, for the corresponding table of the RFID by video camera and deployment thereof, match video camera information corresponding to this road RFID, to video forwarding server, send the video Forward-reques about this road video camera, receive and forward the video package of coming, through video-splicing processing module, video packets is spliced in unified video documents corresponding to certain moving object;
In described video-splicing processing module, select a type of coding, specification as reference format, by any moment, the video code flow of experience is all unified to change to this form, thereby completes the splicing of video code flow.
Further, in described video-splicing processing module, package is carried out to deblocking, the code stream that solution is honored as a queen and is formed, calls the video codec engine interface of application server local disposition and decodes; Judge whether the form of source video meets the reference format of splicing, if, current frame image is called to the interface corresponding to baseline encoded type of video codec engine and encode, and newly-generated code stream is added in unified video documents corresponding to this moving object.
Further again, in described video-splicing processing module, if the resolution of source video and the resolution of reference format are inconsistent, decoded image is carried out to bilinearity convergent-divergent.
Further, in described video-splicing processing module, if the frame per second of source video flowing is overstocked, excessively thin, do not mate with the frame per second that reference format requires, select to abandon present frame or copy present frame, thereby reach the effect of taking out frame, interleave.
RFID intermediary system is safeguarded a state machine for each label of each road RFID card reader of turnover, when reading label information, generate state machine, when not reading label, cancel state machine, the acquiescence initial condition machine of state machine is not read label information, triggers montage splicing when moving object enters; Moving object is left and is finished montage splicing; The resident expression application server of moving object is just in the process of montage splicing video flowing.
Triggering or END instruction that described RFID intermediary system is sent to application server, RFID card reader is read respectively or is read less than label information when label turnover radiation scope, RFID intermediary system is safeguarded a state machine for each label, according to the state variation of state machine, judgement label turnover radiation scope.
A kind of multi-channel video montage joining method based on moving object identify label, multi-channel video montage splicing system comprises for gathering the video camera of video, on each video camera side, road, install for reading the RFID card reader of RFID label, in described moving object, band is useful on the RFID label of indicate identification sign, and described multi-channel video montage joining method comprises the steps:
1) label information that processing RF ID card reader obtains, and the identity of definite moving object; Send the information that certain moving object arrives this road RFID card reader, by the RFID correspondence of video camera and deployment thereof, show to match video camera information corresponding to this road RFID, send the video Forward-reques about this road video camera,
2) receive and forward the video package of coming, package is carried out to deblocking, and the code stream that solution is honored as a queen and is formed, calls the video codec engine interface of local disposition and decodes;
3) judge whether the form of source video meets the reference format of splicing, if, current frame image is called to the interface corresponding to baseline encoded type of video codec engine and encode, and newly-generated code stream is added in unified video documents corresponding to this moving object.
Further, described step 3) in, if the resolution of source video and the resolution of reference format are inconsistent, decoded image is carried out to bilinearity convergent-divergent.
Further again, described step 3) in, if the frame per second of source video flowing is overstocked, excessively thin, do not mate with the frame per second that reference format requires, select to abandon present frame or copy present frame, thereby reach the effect of taking out frame, interleave.
Further, each label for each road RFID card reader of turnover is safeguarded a state machine, when reading label information, generate state machine, when not reading label, cancel state machine, the acquiescence initial condition machine of state machine is not read label information, triggers montage splicing when moving object enters; Moving object is left and is finished montage splicing; The resident expression application server of moving object is just in the process of montage splicing video flowing.
Technical conceive of the present invention is: for moving object, have automatic identity recognition function.In multichannel camera, the image of same moving object can splice by real-time online, forms the unified video documents about this object.The identification of moving object is that the RFID subsystem based on being deployed in video monitoring system is realized, and wherein each mobile object carries RFID label, and each road camera is all furnished with RFID card reader.Mobile object can be people or thing.
Such video monitoring system both can have been used in the enterprise safety operations such as coal miner monitoring operation, field force's management, also can use in kindergarten, traditional video monitoring place such as home for destitute, prison.
Beneficial effect of the present invention is mainly manifested in: by directly browsing the movement locus video of certain specific mobile object, avoid multichannel manually to search identification, greatly reduced the workload that movement locus is searched, and improved user's experience that track is consulted; Real-time is good.
Accompanying drawing explanation
Fig. 1 is the network element structure chart of the multi-channel video montage splicing system based on moving object identify label.
Fig. 2 is the logic sequence figure that triggers montage splicing.
