CN103079061B - A kind of video tracking processes device and video link processes device - Google Patents
A kind of video tracking processes device and video link processes device Download PDFInfo
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Abstract
The invention discloses a kind of video tracking and process device and video link process device, it is applied to monitoring system.When client receive user send about the trace command of the video image play after, sending the video link data about described image information to central server, central server is according to described video link data and follows the tracks of event identifier generation video link tables of data；In process of playback of video, client searches video link data on central server, and carries out video playback according to described video link data.The present invention by generating video link data in video playback or postmortem analysis process, and carry out video playback according to described video link tables of data, user can search suspicion target easily, determine the active procedure of suspected target, it might even be possible to suspected target event trace on map is carried out labelling.
Description
Technical field
The present invention relates to field of video monitoring, particularly relate to a kind of video tracking and process device and video link process device.
Background technology
When daily inspection or accident are reviewed, user needs the video by suspected target is relevant to be associated recovering and analysis.When suspected target occurs in video, user needs the end time of time started that the video camera at this video place of hand-kept, suspected target occur and disappearance.Afterwards, user needs to download there is the movable video of suspected target, is placed on unified catalogue, analyzes one by one and study and judge video.This method needs user to carry out substantial amounts of manual operation and analysis, and in large-scale monitoring system, owing to number of cameras is huge, the business of monitoring is also very complicated, and this to consume the time and efforts that operator are extremely many undoubtedly.
Summary of the invention
In view of this, the present invention provides the device that a kind of video tracking processes.By means of the invention it is possible to recall suspected target event trace on map easily, and the active procedure of suspected target in whole case, and when suspected target occurs in the video recording of multiple video cameras, it is possible to achieve synchronize to play.
For realizing the object of the invention, implementation of the present invention is specific as follows:
The present invention provides a kind of video tracking to process device, being applied to the client in monitoring system, described monitoring system also includes video camera and central server, and described client has access to the video image of each camera acquisition by central server, wherein, described device includes:
Operation processing unit, for receive that user sends for the trace command of specific tracking event time, send the trace command of correspondence to central server, to ask central server for its record video link data corresponding with this tracking event identifier；Wherein said tracking event identifier is distributed by described central server；
Editor's interactive unit, sends query statement for the tracking event specified according to user to central server, to obtain the video link data corresponding with this tracking event identifier from central server；
Video playback unit, for carrying out the broadcasting of video image according to these video link data.
The present invention also a kind of video link processes device, and this device is applied on the central server in monitoring system, including mark processing unit and chained list processing unit, it is characterised in that:
Mark processing unit, distributes globally unique tracking event identifier for the application according to client for it；
Chained list processing unit, after receiving the trace command of client, gather the video link data relevant to the current video image that this client is had access to, and the corresponding relation of these video link data Yu the tracking event identifier of client application is saved in video link tables of data；
Wherein this chained list processing unit be further used for receive that client sends for the query statement of the event of tracking time, obtain the video link data corresponding with this tracking event identifier, and these video link data be sent to this client.
Compared with prior art, the present invention by generating video link data in video playback or postmortem analysis process, and carries out video playback according to described video link tables of data, and user can search suspicion target easily, it is determined that the active procedure of suspected target.
Accompanying drawing explanation
Fig. 1 is the monitoring system group network figure that the present invention realizes.
Fig. 2 is the building-block of logic that the video tracking device of client-side in one embodiment of the present invention and central server side video link process device.
Detailed description of the invention
Refer to Fig. 1, the monitoring system network environment that the present invention realizes includes some video cameras, central server and client.Wherein client has access to fact or the history video image of the collection of each video camera by central server.When the suspected target of the daily inspection of user or its hope tracking concern of inspection discovery afterwards, the present invention allows the video camera that suspected target is occurred by user, the information unification such as time recorded in case video link tables of data, form the corresponding relation of usertracking event and video link data in the table, and then when tracking event is recalled by user again, by case video link tables of data, suspected target can be followed the tracks of more intuitively, suspected target active procedure in whole case can be determined easily, and when if suspected target occurs in the video recording of multiple video cameras, can synchronize to play.
