CN102231799B - Instantaneous optical locating system of PTZ camera and method thereof - Google Patents

Abstract

An instantaneous optical locating system of PTZ camera is provided. The system comprises: a wide angle camera, which is used to shoot a wide angle video in vision field of a large scene; a PTZ camera, which is used to shoot a partial amplification video in the vision field of the large scene; an operation maintenance platform, which is used for a user to intercept and click shooting image of the wide angle camera; a preposition processing apparatus, which is used to receive an instruction of the user, establish a coordinate relation mapping between the wide angle camera and the PTZ camera and determine amplification times of the PTZ camera. An instantaneous optical locating method of the PTZ is also provided. The method comprises the following steps: intercepting and clicking the shooting image of the wide angle camera by the user; establishing the coordinate relation mapping between the wide angle camera and the PTZ camera and determining the amplification times of the PTZ camera; controlling the PTZ camera to align a target object. By using the system and the method of the invention, the intercepted or clicked wide area video image by the user can be converted into a PTZ motion control instruction so as to obtain the image optically amplified by the PTZ camera. Operation is convenient and processing is fast.

Description

The instantaneous optics of a kind of Pan/Tilt/Zoom camera system in place and method thereof

Technical field

The present invention relates to a kind of two camera systems and method thereof that is consisted of by wide-angle imaging machine and Pan/Tilt/Zoom camera, relate in particular to the instantaneous optics of a kind of Pan/Tilt/Zoom camera system in place and method thereof.

Background technology

At road traffic, the two camera systems that consisted of by wide-angle imaging machine and Pan/Tilt/Zoom camera have been used in the increasing fields such as residential quarter or building security.Wherein the wide-angle imaging machine is used for taking large-scale wide area video, the local amplified video that Pan/Tilt/Zoom camera then can the adjusting focal length shooting clear.

When in the user finds wide area video that the wide-angle imaging machine takes, interested destination object being arranged, need to switch to the captured clear picture of Pan/Tilt/Zoom camera of coverage goal object.Yet in the prior art, the user need to utilize keyboard to carry out aforesaid operations, and operation is trouble very, and needs manually to adjust the focal length of Pan/Tilt/Zoom camera, may incur loss through delay the best opportunity of target object.Concrete with reference to shown in Figure 3, what PTZ ball machine adopted in the prior art is the keyboard operation method, the user by physical keyboard or software virtual keyboard carry out " on ", the operations such as D score, " left side ", " right side ", " amplification ", " dwindling ".Method by keyboard operation, the user wants camera lens to aim at some interested zones and amplification, need to repeatedly carry out " on ", D score, " left side ", " right side ", " amplification ", " dwindling " etc. operation, generally need tens seconds even tens seconds.

Therefore, be necessary to propose a kind of new two camera systems to solve above-mentioned technological deficiency.

Summary of the invention

The present invention aims to provide the instantaneous optics of a kind of Pan/Tilt/Zoom camera system in place and method thereof, thus by pre-procesor can be instantaneous be that the PTZ motion control instruction obtains the image behind the Pan/Tilt/Zoom camera optical amplifier with the user in the intercepting of wide area video image or the image transitions clicked.

In order to solve the problems of the technologies described above, the technical solution used in the present invention comprises for providing the instantaneous optics of a kind of Pan/Tilt/Zoom camera system in place: the wide-angle imaging machine is used for taking the wide-angle video in the large scene ken; Pan/Tilt/Zoom camera is used for taking the local amplified video in the large scene ken; The Operation and Maintenance platform is located at user side, intercepts or clicks for interested destination object in the photographic images of user to the wide-angle imaging machine; Pre-procesor, with Operation and Maintenance platform, described wide-angle imaging machine and the communication connection of described Pan/Tilt/Zoom camera, thereby be used for receiving described user instruction, between wide-angle imaging machine and Pan/Tilt/Zoom camera, set up the coordinate relationship map and determine that the multiplication factor of Pan/Tilt/Zoom camera carries out motion control to Pan/Tilt/Zoom camera.