Fig. 3 is the logic sequence figure that stops montage splicing.
Fig. 4 is the schematic diagram that RFID intermediary system judges the state machine that mobile object enters, leaves.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
With reference to Fig. 1～Fig. 4, a kind of multi-channel video montage splicing system based on moving object identify label, comprise for gathering the video camera of video, on each video camera side, road, install for reading the RFID card reader of RFID label, in described moving object, band is useful on the RFID label of indicate identification sign, and described multi-channel video montage splicing system also comprises:
Video forwarding server, for receiving and forward the video of camera acquisition;
Video storage server, for storing the video of camera acquisition
RFID intermediary system, the label information obtaining for the treatment of RFID card reader, and the identity of definite moving object; To application server, send the information that certain moving object arrives this road RFID card reader;
Application server, for the corresponding table of the RFID by video camera and deployment thereof, match video camera information corresponding to this road RFID, to video forwarding server, send the video Forward-reques about this road video camera, receive and forward the video package of coming, through video-splicing processing module, video packets is spliced in unified video documents corresponding to certain moving object;
In described video-splicing processing module, select a type of coding, specification as reference format, by any moment, the video code flow of experience is all unified to change to this form, thereby completes the splicing of video code flow.
In the present embodiment, the splicing based on RFID locating information triggers, finishes mechanism: on each video camera side, road, RFID card reader is installed, the antenna polarization direction of card reader and the view direction of video camera are consistent.When the mobile object of tape label enters the aerial radiation scope of RFID card reader, RFID card reader is obtained the information of label, and RFID intermediary system is processed the label information that card reader obtains, and the identity of definite mobile object.RFID intermediary system sends to application server the information that certain mobile object arrives this road RFID card reader (Ye Jigai road camera apparatus), and application server matches video camera information corresponding to this road RFID by the corresponding table of RFID of video camera and deployment thereof.Application service sends the video Forward-reques about this road video camera to video forwarding server, and application server is received and forwarded the video package of coming, through video-splicing processing module, video packets is spliced in the unified video documents that certain mobile object is corresponding.
The network element structure chart of whole system, as Fig. 1, wherein video capture device (being specially the monitoring frontends such as all types of DVR, IPC), video forwarding server, video storage server form traditional video monitoring subsystem; RFID card reader, RFID label and RFID intermediary system etc. form traditional RFID identify label subsystem; Application server is the Core server that supports montage splicing business, its major function is to complete alternately some control commands of splicing montage with video forwarding server, RFID intermediary system, accepts the video flowing that forwards simultaneously, does that montage splicing is processed, and the video documents of storage splicing.
Application server is built-in with the correspondence table of the video monitoring equipments such as RFID card reader and video camera, table 1:
| RFID card reader | Video monitoring camera |
| 000001 | 000001 |
| 000002 | 000002 |
| 000003 | 000003 |
| 000004 | 000004 |
Table 1
Application server use table 1 inquires camera number corresponding to this road RFID card reader, so that application server forwards to forwarding server request the video flowing that this numbers corresponding Na No. mono-video camera.
Application server also stores moving object identity (RFID label) and the corresponding table of video documents thereof, table 2:
| RFID tag serial number | Video documents filename |
| 0001 | 0001 |
| 0002 | 0002 |
| 0003 | 0003 |
| 0004 | 0004 |
Table 2
Application server inquires the filename of the video documents of this mobile object according to table 2, open file video code flow subpackage is spliced and deposited in the document by montage.
The message structure of the triggering that RFID intermediary system is sent to application server or the statement of END instruction:
Directive statement structural information=card reader information+label information+video camera information+state.
Wherein state has triggering, finishes two kinds.
Trigger and finish the logic sequence figure of two events, with reference to Fig. 2 and Fig. 3.
RFID card reader is read respectively or is read less than label information when label turnover radiation scope, and RFID intermediary system is safeguarded a state machine for each label, according to the state variation of state machine, and judgement label turnover radiation scope.State machine demonstration is as Fig. 3.
RFID intermediary system is safeguarded a state machine for each label of each road RFID card reader of turnover, generates state machine when reading label information, cancels state machine when not reading label, and the acquiescence initial condition machine of state machine is not read label information.When entering, triggers mobile object montage splicing; Mobile object leaves and finishes montage splicing; The resident expression application server of mobile object is just in the process of montage splicing video flowing.
