CN102118611A - Digital video surveillance method, digital video surveillance system and digital video surveillance platform for moving object - Google Patents

Digital video surveillance method, digital video surveillance system and digital video surveillance platform for moving object Download PDF

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Publication number
CN102118611A
CN102118611A CN201110094286.0A CN201110094286A CN102118611A CN 102118611 A CN102118611 A CN 102118611A CN 201110094286 A CN201110094286 A CN 201110094286A CN 102118611 A CN102118611 A CN 102118611A
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video monitoring
digital video
camera
moving target
monitoring platform
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CN201110094286.0A
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CN102118611B (en
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邵海锋
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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Abstract

The embodiment of the invention discloses a digital video surveillance method, a digital video surveillance system and a digital video surveillance platform for a moving object, wherein the method comprises the steps as follows: a video surveillance client side detects coordinates (x1, y1) of the moving object that is clicked on a monitoring picture of a main video camera by a user, and sends the coordinates to the digital video surveillance platform; the digital video surveillance platform calculates coordinates difference value (x, y) between the coordinates (x1, y1) of the moving object and center coordinates (x2, y2) of the monitoring picture, wherein, x equals to x2 minus x1, and y equals to y2 minus y1; and the digital video surveillance platform controls a tripod head to rotate according to the coordinates difference value (x, y), so as to lead the moving object to be positioned in the center range of the monitoring picture. The embodiment of the invention can effectively track the moving object, and can achieve the video surveillance on the moving object.

Description

The digital video monitoring method and system of moving target, digital video monitoring platform
Technical field
The present invention relates to the video monitoring technology, relate in particular to a kind of digital video monitoring method and system, digital video monitoring platform of moving target.
Background technology
At present, many information technologies enterprise progressively enters the security protection service field, and has therefore improved the scientific and technological level of security protection service field.Along with development of technology, the significant progress that the safety monitoring technology also obtains.Up to now, simulation epoch, digital Age have been experienced in the development that is used for the video monitoring technology of safety monitoring service.Follow the construction of mega projects such as Chinese Shanghai World Expo and national safe city, gridding management, security protection work becomes lasting focus in recent years.And as the most direct means in the security protection work, video monitoring service has obtained using widely.
Video monitoring is applied along with closed-circuit television system the earliest, develops into the traditional analog video monitoring system then, and popularizing and the formation scale by analog video camera and analog video matrix.Digital video monitoring is to be accompanied by the development of digital video compaction technique and to rise, and with the trial of strength of analog video supervisory control system in show one's talent and established the application direction of main flow.The technology platform that combines with computer and network has greatly promoted the development of digital video technology, and has in time brought into play great potential.Digital video monitoring is at aspects such as hard-disc storage, remote transmission, flexible networking, video analysis, and the non-analog video supervisory control system of its superiority can be compared, and has pushed the space that exists of analog video monitoring application widely.In addition, the point-to-point optical fiber connecting method of the general employing of traditional analog video systems has consumed a large amount of fiber resources.Along with each province's public security Large scale construction " safe city ", digital video monitor system shared ratio in " safe city " built is increasing.
In realizing process of the present invention, the inventor finds that there is following problem at least in existing digital video monitoring technology:
During by single camera pursuit movement target, at this moment, the user can send the The Cloud Terrace instruction by the upper and lower, left and right button of pressing cradle head control zone on the monitoring screen, and the control The Cloud Terrace rotates toward the upper and lower, left and right four direction, thereby moving target is in the monitored picture scope.Because the client that image video camera end from the The Cloud Terrace is transferred to monitored picture in the digital video monitor system needs certain hour, and the The Cloud Terrace instruction also needs regular hour by Network Transmission to The Cloud Terrace from client, cause the The Cloud Terrace sluggish, dumb to controlling of The Cloud Terrace, video camera is not followed the tracks of the target of rapid movement, perhaps because the The Cloud Terrace rotation excessively makes moving target run off the monitored picture scope, therefore effective pursuit movement target, greatly limited the development of digital video monitoring business, for example, having limited digital video monitor system uses in the monitoring of " safe city " keypoint part.
Summary of the invention
Embodiment of the invention technical problem to be solved is: a kind of digital video monitoring method and system, digital video monitoring platform of moving target are provided, with effective pursuit movement target, realize the video monitoring to moving target.