For realizing the object of the invention, describe embodiment of the present invention in detail below in conjunction with accompanying drawing.Refer to Fig. 2, for a kind of video tracking device provided by the invention, it is applied to the client in monitoring system, as previously mentioned, monitoring system also includes multiple video camera and central server, described client has access to the video image of each camera acquisition by central server, and described video tracking device includes: operation processing unit, video playback unit and position tracking cell.Correspondingly, the present invention also provides for a kind of video link and processes device, and this device is applied on central server, including mark processing unit, chained list processing unit and map handling unit；For assisting described video tracking device to realize the tracking carrying out chain-type constantly from multiple camera video images under specific tracking event.Engagement process between central server and client is as follows, and this process includes three parts generally: Part I, the generation of video link data；The editor of Part II video link data；Part III, the playback of video link data.
Part I, the generation of video link data
Step 101, video playback unit has access to the video image of video camera according to the instruction of having access to of user to central server, and this video image is presented to user；
Step 102, operation processing unit according to the mark application operation of user to the globally unique tracking event identifier of the chained list processing unit application of central server；
Step 103, operation processing unit receive that user sends for the trace command of this tracking event time, send trace command to central server；
Step 104, after the chained list processing unit of central server receives described trace command, gather the video link data relevant to this client current video image, and the corresponding relation of these video link data Yu the tracking event identifier of client application is saved in video link tables of data；
Step 105, video playback unit indicates according to the switching of user and sends video image switching command to central server, to be had access to the video image of next video camera by centering server；
Step 106, when the chained list processing unit of central server receives video switching command, updates described video link tables of data；
Step 107, operation processing unit generates tracking END instruction according to the termination instruction of user and is sent to central server；
Step 108, when receiving tracking END instruction, chained list processing unit updates the video link data that this tracking event identifier is corresponding.
In video monitoring system, client can obtain the video image of camera acquisition under the assistance of central server, and presents described video image to user in the pane of client.In typical monitoring application, central server can be the management server of process fact scheduling can also be the management server processing and playing back video image scheduling, these servers are all on logical meaning, may be integrated on same physical server, it is also likely to be physically independent, depends on being actually needed of monitoring business.
At client-side, if the user find that the suspected target of its care (what be primarily referred to as some users care can move target), user is likely to pay close attention to the active situation in this suspected target a very long time in future, and the concern of this suspected target active situation is called tracking event by user in the present invention.In a tracking event, suspected target is likely to appear in the video image of a lot video cameras, such as move to the monitoring region of video camera B from the region of monitoring of video camera A, then move to again the monitoring region of video camera C, finally stop at again the monitoring region of video camera A.
In a large-scale monitoring system, may have many consumers and be tracked the process of event simultaneously, the result of the event of tracking may be shared with other users by one user, in order to assist user to distinguish different tracking events, it is desirable to have the mark of uniqueness is distinguish between.In the present invention, if user needs to process a tracking event, it can issue the mark application operation of correspondence by interactive interface, then operation processing unit can generate corresponding mark application instruction to central server, and the mark processing unit of central server can issue a globally unique tracking event identifier to client.In central server side, now central server will be considered that the information that the video image of each video camera that this user follow-up checks is relevant belongs to this tracking event identifier, until user terminates current tracking event by instruction.
In the process of the tracking event of real-time tracking event or postmortem analysis, when the user discover that suspected target, user can apply for that is followed the tracks of an event identifier at once, then carries out starting on interactive interface and follows the tracks of operation, and operation processing unit generates trace command and is sent to central server.After central server receives, the video link data of correspondence can be gathered at once for the tracking event identifier of user's application.Refer to the example of shown in table 1 a video link tables of data, in the present embodiment, video link data include: camera identification, time started, end time and tracking event identifier, occur in for recording suspected target in tracking event in the monitoring region of which video camera, and the time (end time) of the time (time started) occurred in camera supervised region and disappearance.Refer to the video link data of Case1 in table 1 and table 2, characterize certain suspected target and occur in video camera X and video camera Y, the content that time of occurrence in video camera X and video camera Y and extinction time are the time started and the end time records.