Preferably, described pre-procesor comprises: coordinate mapping module is used for setting up the multiplication factor that the coordinate relationship map is also determined Pan/Tilt/Zoom camera according to user instruction between wide-angle imaging machine and Pan/Tilt/Zoom camera; And the PTZ motion-control module, with described coordinate mapping module communication connection, be used for generating corresponding movement instruction according to coordinate relationship map and multiplication factor that coordinate mapping module produces, make the place-centric of the picture centrally aligned destination object of Pan/Tilt/Zoom camera.

Preferably, the instantaneous optics of described Pan/Tilt/Zoom camera system in place also comprises management server, with described Operation and Maintenance platform communication connection and described pre-procesor, be used for receiving user's instruction and user instruction is distributed to described pre-procesor and process; Video acquisition module describedly is connected with wide-angle imaging machine and Pan/Tilt/Zoom camera, is used for obtaining the video that wide-angle imaging machine and Pan/Tilt/Zoom camera are taken; Image processing module with described video acquisition module and the communication connection of described coordinate mapping module, is used for the optical distortion that camera lens causes is corrected; And the RS232/R485 conversion equipment, with described PTZ motion control device and Pan/Tilt/Zoom camera communication connection, be used for that the movement instruction that the PTZ motion-control module generates is sent to Pan/Tilt/Zoom camera Pan/Tilt/Zoom camera is adjusted accordingly.

Preferably, the multiplication factor of described Pan/Tilt/Zoom camera is determined according to following formula:

f _PTZ＝min{α _w，α _h}·f _WAC

Wherein, min{ α _w, α _hBe illustrated in α _wAnd α _hMiddle selected value is less, and

${\mathrm{\α}}_w=\frac{w_{\mathrm{wac}}}{w_{t\arg \mathrm{et}}}\·\frac{{\mathrm{sw}}_{\mathrm{ptz}}}{{\mathrm{sw}}_{\mathrm{wac}}};$ ${\mathrm{\α}}_h=\frac{h_{\mathrm{wac}}}{h_{t\arg \mathrm{et}}}\·\frac{{\mathrm{sh}}_{\mathrm{ptz}}}{{\mathrm{sh}}_{\mathrm{wac}}}$

f _WACThe focal length of wide-angle imaging machine, sw _WacAnd sh _WacRespectively the length of wide-angle imaging machine imageing sensor and wide, sw _PtzAnd sh _PtzRespectively the length of Pan/Tilt/Zoom camera imageing sensor and wide, w _WacAnd h _WacRespectively the length of wide-angle imaging machine full width picture and wide, w _TargetAnd h _TargetRespectively length in wide-angle imaging machine picture of the target of need amplifying and wide, f _PTZIt is the focal length of Pan/Tilt/Zoom camera.

The present invention also provides a kind of Pan/Tilt/Zoom camera instantaneous optics installation method, comprises step:

1) interested destination object intercepts or clicks in the photographic images of user to the wide-angle imaging machine;

2) setting up the coordinate relationship map between wide-angle imaging machine and Pan/Tilt/Zoom camera and according to length and length and length and length and the wide multiplication factor of determining Pan/Tilt/Zoom camera of target in wide-angle imaging machine picture wide, that needs amplify wide, wide-angle imaging machine full width picture wide, the Pan/Tilt/Zoom camera imageing sensor of the focal length of wide-angle imaging machine, wide-angle imaging machine imageing sensor according to user instruction; And

3) generate corresponding movement instruction according to the coordinate relationship map and the multiplication factor that produce, the place-centric of the picture centrally aligned destination object of control Pan/Tilt/Zoom camera.

Preferably, described step 1) finished with mouse at the Operation and Maintenance platform by the user; Described step 2) finished by coordinate mapping module in the pre-procesor; Described step 3) finished by PTZ motion-control module in the pre-procesor.