For solving the problems of the technologies described above, the digital video monitoring method of a kind of moving target that the embodiment of the invention provides comprises:
Video monitoring client terminal detect the moving target that the user clicks on the main camera monitored picture coordinate (x1, y1) and send to the digital video monitoring platform;
The digital video monitoring platform calculate moving target coordinate (x1, y1) with the monitored picture centre coordinate (x2, y2) the coordinate difference between (x, y), wherein, x=x2-x1, y=y2-y1;
(x, y) the control The Cloud Terrace rotates described digital video monitoring platform, makes described moving target be positioned at the center range of described monitored picture with described coordinate difference.
A kind of digital video monitoring platform that the embodiment of the invention provides comprises:
Receiving element, coordinate (the x1 that is used for the moving target of receiver, video monitor client transmission, y1) information, (x1 y1) is detected when the user clicks described moving target on the main camera monitored picture by described video monitoring client terminal and obtains the coordinate of described moving target;
Computing unit, be used to calculate moving target coordinate (x1, y1) with the monitored picture centre coordinate (x2, y2) the coordinate difference between (x, y), wherein, x=x2-x1, y=y2-y1;
Control unit, be used for according to described coordinate difference (x, y) obtain The Cloud Terrace rotational parameters and generate cradle head control instruction, comprise the The Cloud Terrace rotational parameters in the described cradle head control instruction, when described The Cloud Terrace was pass on the parameter rotation according to described The Cloud Terrace, described moving target was positioned at the center range of described monitored picture;
Transmitting element is used for sending described cradle head control instruction to The Cloud Terrace, so that described The Cloud Terrace rotates according to described The Cloud Terrace rotational parameters.
The digital video monitor system of a kind of moving target that the embodiment of the invention provides comprises a plurality of front end units, and the compression of digital video encoder that described front end unit comprises The Cloud Terrace, is positioned at the video camera on this The Cloud Terrace and is connected with described video camera also comprises:
Video monitoring client terminal, be used to detect the coordinate (x1 of the moving target that the user clicks on the main camera monitored picture, y1) and send to described digital video monitoring platform, the video camera of current and described video monitoring client terminal video channel is a main camera in described a plurality of video cameras;
The digital video monitoring platform, be used to calculate moving target coordinate (x1, y1) with the monitored picture centre coordinate (x2, y2) the coordinate difference between (x, y), wherein, x=x2-x1, y=y2-y1; And with described coordinate difference (x, y) the control The Cloud Terrace rotates, and makes described moving target be positioned at the center range of described monitored picture.
The digital video monitoring method and system of the moving target that provides based on the above embodiment of the present invention, the digital video monitoring platform, the user can click moving target on the main camera monitored picture of video monitoring client terminal, video monitoring client terminal detects the coordinate (x1 of the moving target of user's click, y1), the digital video monitoring platform calculates the coordinate (x1 of moving target, y1) with monitored picture centre coordinate (x2, y2) the coordinate difference (x between, y), and control The Cloud Terrace with this and rotate, one click by the user, just can make moving target be positioned at the center range of monitored picture, thereby realized the effective tracking of single camera to moving target, realized video monitoring to moving target, compared with prior art, need not the user controls The Cloud Terrace by button rotation amplitude, the target that the The Cloud Terrace rotation amplitude is not followed the tracks of rapid movement inadequately when having avoided the user to control the The Cloud Terrace rotation, perhaps, The Cloud Terrace is controlled accurately because user's repeatable operation causes the The Cloud Terrace rotation excessively to make moving target run off the monitored picture scope, flexibly, efficiently.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of an embodiment of digital video monitoring method of moving target of the present invention;
Fig. 2 is a schematic diagram of monitored picture in the embodiment of the invention;
Fig. 3 is another schematic diagram of monitored picture in the embodiment of the invention;
Fig. 4 is the flow chart of another embodiment of digital video monitoring method of moving target of the present invention;
Fig. 5 is the structural representation of an embodiment of digital video monitoring platform of the present invention;
Fig. 6 is the structural representation of another embodiment of digital video monitoring platform of the present invention;
Fig. 7 is the structural representation of an embodiment of digital video monitor system of moving target of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 is the flow chart of an embodiment of digital video monitoring method of moving target of the present invention.As shown in Figure 1, the digital video monitoring method of this embodiment moving target comprises following flow process:
Step 101, video monitoring client terminal detect the moving target that the user clicks on the main camera monitored picture coordinate (x1, y1) and send to the digital video monitoring platform.