Two-path video code stream splicing based on transmission of video; Because any one unified video documents is built for certain mobile object, this mobile object at the volley always Cong Yi road RFID card reader transfer to another road RFID card reader, so the video-splicing of the document be to solve video camera corresponding to current RFID card reader video code flow how the code stream of video camera corresponding to He Shang mono-road RFID card reader do and merge.The code stream form, the specification that due to mobile object, experience at the volley Ge road video camera differ greatly, can select a type of coding, specification as reference format, by any moment, the video code flow of experience is all unified to change to this form, thereby completes the splicing of video code flow.
Code stream form (type of coding+image resolution ratio+frame per second):
Paper is coding and decoding video general knowledge once.The form of video code flow contains the following key element, the type of coding, such as Mpeg1, Mpeg2, Mpeg4, H.261, H.263, H.264, AVS etc.; The resolution of video frame images has CIF, 4CIF, QCIF, 16CIF, SD, high definition etc.; The implication of frame per second is the picture frame number of each second, and frame per second is relevant with the vision fluency that video shows.
The deblocking of network package: and existing video code flow montage splicing (document 1: Ding Xuewen, Hou Zhengxin etc., " mpeg 2 transport stream splicing ", < < electronic measurement technique > >, 2004, No.6, pp:72-73) difference be: what (1), the document 1 were paid close attention to is the splicing of the video transmission stream of cable television program; (2), the form that is spliced each code stream paid close attention to of the document 1 is consistent, thereby can realizes directly docking on code stream.The present embodiment mainly focuses on the splicing of the code stream between the different-format transmitting on internet.The IP network transmission of video code flow generally adopts TCP or udp protocol to carry out, and TCP transmission is often added into the byte composition of the privately owned definition of video camera producer, so only consider the splicing (note, RTP transmit based on udp protocol) of the video transmission stream of support standard RTP/RTCP agreement.IETF tissue defines the RTP closer system of different coding type, and our joining method is as long as pay close attention to the package that Mark flag bit is postamble, to obtain all packages of whole frame.If generation Network Packet Loss, abandons all the other all packages of this frame that this bag is relevant so.The payload portions of extracting each RTP package after all packages of acquisition whole frame is connected in series successively and forms video flowing to be decoded.This treatment step is exactly the process of deblocking.
Forwarding server has the code stream format information in each forwarding source, road: as shown in Figure 1, video forwarding server, except to video storage server forwards video flowing, also needs to forward to application server the video flowing of the request that is spliced.Therefore,, except safeguarding a forwarding channel table (table 3) as traditional video forwarding server, also need the code stream format information for a source video of each passage storage.
Table 3
Each passage as shown in table 3 contains the information that the video flowing of which camera apparatus is forwarded to which station server, and the destination being wherein forwarded to can be a plurality of.And the destination that different passages are forwarded to can be different, this is also to break through the limited consideration of system concurrency capacity.These are all the characteristics that traditional video forwarding server possesses above.Here in order to support splicing service, need designed channel table extraly must contain the code stream form of active video, to support the splicing of the code stream between different size.
As shown in Figure 2, application server is during to forwarding server request video flowing, forwarding server can send to application server " transmitted response instruction ", the passage remark information of table three li on automatic band in transmitted response instruction---and be source video code flow format information.Next the splicing processing module of application server is carried out deblocking to package, and the code stream that solution is honored as a queen and is formed, calls the video codec engine interface of application server local disposition and decode.Then, according to the reference format of splicing, the video stream format of i.e. splicing service requires (image resolution ratio, frame per second), does some processing: if the resolution of source video and the resolution of reference format are inconsistent, need to carry out bilinearity convergent-divergent to decoded image; If the frame per second of source video flowing is overstocked, excessively thin, do not mate with the frame per second that reference format requires, can suitably abandon present frame, copy present frame, thereby reach the effect of taking out frame, interleave, claim this to be treated to " interframe copies and deletes " here.Convergent-divergent and interframe copy the processing of deleting and only when format mismatching, enable, interface corresponding to baseline encoded type that finally current frame image is called to video codec engine is encoded, and newly-generated code stream is added in the unified video documents that this mobile object is corresponding.