Preferably, the multiplication factor of Pan/Tilt/Zoom camera described step 2) is determined according to following formula:

f _PTZ＝min{α _w，α _h}·f _WAC

Wherein, min{ α _w, α _hBe illustrated in α _wAnd α _hMiddle selected value is less, and

${\mathrm{\α}}_w=\frac{w_{\mathrm{wac}}}{w_{t\arg \mathrm{et}}}\·\frac{{\mathrm{sw}}_{\mathrm{ptz}}}{{\mathrm{sw}}_{\mathrm{wac}}};$ ${\mathrm{\α}}_h=\frac{h_{\mathrm{wac}}}{h_{t\arg \mathrm{et}}}\·\frac{{\mathrm{sh}}_{\mathrm{ptz}}}{{\mathrm{sh}}_{\mathrm{wac}}}$

f _WACThe focal length of wide-angle imaging machine, sw _WacAnd sh _WacRespectively the length of wide-angle imaging machine imageing sensor and wide, sw _PtzAnd sh _PtzRespectively the length of Pan/Tilt/Zoom camera imageing sensor and wide, w _WacAnd h _WacRespectively the length of wide-angle imaging machine full width picture and wide, w _TargetAnd h _TargetRespectively length in wide-angle imaging machine picture of the target of need amplifying and wide, f _PTZIt is the focal length of Pan/Tilt/Zoom camera.

Preferably, the instantaneous optics installation method of described Pan/Tilt/Zoom camera also comprises the step that the optical distortion that camera lens caused by image processing module in the pre-procesor is corrected; Receive user's instruction and user instruction is distributed to the step that described pre-procesor is processed by management server.

Described mapping of setting up the coordinate relation between wide-angle imaging machine and Pan/Tilt/Zoom camera can be 20110119042.3 with reference to another application number of the applicant, and denomination of invention is the patent application of " video monitoring system for multi-target tracking close-up shooting ".In simple terms, vertical height angle θ and horizontal azimuth that coordinate transferring utilizes the two-dimensional coordinate (x, y) of arbitrfary point projection on the plane of delineation of the wide-angle video that described the first camera system is taken in the large scene ken that Coordinate Conversion mechanism takes the first camera system to be converted to a selecteed Pan/Tilt/Zoom camera in the second camera system when the heart is aimed at described arbitrfary point therein

, wherein said Coordinate Conversion mechanism is to set up by at least three arbitrfary points choosing at random in the described large scene ken.The Coordinate Conversion equation is:

Wherein, $r=\sqrt{\frac{{(x-c_x)}^2}{f_x^2}+\frac{{(y-c_y)}^2}{f_y^2}+1}$

f _x, f _yThe focal length with pixel x and the y direction unit of being of a size of, (c _x, c _y) be the coordinate of wide-angle imaging machine optical centre projection on the picture plane, A is described Coordinate Conversion mapping parameters matrix.

By the instantaneous optics of Pan/Tilt/Zoom camera of the present invention system in place and method thereof, when the user utilizes mouse to carry out the picture frame intercepting or clicks such simple operations, by pre-procesor can be instantaneous be thereby that the PTZ motion control instruction obtains the image behind the Pan/Tilt/Zoom camera optical amplifier with the user in the intercepting of wide area video image or the image transitions clicked, not only simple operation but also whole processing procedure are very quick, generally in 0.5 second, almost just can allow Pan/Tilt/Zoom camera point to target area and optical amplifier in moment, greatly improve with traditional PTZ keyboard operation method phase specific efficiency.

Description of drawings

Be described further below in conjunction with the hinged connecting device of the drawings and specific embodiments to steel construction of the present invention.