| Camera identification | Time started | End time | Follow the tracks of event identifier |
| Video camera X | StartTimeX | Case1 | |
| Video camera Y | |||
| ....... | ....... | ....... | ....... |
Table 1
Table 2
In a preferred embodiment, after user starts tracking event, suspected target may move to the video image of other video cameras from current video image (namely the monitoring region of current camera), and user needs to be switched to and observes under the video image of these other video cameras.Now user can send switching instruction in current interface, and video playback unit sends video image switching command to correspondingly central server.Owing to user has had been started up a tracking event, central server is after receiving this switching command, its chained list processing unit can carry out the renewal of video link data automatically, now this chained list processing unit mainly updates the time started of video camera after end time of current camera and switching, refer to the difference between table 1 and table 2, EndtimeX and StarttimeY is empty in Table 1, after receiving switching command, EndtimeX and StarttimeY just can be updated by the chained list processing unit of central server, same reason is when user switches again, EndTimeY also can be updated.Just because of this, in optimal way, it is not required to user and constantly carries out video link data renewal to the central server extra command request central server of transmission, the chained list processing unit of central server can be updated operation automatically according to the normal switching command of user, to be automatically performed the renewal of subsequent video chain data after realizing user's once-through operation, until receiving the tracking END instruction from client-side.Update mechanism in handoff procedure as previously mentioned, when the chained list processing unit of central server is after receiving tracking END instruction, it is only necessary to update the end time of last video camera.
Part II, the editor of video link data
Step 201, editor's interactive unit obtains the video link data corresponding with following the tracks of event identifier from central server and presents to user；
Step 202, the video link data after user being edited are sent to the chained list processing unit of central server and the video link data correspondence after this editor are saved.
In fact, user is following the tracks of in suspected target process it is possible that situations such as operational errors, for example, if user pays close attention to suspected target from after the video image of a video camera removes, user can send switching command and continue to follow the tracks of this suspected target to be switched to new video camera, but user is probably due to maloperation or do not know about the reasons such as monitoring topological and be switched to and do not have on the video camera of suspected target on a video image, when some are extreme, user's possible operation repeatedly could continue the tracking to suspected target.For this situation, the present invention allows the video link data that user has access to self generation on the client to edit, and then the result of editor is saved on central server.So user just can preserve its satisfied video link data a.
Part III, the playback of video link data
Step 301, video playback unit is specified the tracking event of broadcasting to call editor's interactive unit according to user and is sent query statement to central server；
Step 302, the chained list processing unit of central server obtains the video link Data Concurrent corresponding with this tracking event identifier after receiving this query statement and gives client；
Step 303, video playback unit carries out the broadcasting of video image according to these video link data.
After user completes tracking event, central server having have recorded complete video link data, these video link data can also be edited by certain user.When the video image of case is carried out recovering and analysis, user can send the tracking of a certain tracking event to client and play instruction, again checks whole tracking process.The mark of this tracking event can also be informed other users by certain user, in order to the whole process that can in self client check this tracking event the same as other users.After client receives the tracking broadcasting instruction of the event of following the tracks of for certain that user sends, video playback unit obtains the video link data corresponding with following the tracks of event identifier to the chained list processing unit of central server, then carries out the broadcasting of video image according to video link data.
Owing to video link tables of data including time started in one or more video camera of tracking event and end time, therefore client can have access to associated video image according to the time started in video link tables of data and end time from central server easily, it is possible to carries out the broadcasting of video image sequentially in time.Such as, during the time started StartTimeX of the video camera X time started StartTimeY less than video camera Y, then the video image first playing video camera X plays the video image of video camera Y again.Say for another example, as the end time EndTimeX of the video camera X time started StartTimeY less than video camera Y, after the video image of video camera X finishes playing, then play the video image of video camera Y.