Particularly, the screen of video monitoring client terminal display monitoring picture can be touch display screen, has coordinate on the screen, when the user clicks moving target on the main camera monitored picture, video monitoring client terminal can know point that the user clicks on screen coordinate (x1, y1).With reference to figure 2, be a schematic diagram of monitored picture in the embodiment of the invention.
Step 102, digital video monitoring platform calculate moving target coordinate (x1, y1) with the monitored picture centre coordinate (x2, y2) the coordinate difference between (x, y), wherein, x=x2-x1, y=y2-y1.
Step 103, (x, y) the control The Cloud Terrace rotates the digital video monitoring platform, makes moving target be positioned at the center range of monitored picture with the coordinate difference.With reference to figure 3, be another schematic diagram of monitored picture in the embodiment of the invention.
The digital video monitoring method of the moving target that the above embodiment of the present invention provides, the user can click moving target on the main camera monitored picture of video monitoring client terminal, video monitoring client terminal detects the coordinate (x1 of the moving target of user's click, y1), the digital video monitoring platform calculates the coordinate (x1 of moving target, y1) with monitored picture centre coordinate (x2, y2) the coordinate difference (x between, y), and control The Cloud Terrace with this and rotate, one click by the user, just can make moving target be positioned at the center range of monitored picture, thereby realized the effective tracking of single camera to moving target, realized video monitoring to moving target, need not the user and control the rotation amplitude of The Cloud Terrace by button, the The Cloud Terrace rotation amplitude is followed the tracks of not Shang the target of rapid movement inadequately or is excessively made moving target run off the monitored picture scope owing to user's repeatable operation causes The Cloud Terrace to rotate when having avoided in the prior art user to control The Cloud Terrace rotating, and The Cloud Terrace is controlled accurately, flexibly, efficiently.
Particularly, in the step 103 embodiment illustrated in fig. 1, the digital video monitoring platform can be in the following manner, with the coordinate difference (x, y) the control The Cloud Terrace rotates:
The digital video monitoring platform is according to coordinate difference (x, y) obtain the The Cloud Terrace rotational parameters, which that is: toward direction rotate, rotation amplitude how much, when The Cloud Terrace is pass on the parameter rotation according to this The Cloud Terrace, can make moving target be positioned at the center range of monitored picture, that is: the central point of moving target roughly is positioned at the center of monitored picture, allows error by a small margin;
The digital video monitoring platform generates the cradle head control instruction and sends to The Cloud Terrace, comprises the The Cloud Terrace rotational parameters in this cradle head control instruction;
The Cloud Terrace rotates according to the The Cloud Terrace rotational parameters that the digital video monitoring platform sends.
Fig. 4 is the flow chart of another embodiment of digital video monitoring method of moving target of the present invention.As shown in Figure 4, the digital video monitoring method of this embodiment moving target comprises following flow process:
Step 201, video monitoring client terminal detect the user at the moving target of clicking on the main camera monitored picture whether beyond the boundary line, border at this monitored picture.If the moving target of clicking is beyond the boundary line, border of this monitored picture, execution in step 207.Otherwise, if the moving target of clicking is in the boundary line, border of this monitored picture scope, execution in step 202.
Step 202, video monitoring client terminal detect the moving target that the user clicks on the main camera monitored picture coordinate (x1, y1) and send to the digital video monitoring platform.
Step 203, digital video monitoring platform calculate moving target coordinate (x1, y1) with the monitored picture centre coordinate (x2, y2) the coordinate difference between (x, y), wherein, x=x2-x1, y=y2-y1.
Step 204, (x y) obtains the The Cloud Terrace rotational parameters to the digital video monitoring platform, when The Cloud Terrace is pass on the parameter rotation according to this The Cloud Terrace, can make moving target be positioned at the center range of monitored picture according to the coordinate difference.
Step 205, digital video monitoring platform generate the cradle head control instruction and send to The Cloud Terrace, comprise the The Cloud Terrace rotational parameters in this cradle head control instruction.
Step 206, The Cloud Terrace rotates according to the The Cloud Terrace rotational parameters that the digital video monitoring platform sends, and makes moving target be positioned at the center range of monitored picture.Afterwards, do not carry out the follow-up flow process of present embodiment.