Fig. 1 is the schematic diagram of the instantaneous optics of Pan/Tilt/Zoom camera of the present invention system in place;

Fig. 2 is for passing through the instantaneous optics of Pan/Tilt/Zoom camera of the present invention system and method in place with the schematic diagram of the image moment optical amplifier of user's intercepting or click, and its left figure is the image that the wide-angle imaging machine is taken, and right figure is the image of optical amplifier; And

Fig. 3 is the keyboard schematic diagram that utilizes keyboard that Pan/Tilt/Zoom camera is controlled in the prior art.

Embodiment

As shown in Figure 1, the instantaneous optics of Pan/Tilt/Zoom camera of the present invention system in place comprises: wide-angle imaging machine 10, Pan/Tilt/Zoom camera 20, Operation and Maintenance platform 30, management server 40 and pre-procesor 50.

Described wide-angle imaging machine 10 is used for taking the wide-angle video in the large scene ken.Described Pan/Tilt/Zoom camera 20 is used for taking the local amplified video in the large scene ken.

Described Operation and Maintenance platform 30 is located at user side, intercepts or clicks by interested destination object in the photographic images of mouse to described wide-angle imaging machine 10 for the user, for institute's truncated picture is carried out optical amplifier.

Described management server 40 with described Operation and Maintenance platform 30 communication connections, is used for receiving user's instruction and distributing.

Described pre-procesor 50, with described management server 40, described wide- angle imaging machine 10 and 20 communication connections of described Pan/Tilt/Zoom camera, thus be used for 40 distributions of receiving management server user instruction, set up the coordinate relationship map and determine that the multiplication factor of described Pan/Tilt/Zoom camera 20 carries out motion control to described Pan/Tilt/Zoom camera 20 at described wide- angle imaging machine 10 and 20 of described Pan/Tilt/Zoom cameras.

Described pre-procesor 50 comprises: video acquisition module 51, image processing module 52, coordinate mapping module 53, PTZ motion-control module 54 and RS232/R485 conversion equipment 55.

Described video acquisition module 51 describedly is connected with wide-angle imaging machine 10 and Pan/Tilt/Zoom camera 20, is used for obtaining wide-angle imaging machine 10 and Pan/Tilt/Zoom camera is taken 20 video.Described image processing module 52 with described video acquisition module 51 communication connections, is used for the optical distortion that camera lens causes is corrected.Described coordinate mapping module 53 with described image processing module 52 communication connections, is used for setting up at described wide- angle imaging machine 10 and 20 of described Pan/Tilt/Zoom cameras according to user instruction the multiplication factor of coordinate relationship map and definite described Pan/Tilt/Zoom camera 20.Described PTZ motion-control module 54, with described coordinate mapping module 53 communication connections, be used for generating corresponding movement instruction according to coordinate relationship map and multiplication factor that coordinate mapping module 53 produces, make the place-centric of the picture centrally aligned destination object of described Pan/Tilt/Zoom camera 20.Described RS232/R485 conversion equipment 55, with described PTZ motion control device 54 and 20 communication connections of described Pan/Tilt/Zoom camera, be used for that the movement instruction that described PTZ motion-control module 54 generates is sent to described Pan/Tilt/Zoom camera 20 described Pan/Tilt/Zoom camera 20 is adjusted accordingly.

The instantaneous optics installation method of Pan/Tilt/Zoom camera of the present invention comprises the steps:

1) interested destination object intercepts or clicks in the photographic images of user to the wide-angle imaging machine;

2) setting up the coordinate relationship map between wide-angle imaging machine and Pan/Tilt/Zoom camera and according to length and length and length and length and the wide multiplication factor of determining Pan/Tilt/Zoom camera of target in wide-angle imaging machine picture wide, that needs amplify wide, wide-angle imaging machine full width picture wide, the Pan/Tilt/Zoom camera imageing sensor of the focal length of wide-angle imaging machine, wide-angle imaging machine imageing sensor according to user instruction; And

3) generate corresponding movement instruction according to the coordinate relationship map and the multiplication factor that produce, the place-centric of the picture centrally aligned destination object of control Pan/Tilt/Zoom camera.