Claims (10)
1. the multi-channel video montage splicing system based on moving object identify label, comprise for gathering the video camera of video, it is characterized in that: on each video camera side, road, install for reading the RFID card reader of RFID label, in described moving object, band is useful on the RFID label of indicate identification sign, and described multi-channel video montage splicing system also comprises:
Video forwarding server, for receiving and forward the video of camera acquisition;
Video storage server, for storing the video of camera acquisition
RFID intermediary system, the label information obtaining for the treatment of RFID card reader, and the identity of definite moving object; To application server, send the information that certain moving object arrives this road RFID card reader;
Application server, for the corresponding table of the RFID by video camera and deployment thereof, match video camera information corresponding to this road RFID, to video forwarding server, send the video Forward-reques about this road video camera, receive and forward the video package of coming, through video-splicing processing module, video packets is spliced in unified video documents corresponding to certain moving object;
In described video-splicing processing module, select a type of coding, specification as reference format, by any moment, the video code flow of experience is all unified to change to this form, thereby completes the splicing of video code flow.
2. the multi-channel video montage splicing system based on moving object identify label as claimed in claim 1, it is characterized in that: in described video-splicing processing module, package is carried out to deblocking, the code stream that solution is honored as a queen and is formed, calls the video codec engine interface of application server local disposition and decodes; Judge whether the form of source video meets the reference format of splicing, if, current frame image is called to the interface corresponding to baseline encoded type of video codec engine and encode, and newly-generated code stream is added in unified video documents corresponding to this moving object.
3. the multi-channel video montage splicing system based on moving object identify label as claimed in claim 2, it is characterized in that: in described video-splicing processing module, if the resolution of source video and the resolution of reference format are inconsistent, decoded image is carried out to bilinearity convergent-divergent.
4. the multi-channel video montage splicing system based on moving object identify label as claimed in claim 3, it is characterized in that: in described video-splicing processing module, if the frame per second of source video flowing is overstocked, excessively thin, do not mate with the frame per second that reference format requires, selection abandons present frame or copies present frame, thereby reaches the effect of taking out frame, interleave.
5. the multi-channel video montage splicing system based on moving object identify label as described in one of claim 1～4, it is characterized in that: RFID intermediary system is safeguarded a state machine for each label of each road RFID card reader of turnover, when reading label information, generate state machine, when not reading label, cancel state machine, the acquiescence initial condition machine of state machine is not read label information, triggers montage splicing when moving object enters; Moving object is left and is finished montage splicing; The resident expression application server of moving object is just in the process of montage splicing video flowing.
6. the multi-channel video montage splicing system based on moving object identify label as claimed in claim 5, it is characterized in that: triggering or END instruction that described RFID intermediary system is sent to application server, RFID card reader is read respectively or is read less than label information when label turnover radiation scope, RFID intermediary system is safeguarded a state machine for each label, according to the state variation of state machine, judgement label turnover radiation scope.
7. the multi-channel video montage joining method based on moving object identify label, it is characterized in that: multi-channel video montage splicing system comprises for gathering the video camera of video, on each video camera side, road, install for reading the RFID card reader of RFID label, in described moving object, band is useful on the RFID label of indicate identification sign, and described multi-channel video montage joining method comprises the steps:
1) label information that processing RF ID card reader obtains, and the identity of definite moving object; Send the information that certain moving object arrives this road RFID card reader, by the RFID correspondence of video camera and deployment thereof, show to match video camera information corresponding to this road RFID, send the video Forward-reques about this road video camera;
2) receive and forward the video package of coming, package is carried out to deblocking, and the code stream that solution is honored as a queen and is formed, calls the video codec engine interface of local disposition and decodes;
3) judge whether the form of source video meets the reference format of splicing, if, current frame image is called to the interface corresponding to baseline encoded type of video codec engine and encode, and newly-generated code stream is added in unified video documents corresponding to this moving object.
8. the multi-channel video montage joining method based on moving object identify label as claimed in claim 7, it is characterized in that: described step 3), if the resolution of source video and the resolution of reference format are inconsistent, decoded image is carried out to bilinearity convergent-divergent.
9. the multi-channel video montage joining method based on moving object identify label as claimed in claim 7, it is characterized in that: described step 3), if the frame per second of source video flowing is overstocked, excessively thin, do not mate with the frame per second that reference format requires, selection abandons present frame or copies present frame, thereby reaches the effect of taking out frame, interleave.
10. the multi-channel video montage joining method based on moving object identify label as described in one of claim 7～9, it is characterized in that: each label for each road RFID card reader of turnover is safeguarded a state machine, when reading label information, generate state machine, when not reading label, cancel state machine, the acquiescence initial condition machine of state machine is not read label information, triggers montage splicing when moving object enters; Moving object is left and is finished montage splicing; The resident expression application server of moving object is just in the process of montage splicing video flowing.
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Application publication date: 20141008 |