Along with the change of moving target position, the user constantly clicks moving target and follows the tracks of this moving target on the main camera monitored picture, when the user clicks moving target at every turn, return the operation of carrying out above-mentioned steps 201.
Step 207, video monitoring client terminal detect the user when clicking moving target beyond the boundary line, border of main camera monitored picture, know that moving target shifts out the monitored picture of main camera, send the target following request to the digital video monitoring platform.
Last direction of motion when step 208, digital video monitoring platform are obtained moving target and shifted out monitored picture.
Particularly, as one embodiment of the present of invention, in the step 203, the digital video monitoring platform calculate at every turn the coordinate difference (x, y) after, can write down this coordinate difference (x, y).Accordingly, in this step 208, the digital video monitoring platform can be according to the coordinate difference (x that calculates at every turn, y), draw the movement locus of moving target, and according to the movement locus of moving target, the last direction of motion when obtaining moving target and shifting out monitored picture.
Further, the intelligent video analysis technology that the digital video monitoring platform can also be assisted is come the movement locus of correction motion target, approached the movement locus of moving target real motion track more, so that the last direction of motion when obtaining moving target more accurately and shifting out monitored picture.
Step 209, the digital video monitoring platform obtains the associated camera that is positioned on the last direction of motion, sets up video channel between associated camera and video monitoring client terminal, to show the monitored picture of associated camera at video monitoring client terminal.
Because the video file of camera acquisition transmits by video channel after needing compressed encoding to form video flowing usually, therefore set up video channel between associated camera and video monitoring client terminal, reality is to set up video channel between compression of digital video encoder that associated camera connects and video monitoring client terminal.
When step 210, video monitoring client terminal receive the target video camera of selecting from associated camera, with this target video camera as main camera, the operation of execution in step 201.
When but tracked moving target shifts out the monitoring range of current single camera, the digital video monitoring platform can be according to the movement locus of tracked moving target, judge that but moving target shifts out the last direction of motion of the monitoring range of current single camera, obtaining the monitored picture that is positioned at a plurality of associated camera on this last direction of motion calls for the user, follow the trail of this moving target with relay, realized effective tracking to moving target, improved the tracking efficient of moving target, owing to need not to set up associated camera separately, reduced the construction cost of the supervisory control system of pursuit movement target at this moving target.
In addition, as an alternative embodiment of the invention, in step 209 embodiment illustrated in fig. 4, the digital video monitoring platform can obtain the associated camera that is positioned on the last direction of motion in the following way:
The digital video monitoring platform obtains and is in the interior video camera of main camera effective range as the preliminary election video camera, and effective range is wherein determined by coverage L and effective angle N.Wherein, the value of L is greater than zero, and the value of N is greater than 0 degree and less than 360 degree.Particularly, the value of L and N can be preset rule of thumb value and determine that for example, when video camera density was big in the digital video monitor system, the value of L and N can be less, video camera density than hour, the value of L and N can be bigger;
The digital video monitoring platform calculates the selection reference value of each preliminary election video camera respectively according to formula P=(L1/L) * B1+ (N1/N) * B2.Wherein, L1 is the distance of preliminary election video camera to main camera, N1 is the angle between the preliminary election video camera and the last direction of motion, the numerical value of L1 and N1 can be according to the geographic position data of each video camera of storage in advance, for example: the longitude and latitude data on the geographical position, determine, B1 is the distance weighting factor, B2 is the angle weight factor, and the value of B1 and B2 is all greater than 0 and less than 1, and B1 and B2 sum are 1.The value of B1, B2 is more little, and corresponding weight is big more;
The digital video monitoring platform selecting selects one or more preliminary election video cameras of reference value P minimum as associated camera.
Based on above-mentioned algorithm, can be on the last direction of motion of moving target in the video camera in the main camera effective range, the distance of choosing main camera is less, with the less video camera of the last direction of motion angle of moving target as associated camera, thereby improve the tracking efficient of moving target, realize effective monitoring moving target.
Further, as another embodiment of the present invention, go out associated camera according to the selective sequential from small to large of P value, if the selection reference value P of each the preliminary election video camera that calculates is identical, can from the preliminary election video camera, select associated camera according to the priority level order of panoramic camera, monopod video camera, fixed cameras.Because the monitoring range of panoramic camera, monopod video camera, fixed cameras reduces successively, preferentially selects the big video camera of monitoring range as associated camera, more help realizing tracing and monitoring to moving target.