Preferably, described step 1) finished at Operation and Maintenance platform 30 usefulness mouses by the user; Described step 2) finished by coordinate mapping module 53 in the pre-procesor 50; Described step 3) finished by PTZ motion-control module 54 in the pre-procesor 50.

Preferably, also comprise the step that the optical distortion that caused by 52 pairs of camera lens of image processing module in the pre-procesor 50 is corrected, and receive users' instruction and user instruction is distributed to the step that described pre-procesor 50 is processed by management server 40.

As shown in Figure 2, the user wants enlarged image (such as left figure) in the intercepting of wide area image or click that Operation and Maintenance platform 30 usefulness mouses are taken at wide-angle imaging machine 10, moment pre-procesor 50 meetings be converted to the PTZ motion control instruction with this user instruction, namely to the exact position of the moving horizontally of Pan/Tilt/Zoom camera 20 (Pan) and vertical mobile (Tilt) and multiplication factor (focal length) thus determine to obtain by the image behind Pan/Tilt/Zoom camera 20 optical amplifiers (such as right figure), whole operating process was finished in 0.5 second, far away faster than traditional PTZ keyboard-type operator scheme.

Below further set forth the instantaneous optics of Pan/Tilt/Zoom camera of the present invention system and method in place is set up the multiplication factor of the mapping of coordinate relation and definite Pan/Tilt/Zoom camera between wide-angle imaging machine and Pan/Tilt/Zoom camera according to user instruction realization principle.

The multiplication factor of described Pan/Tilt/Zoom camera 20 is that the focal length that Pan/Tilt/Zoom camera adopts when taking target area in the large scene ken is determined according to following formula:

f _PTZ＝min{α _w，α _h}·f _WAC

Wherein, min{ α _w, α _hBe illustrated in α _wAnd α _hMiddle selected value is less, and

${\mathrm{\α}}_w=\frac{w_{\mathrm{wac}}}{w_{t\arg \mathrm{et}}}\·\frac{{\mathrm{sw}}_{\mathrm{ptz}}}{{\mathrm{sw}}_{\mathrm{wac}}};$ ${\mathrm{\α}}_h=\frac{h_{\mathrm{wac}}}{h_{t\arg \mathrm{et}}}\·\frac{{\mathrm{sh}}_{\mathrm{ptz}}}{{\mathrm{sh}}_{\mathrm{wac}}}$

f _WACThe focal length of wide-angle imaging machine, sw _WacAnd sh _WacRespectively the length of wide-angle imaging machine imageing sensor and wide, sw _PtzAnd sh _PtzRespectively the length of Pan/Tilt/Zoom camera imageing sensor and wide, w _WacAnd h _WacRespectively the length of wide-angle imaging machine full width picture and wide, w _TargetAnd h _TargetRespectively length in wide-angle imaging machine picture of the target of need amplifying and wide, f _PTZIt is the focal length of Pan/Tilt/Zoom camera.

Described mapping of setting up the coordinate relation between wide-angle imaging machine and Pan/Tilt/Zoom camera can be 20110119042.3 with reference to another application number of the applicant, and denomination of invention is the patent application of " video monitoring system for multi-target tracking close-up shooting ".In simple terms, vertical height angle θ and horizontal azimuth that coordinate transferring utilizes the two-dimensional coordinate (x, y) of arbitrfary point projection on the plane of delineation of the wide-angle video that described the first camera system is taken in the large scene ken that Coordinate Conversion mechanism takes the first camera system to be converted to a selecteed Pan/Tilt/Zoom camera in the second camera system when the heart is aimed at described arbitrfary point therein

, wherein said Coordinate Conversion mechanism is to set up by at least three arbitrfary points choosing at random in the described large scene ken.Described Coordinate Conversion mechanism is set up by following steps:

Choose an arbitrfary point that is positioned at the large scene ken;

Vertical height θ and the horizontal azimuth of the Pan/Tilt/Zoom camera of determining described the second camera system when the heart is aimed at described arbitrfary point with calibration therein