Consider that multiple video camera simultaneously captures the situation of suspected target.User may want to follow the tracks of from different angles suspected target.Therefore in actual applications, user is likely to follow the tracks of same target by two tracking events of generation, and the video link data then passing through editor's central server merge to complete tracking event.Such as the mark of tracking event 2 is revised as 1, then two tracking events just can merge.In this case, in the process carrying out video playback, it is possible to be carved with the situation all having suspected target in two or more video image when there will be same.Such as when in hall, a market, four corners have video camera, suspected target to be positioned at hall central authorities, each video camera can capture this suspected target in video image simultaneously.
For case above, in a preferred embodiment of this invention, when described video playback unit is further used for simultaneously appearing in multiple video camera in tracking event, play, according to described video link data, the video image that each video camera is corresponding simultaneously.Such as, as the time started StartTimeX of the video camera X time started StartTimeY less than or equal to video camera Y, and during time started StartTimeY that the end time EndTimeX of video camera X is be more than or equal to video camera Y, when video image at video camera X is played to time StartTimeY, play the video image of video camera Y simultaneously.It should be noted that the pane wherein playing video can at same screen, it is also possible in different screens.As can be seen here, by generating video link tables of data in live business or postmortem analysis process, then video playback is carried out according to described video link tables of data.Such process greatly facilitates user's analysis to suspected target behavior.Such as when following the tracks of public vehicles, it is possible to know its course.Say for another example, the video image of a suspect is carried out played in order and is appreciated that its behavior is intended to, contribute to Public Security Organs and solve a case.
In the embodiment of another optimization, described video link data can also include camera position, refer to table 3, wherein camera position latX, lngX, altX represents, wherein latX is the latitude at video camera X place, and lngX is the longitude at video camera X place, and altX is the height above sea level of video camera X.
| Video camera | Time started | End time | Camera position | Follow the tracks of event identifier |
| Video camera X | StartTimeX | EndTimeX | latX,lngX,altX | Case1 |
| Video camera Y | StartTimeY | EndTimeY | latY,lngY,altY | Case1 |
| ... | ... | ... | ... | ... |
Table 3
Correspondingly, video tracking device also includes position tracking cell in the present embodiment, and central server then includes the map handling unit of correspondence.This position tracking cell is for obtaining GIS map from the map handling unit of central server, and marks out the video camera of correspondence in described GIS map according to the camera position information in the video link data of editor's interactive unit acquisition.Specifically, carry out in the process of video playback user, client receive user send map label instruction after, from central server obtain GIS map.Such as, when playing the video image of certain video camera in pane, described video camera can be marked in described GIS map according to camera position information, and described video camera is carried out Special display, namely in GIS map, the position of video camera corresponding to the video image played out is carried out the position from other video cameras and carry out different marks, different colours is such as adopted to be labeled, it is highlighted the icon of this video camera, or near the first camera icon, shows the red circle etc. of a change.
After the video image that described previous video camera is corresponding finishes, when continuing to play the second video image corresponding to next video camera corresponding to same tracking event, in GIS map, the position that described second video camera is corresponding is carried out Special display according to next camera position information, for instance high brightness shows the icon of the second video camera, shows the red circle of a change near the second camera icon.Position tracking cell can also cancel the Special display of the position that described first video camera is corresponding simultaneously.In order to facilitate user clearly to understand the order on time and path, position tracking cell can draw the position line to the position at next video camera place at previous video camera place in GIS map, such as draw a dotted line from the icon of previous video camera to next camera icon with arrow simultaneously, represent that suspected target transfers to next video camera from previous video camera.According to same step, described GIS map shows in video link tables of data next record, when the video image that video link data in whole tracking event are corresponding finishes, the event trace depicting suspected target complete in described GIS map.
Further, when the video image that video cameras multiple in video link tables of data are corresponding synchronizes to play, the position that described video camera is corresponding can be carried out Special display accordingly based upon camera position information by position tracking cell in GIS map simultaneously.And when now drawing suspected target event trace, it is possible to carry out suitable special handling.If the suspected target a certain moment occurs simultaneously in the video pictures of multiple video cameras; and the time started that suspected target enters each video camera is discrepant; if each video camera draw be clearly irrational, therefore can with suspected target occur first video camera or the most emerging video camera of suspected target be as the criterion and carry out track drafting.