Fig. 5 is the structural representation of an embodiment of digital video monitoring platform of the present invention.The digital video monitoring platform of this embodiment can be used for realizing the corresponding function of digital video monitoring platform in the present invention's flow process embodiment illustrated in fig. 1.As shown in Figure 5, it comprises receiving element 301, computing unit 302, control unit 303 and transmitting element 304.
Wherein, receiving element 301 is used for the coordinate (x1 of the moving target of receiver, video monitor client transmission, y1) information, (x1 y1) is detected when the user clicks moving target on the main camera monitored picture by video monitoring client terminal and obtains the coordinate of this moving target.
Computing unit 302 be used to calculate the moving target that receiving element 301 receives coordinate (x1, y1) with the monitored picture centre coordinate (x2, y2) the coordinate difference between (x, y), wherein, x=x2-x1, y=y2-y1.
Control unit 303 is used for the coordinate difference (x that calculates according to computing unit 302, y) obtain The Cloud Terrace rotational parameters and generate cradle head control instruction, comprise the The Cloud Terrace rotational parameters in this cradle head control instruction, when The Cloud Terrace is pass on the parameter rotation according to The Cloud Terrace, can make moving target be positioned at the center range of monitored picture.
Transmitting element 304 is used for instructing to the cradle head control that The Cloud Terrace sending controling unit 303 generates, so that The Cloud Terrace rotates according to the The Cloud Terrace rotational parameters.
The digital video monitoring platform that the above embodiment of the present invention provides, when the user clicks moving target on the main camera monitored picture of video monitoring client terminal, the digital video monitoring platform can calculate the coordinate (x1 of moving target, y1) with main camera monitored picture centre coordinate (x2, y2) the coordinate difference (x between, y), and control The Cloud Terrace with this and rotate, one click by the user, just can make moving target be positioned at the center range of monitored picture, thereby realized the effective tracking of single camera to moving target, realized video monitoring to moving target, need not the user controls The Cloud Terrace by button rotation amplitude, the The Cloud Terrace rotation amplitude is followed the tracks of not Shang the target of rapid movement inadequately or is excessively made moving target run off the monitored picture scope owing to user's repeatable operation causes The Cloud Terrace to rotate when having avoided in the prior art user to control The Cloud Terrace rotating, and The Cloud Terrace controlled accurately, flexibly, efficiently.
Fig. 6 is the structural representation of another embodiment of digital video monitoring platform of the present invention.The digital video monitoring platform of this embodiment can be used for realizing the corresponding function of digital video monitoring platform in the digital video monitoring method embodiment flow process of above-mentioned each moving target of the present invention.Compare with embodiment shown in Figure 5, among this embodiment, receiving element also is used for the target following request that the receiver, video monitor client sends.Accordingly, the video monitoring platform of this embodiment also comprises first acquiring unit 305, second acquisition unit 306 and communication unit 307.
Wherein, first acquiring unit 305 is used for the target following request that receives in response to receiving element 301, the last direction of motion when obtaining moving target and shifting out monitored picture.Second acquisition unit 306 is used to obtain the associated camera that is positioned on the last direction of motion that first acquiring unit 305 gets access to.Communication unit 307 is used for setting up video channel between associated camera that second acquisition unit 306 gets access to and video monitoring client terminal, to show the monitored picture of associated camera at video monitoring client terminal, when video monitoring client terminal receives the target video camera of selecting from associated camera, with this target video camera as main camera.
In addition, again referring to Fig. 6, as an alternative embodiment of the invention, video monitoring platform can also comprise first memory cell 308, be used for coordinate difference on the main camera monitored picture of moving target that storage computation unit 302 calculates at every turn (x, y).Accordingly, the target following request that first acquiring unit 305 specifically receives in response to receiving element 301, according to the coordinate difference (x that calculates in first memory cell 308 at every turn, y), draw the movement locus of moving target, according to the movement locus of moving target, the last direction of motion when obtaining moving target and shifting out monitored picture.