Determine that described arbitrfary point is projeced into the coordinate (x, y) on the wide-angle video image plane that described the first camera system takes;

Determine a Coordinate Conversion mapping parameters matrix A by the above-mentioned data of choosing at random at least three arbitrfary points;

Utilize described mapping parameters matrix A set up the vertical height angle of picture planar pixel coordinate (x, y) and the Pan/Tilt/Zoom camera of corresponding the second camera system of video camera of described the first camera system and horizontal azimuth (θ,

) between the Coordinate Conversion equation:

Wherein, $r=\sqrt{\frac{{(x-c_x)}^2}{f_x^2}+\frac{{(y-c_y)}^2}{f_y^2}+1}$

f _x, f _yThe focal length with pixel x and the y direction unit of being of a size of, (c _x, c _y) be the coordinate of wide-angle imaging machine optical centre projection on the picture plane, A is described Coordinate Conversion mapping parameters matrix.

Pass through technique scheme, when the user utilizes mouse to carry out the picture frame intercepting or clicks such simple operations, by pre-procesor can be instantaneous be thereby that the PTZ motion control instruction obtains the image behind the Pan/Tilt/Zoom camera optical amplifier with the user in the intercepting of wide area video image or the image transitions clicked, not only simple operation but also whole processing procedure are very quick, generally in 0.5 second, almost just can allow Pan/Tilt/Zoom camera point to target area and optical amplifier in moment, greatly improve with traditional PTZ keyboard operation method phase specific efficiency.

The above only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet be not to limit the present invention, any those skilled in the art, in the scope that does not break away from technical solution of the present invention, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all still belong in the scope of technical solution of the present invention.

Claims (8)

1. the instantaneous optics of a Pan/Tilt/Zoom camera system in place is characterized in that, comprising:

The wide-angle imaging machine is used for taking the wide-angle video in the large scene ken;

Pan/Tilt/Zoom camera is used for taking the local amplified video in the large scene ken;

The Operation and Maintenance platform is located at user side, intercepts or clicks for interested destination object in the photographic images of user to the wide-angle imaging machine;

Pre-procesor, with Operation and Maintenance platform, described wide-angle imaging machine and the communication connection of described Pan/Tilt/Zoom camera, be used for to receive user instruction, set up the coordinate relationship map and determine that thereby the multiplication factor of Pan/Tilt/Zoom camera carries out motion control to Pan/Tilt/Zoom camera between wide-angle imaging machine and Pan/Tilt/Zoom camera, the multiplication factor of described Pan/Tilt/Zoom camera is determined according to following formula:

f _PTZ＝min{α _w，α _h}·f _WAC

Wherein, min{ α _w, α _hBe illustrated in α _wAnd α _hMiddle selected value is less, and

${\mathrm{\α}}_w=\frac{w_{\mathrm{wac}}}{w_{t\arg \mathrm{et}}}\·\frac{{\mathrm{sw}}_{\mathrm{ptz}}}{{\mathrm{sw}}_{\mathrm{wac}}};$ ${\mathrm{\α}}_h=\frac{h_{\mathrm{wac}}}{h_{t\arg \mathrm{et}}}\·\frac{{\mathrm{sh}}_{\mathrm{ptz}}}{{\mathrm{sh}}_{\mathrm{wac}}}$

f _WACThe focal length of wide-angle imaging machine, sw _WacAnd sh _WacRespectively the length of wide-angle imaging machine imageing sensor and wide, sw _PtzAnd sh _PtzRespectively the length of Pan/Tilt/Zoom camera imageing sensor and wide, w _WacAnd h _WacRespectively the length of wide-angle imaging machine full width picture and wide, w _TargetAnd h _TargetRespectively length in wide-angle imaging machine picture of the target of need amplifying and wide, f _PTZIt is the focal length of Pan/Tilt/Zoom camera.