By above operation, user just can recall suspected target event trace in GIS map easily, and the active procedure of suspected target in whole case, and under the premise saving bandwidth, can in described GIS map, carried out the dynamic effects such as Special display by the camera position that currently playing video is corresponding, very lively represents suspected target event trace in GIS map.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within the scope of protection of the invention.
Claims (8)
1. a video tracking processes device, being applied to the client in monitoring system, described monitoring system also includes video camera and central server, and described client has access to the video image of each camera acquisition by central server, it is characterized in that, described device includes:
Operation processing unit, for the mark application operation issued according to user, generates corresponding mark application instruction to central server, to ask central server to issue globally unique tracking event identifier；Receive that user sends for the trace command of specific tracking event time, send the trace command of correspondence to central server, to ask central server for its record video link data corresponding with this tracking event identifier；Wherein said tracking event identifier is distributed by described central server；
Editor's interactive unit, sends query statement for the tracking event specified according to user to central server, to obtain the video link data corresponding with this tracking event identifier from central server；
Video playback unit, for carrying out the broadcasting of video image according to these video link data；
Wherein, described video link data include: camera identification, time started and end time；And, the switching instruction that described video playback unit sends always according to user sends video image switching command to central server, making central server is the video image that client has access to next video camera, to assist client to be switched to the video image of next video camera from the video image of current camera, and central server is made to update the end time of current camera in described video link data and the time started of next video camera accordingly.
2. device as claimed in claim 1, it is characterized in that: described editor's interactive unit, it is further used for obtaining from central server presenting to user with tracking video link data corresponding to event identifier, and the video link data after user being edited are sent to central server.
3. device as claimed in claim 1, it is characterized in that, described video link data also include camera position information, described device also includes position tracking cell, for obtaining GIS map on central server, and the described camera position information got according to editor's interactive unit marks out this video camera in described GIS map.
4. device as claimed in claim 3, it is characterized in that, described position tracking cell is further used in video link tables of data the first video camera when the first corresponding video image plays, in GIS map, the position at described first video camera place is carried out Special display according to camera position information；And after the first video image that described first video camera is corresponding finishes, when continuing to play the second video image corresponding to the second video camera corresponding to same tracking event, the position that described second video camera is corresponding is carried out Special display by the positional information according to the second video camera in GIS map, and cancels the Special display of the position that described first video camera is corresponding.
5. device as claimed in claim 4, it is characterised in that described position tracking cell is further used for the line drawing the first video camera position in GIS map to the position at the second video camera place.
6. video link processes a device, and this device is applied on the central server in monitoring system, including mark processing unit and chained list processing unit, it is characterised in that:
Mark processing unit, distributes globally unique tracking event identifier for the application according to client for it；
Chained list processing unit, after receiving the trace command of client, gather the video link data relevant to the current video image that this client is had access to, and the corresponding relation of these video link data Yu the tracking event identifier of client application is saved in video link tables of data；
Wherein this chained list processing unit be further used for receive that client sends for the query statement of the event of tracking time, obtain the video link data corresponding with this tracking event identifier, and these video link data be sent to this client；
Wherein, described video link data include: camera identification, time started and end time；And, described chained list processing unit chained list is further used for, when the video switching command receiving client and indicating according to the switching that user sends and generate, the video image of next video camera is had access to for client, to assist client to be switched to the video image of next video camera from the video image of current camera, and update the end time of current camera in described video link data and the time started of next video camera accordingly.
7. device as claimed in claim 6, it is characterised in that described chained list processing unit chained list is further used for when receiving tracking END instruction, and chained list processing unit updates the end time of last video camera in the video link data that this tracking event identifier is corresponding.
8. device as claimed in claim 6, it is characterised in that also include map handling unit, is sent to client for the request according to client by corresponding GIS map.
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