Further, again referring to Fig. 6, as another embodiment of the present invention, video monitoring platform can also comprise second memory cell 309, is used for storing the geographical location information of each video camera of digital video monitor system.Accordingly, second acquisition unit 306 is specifically according to the geographical location information of each video camera in second memory cell 309, obtain and be in the interior video camera of main camera effective range as the preliminary election video camera, this effective range is determined by coverage L and effective angle N, wherein, the value of L is greater than zero, and the value of N is greater than 0 degree and less than 360 degree; According to formula P=(L1/L) * B1+ (N1/N) * B2, calculate the selection reference value of each preliminary election video camera respectively, wherein, L1 is the distance of preliminary election video camera to main camera, N1 is the angle between the preliminary election video camera and the last direction of motion, and B1 is the distance weighting factor, and B2 is the angle weight factor, the value of B1 and B2 is all greater than 0 and less than 1, and B1 and B2 sum are 1; One or more preliminary election video cameras of selecting reference value P minimum are as associated camera.
Fig. 7 is the structural representation of an embodiment of digital video monitor system of moving target of the present invention.The digital video monitor system of this embodiment moving target can be used for realizing the flow process of the digital video monitoring method embodiment of above-mentioned each moving target of the present invention.As shown in Figure 7, it comprises front end unit 1, video monitoring client terminal 2 and digital video monitoring platform 3.Can communicate to connect by internet or client cables successively between front end unit 1, video monitoring client terminal 2 and the digital video monitoring platform 3.
Wherein, front end unit 1 is a plurality of, the compression of digital video encoder that each front end unit 1 comprises The Cloud Terrace, is positioned at the video camera on this The Cloud Terrace and is connected with video camera.Can be by the rotation of The Cloud Terrace, for example: rotate upper and lower, left and right, make the corresponding change of monitoring range of the video camera on the The Cloud Terrace, after the video file that the compression of digital video encoder can obtain camera acquisition carries out compressed encoding, by video monitoring platform 3, communication unit 307 wherein for example, the video channel of foundation, video flowing is sent to video monitoring client terminal 2,2 pairs of video flowings of video monitoring client terminal carry out behind the uncompressed encoding promptly can monitored picture form watch monitoring on-the-spot.
Video monitoring client terminal 2 is used to detect the coordinate (x1 of the moving target that the user clicks on the main camera monitored picture, y1) and send to digital video monitoring platform 3, current and the video camera video monitoring client terminal video channel are main camera in a plurality of video cameras in a plurality of front end units 1.
Digital video monitoring platform 3 is used to calculate the coordinate (x1 of the moving target that video monitoring client terminal 2 sends, y1) with monitored picture centre coordinate (x2, y2) the coordinate difference (x between, y), and with coordinate difference (x, y) the control The Cloud Terrace rotates, and makes moving target be positioned at the center range of monitored picture.Wherein, x=x2-x1, y=y2-y1.In addition, the digital video monitoring platform can also be realized the storage of monitoring video that front end unit is uploaded, is transmitted to video monitoring client terminal.Specifically setting up video by the communication unit in the video monitoring platform 3 with video monitoring client terminal 2 is connected.
Particularly, as one embodiment of the present of invention, send to the compression of digital video encoder in the front end unit 1 behind the cradle head control command coding that digital video monitoring platform 3 also can rotate controlled motion, send to The Cloud Terrace after decoding by the compression of digital video encoder, come the rotation of corresponding control The Cloud Terrace.
The digital video monitor system of the moving target that the above embodiment of the present invention provides, the user can click moving target on the main camera monitored picture of video monitoring client terminal, video monitoring client terminal detects the coordinate (x1 of the moving target of user's click, y1), the digital video monitoring platform calculates the coordinate (x1 of moving target, y1) with monitored picture centre coordinate (x2, y2) the coordinate difference (x between, y), and control The Cloud Terrace with this and rotate, one click by the user, just can make moving target be positioned at the center range of monitored picture, thereby realized the effective tracking of single camera to moving target, realized video monitoring to moving target, need not the user and control the rotation amplitude of The Cloud Terrace by button, the The Cloud Terrace rotation amplitude is followed the tracks of not Shang the target of rapid movement inadequately or is excessively made moving target run off the monitored picture scope owing to user's repeatable operation causes The Cloud Terrace to rotate when having avoided in the prior art user to control The Cloud Terrace rotating, and The Cloud Terrace is controlled accurately, flexibly, efficiently.
Particularly, the digital video monitoring platform 3 in embodiment illustrated in fig. 7 specifically can adopt the above-mentioned Fig. 5 of the present invention to realize to the structure of any one embodiment shown in Figure 6, only shows the situation that digital video monitoring platform 3 adopts structure embodiment illustrated in fig. 6 among Fig. 7.
Each embodiment all adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that same or analogous part cross-references gets final product between each embodiment.For device, system embodiment, because it is similar substantially to method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
The embodiment of the invention has realized that single camera is to effective tracking of moving target and a plurality of associated camera relay tracking to moving target, realized video monitoring to moving target, to The Cloud Terrace control accurately, flexibly, efficient, thereby can provide high real-time, highly reliable, motion target tracking monitor service cheaply for " safe city " user.
Description of the invention provides for example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment that have various modifications that the present invention's design is suitable for special-purpose.

Claims (12)

1. the digital video monitoring method of a moving target is characterized in that, comprising:
Video monitoring client terminal detect the moving target that the user clicks on the main camera monitored picture coordinate (x1, y1) and send to the digital video monitoring platform;
The digital video monitoring platform calculate moving target coordinate (x1, y1) with the monitored picture centre coordinate (x2, y2) the coordinate difference between (x, y), wherein, x=x2-x1, y=y2-y1;
(x, y) the control The Cloud Terrace rotates described digital video monitoring platform, makes described moving target be positioned at the center range of described monitored picture with described coordinate difference.
2. method according to claim 1 is characterized in that, described digital video monitoring platform with described coordinate difference (x, y) the control The Cloud Terrace rotates and to comprise:
(x y) obtains the The Cloud Terrace rotational parameters to described digital video monitoring platform, and when described The Cloud Terrace was pass on the parameter rotation according to described The Cloud Terrace, described moving target was positioned at the center range of described monitored picture according to described coordinate difference;
Described digital video monitoring platform generates the cradle head control instruction and sends to described The Cloud Terrace, comprises the The Cloud Terrace rotational parameters in the described cradle head control instruction;
Described The Cloud Terrace rotates according to described The Cloud Terrace rotational parameters.
3. method according to claim 1 is characterized in that, also comprises:
Described video monitoring client terminal detects the user when clicking described moving target beyond the boundary line, border of described main camera monitored picture, know that described moving target shifts out the monitored picture of described main camera, send the target following request to described digital video monitoring platform;
Last direction of motion when described digital video monitoring platform obtains described moving target and shifts out described monitored picture;
Described digital video monitoring platform obtains the associated camera that is positioned on the described last direction of motion, between described associated camera and described video monitoring client terminal, set up video channel, to show the monitored picture of described associated camera at described video monitoring client terminal;
When described video monitoring client terminal receives the target video camera of selecting from described associated camera, with this target video camera as main camera, carry out described video monitoring client terminal detects the moving target that the user clicks on the main camera monitored picture coordinate (x1, y1) and send to the operation of digital video monitoring platform.
4. method according to claim 3 is characterized in that, also comprises:
Described digital video monitoring platform writes down described moving target on the main camera monitored picture time, according to the each coordinate of clicking of user (x1, the coordinate difference that y1) calculates (x, y);
(x y), draws the movement locus of described moving target to described digital video monitoring platform according to the coordinate difference that calculates at every turn;
Last direction of motion when described digital video monitoring platform obtains described moving target and shifts out described monitored picture comprises:
Described digital video monitoring platform is according to the movement locus of described moving target, the last direction of motion when obtaining described moving target and shifting out described monitored picture.
5. according to claim 3 or 4 described methods, it is characterized in that described digital video monitoring platform obtains the associated camera that is positioned on the described last direction of motion and comprises:
Described digital video monitoring platform obtains and is in the interior video camera of described main camera effective range as the preliminary election video camera, and described effective range is determined that by coverage L and effective angle N wherein, the value of L is greater than zero, and the value of N is greater than 0 degree and less than 360 degree;
Described digital video monitoring platform is according to formula P=(L1/L) * B1+ (N1/N) * B2, calculate the selection reference value of each preliminary election video camera respectively, wherein, L1 is the distance of preliminary election video camera to described main camera, N1 is the angle between the preliminary election video camera and the described last direction of motion, and B1 is the distance weighting factor, and B2 is the angle weight factor, the value of B1 and B2 is all greater than 0 and less than 1, and B1 and B2 sum are 1;
Described digital video monitoring platform selecting selects one or more preliminary election video cameras of reference value P minimum as associated camera.
6. method according to claim 5 is characterized in that, also comprises:
When the selection reference value P of preliminary election video camera is identical,, select the preliminary election video camera as associated camera according to the priority level order of panoramic camera, monopod video camera, fixed cameras.
7. a digital video monitoring platform is characterized in that, comprising:
Receiving element, coordinate (the x1 that is used for the moving target of receiver, video monitor client transmission, y1) information, (x1 y1) is detected when the user clicks described moving target on the main camera monitored picture by described video monitoring client terminal and obtains the coordinate of described moving target;
Computing unit, be used to calculate moving target coordinate (x1, y1) with the monitored picture centre coordinate (x2, y2) the coordinate difference between (x, y), wherein, x=x2-x1, y=y2-y1;
Control unit, be used for according to described coordinate difference (x, y) obtain The Cloud Terrace rotational parameters and generate cradle head control instruction, comprise the The Cloud Terrace rotational parameters in the described cradle head control instruction, when described The Cloud Terrace was pass on the parameter rotation according to described The Cloud Terrace, described moving target was positioned at the center range of described monitored picture;
Transmitting element is used for sending described cradle head control instruction to The Cloud Terrace, so that described The Cloud Terrace rotates according to described The Cloud Terrace rotational parameters.
8. digital video monitoring platform according to claim 7 is characterized in that, described receiving element also is used to receive the target following request that described video monitoring client terminal sends;
Described digital video monitoring platform also comprises:
First acquiring unit is used for the target following request that receives in response to described receiving element, the last direction of motion when obtaining described moving target and shifting out described monitored picture;
Second acquisition unit is used to obtain the associated camera that is positioned on the described last direction of motion;
Communication unit, be used between described associated camera and described video monitoring client terminal, setting up video channel, to show the monitored picture of described associated camera at described video monitoring client terminal, when described video monitoring client terminal receives the target video camera of selecting from described associated camera, with this target video camera as main camera.
9. digital video monitoring platform according to claim 8 is characterized in that, also comprises:
First memory cell, be used to store coordinate difference on the main camera monitored picture of described moving target that described computing unit calculates at every turn (x, y);
The target following request that described first acquiring unit specifically receives in response to described receiving element, according to the coordinate difference (x that calculates in described first memory cell at every turn, y), draw the movement locus of described moving target, according to the movement locus of described moving target, the last direction of motion when obtaining described moving target and shifting out described monitored picture.
10. according to Claim 8 or 9 described digital video monitoring platforms, it is characterized in that, also comprise:
Second memory cell is used for storing the geographical location information of each video camera of digital video monitor system;
Described second acquisition unit is specifically according to the geographical location information of each video camera in described second memory cell, obtain and be in the interior video camera of described main camera effective range as the preliminary election video camera, described effective range is determined by coverage L and effective angle N, wherein, the value of L is greater than zero, and the value of N is greater than 0 degree and less than 360 degree; According to formula P=(L1/L) * B1+ (N1/N) * B2, calculate the selection reference value of each preliminary election video camera respectively, wherein, L1 is the distance of preliminary election video camera to described main camera, N1 is the angle between the preliminary election video camera and the described last direction of motion, and B1 is the distance weighting factor, and B2 is the angle weight factor, the value of B1 and B2 is all greater than 0 and less than 1, and B1 and B2 sum are 1; One or more preliminary election video cameras of selecting reference value P minimum are as associated camera.
11. the digital video monitor system of a moving target comprises a plurality of front end units, the compression of digital video encoder that described front end unit comprises The Cloud Terrace, is positioned at the video camera on this The Cloud Terrace and is connected with described video camera is characterized in that, also comprises:
Video monitoring client terminal, be used to detect the coordinate (x1 of the moving target that the user clicks on the main camera monitored picture, y1) and send to described digital video monitoring platform, the video camera of current and described video monitoring client terminal video channel is a main camera in described a plurality of video cameras;
The digital video monitoring platform, be used to calculate moving target coordinate (x1, y1) with the monitored picture centre coordinate (x2, y2) the coordinate difference between (x, y), wherein, x=x2-x1, y=y2-y1; And with described coordinate difference (x, y) the control The Cloud Terrace rotates, and makes described moving target be positioned at the center range of described monitored picture.
12. system according to claim 11 is characterized in that, described digital video monitoring platform is specially any described digital video monitoring platform of claim 7 to 10.
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