2. the instantaneous optics of Pan/Tilt/Zoom camera as claimed in claim 1 system in place is characterized in that, described pre-procesor comprises:

Coordinate mapping module is used for setting up the multiplication factor that the coordinate relationship map is also determined Pan/Tilt/Zoom camera according to user instruction between wide-angle imaging machine and Pan/Tilt/Zoom camera; And

The PTZ motion-control module with described coordinate mapping module communication connection, is used for generating corresponding movement instruction according to coordinate relationship map and multiplication factor that coordinate mapping module produces, makes the place-centric of the picture centrally aligned destination object of Pan/Tilt/Zoom camera.

3. the instantaneous optics of Pan/Tilt/Zoom camera as claimed in claim 2 system in place, it is characterized in that, also comprise management server, with described Operation and Maintenance platform communication connection and described pre-procesor, be used for receiving user's instruction and user instruction is distributed to described pre-procesor and process.

4. the instantaneous optics of Pan/Tilt/Zoom camera as claimed in claim 3 system in place is characterized in that, also comprises:

Video acquisition module is connected with described wide-angle imaging machine and Pan/Tilt/Zoom camera, is used for obtaining the video of wide-angle imaging machine and Pan/Tilt/Zoom camera shooting;

Image processing module with described video acquisition module and the communication connection of described coordinate mapping module, is used for the optical distortion that camera lens causes is corrected; And

The RS232/R485 conversion equipment with described PTZ motion-control module and Pan/Tilt/Zoom camera communication connection, is used for that the movement instruction that the PTZ motion-control module generates is sent to Pan/Tilt/Zoom camera Pan/Tilt/Zoom camera is adjusted accordingly.

5. the instantaneous optics installation method of Pan/Tilt/Zoom camera is characterized in that, comprises step:

1) interested destination object intercepts or clicks in the photographic images of user to the wide-angle imaging machine;

2) setting up the coordinate relationship map between wide-angle imaging machine and Pan/Tilt/Zoom camera and according to length and length and length and length and the wide multiplication factor of determining Pan/Tilt/Zoom camera of target in wide-angle imaging machine picture wide, that needs amplify wide, wide-angle imaging machine full width picture wide, the Pan/Tilt/Zoom camera imageing sensor of the focal length of wide-angle imaging machine, wide-angle imaging machine imageing sensor, the multiplication factor of described Pan/Tilt/Zoom camera is definite according to following formula according to user instruction:

f _PTZ＝min{α _w，α _h}·f _WAC

Wherein, min{ α _w, α _hBe illustrated in α _wAnd α _hMiddle selected value is less, and

${\mathrm{\α}}_w=\frac{w_{\mathrm{wac}}}{w_{t\arg \mathrm{et}}}\·\frac{{\mathrm{sw}}_{\mathrm{ptz}}}{{\mathrm{sw}}_{\mathrm{wac}}};$ ${\mathrm{\α}}_h=\frac{h_{\mathrm{wac}}}{h_{t\arg \mathrm{et}}}\·\frac{{\mathrm{sh}}_{\mathrm{ptz}}}{{\mathrm{sh}}_{\mathrm{wac}}}$

f _WACThe focal length of wide-angle imaging machine, sw _WacAnd sh _WacRespectively the length of wide-angle imaging machine imageing sensor and wide, sw _PtzAnd sh _PtzRespectively the length of Pan/Tilt/Zoom camera imageing sensor and wide, w _WacAnd h _WacRespectively the length of wide-angle imaging machine full width picture and wide, w _TargetAnd h _TargetRespectively length in wide-angle imaging machine picture of the target of need amplifying and wide, f _PTZIt is the focal length of Pan/Tilt/Zoom camera; And

3) generate corresponding movement instruction according to the coordinate relationship map and the multiplication factor that produce, the place-centric of the picture centrally aligned destination object of control Pan/Tilt/Zoom camera.

6. the instantaneous optics installation method of Pan/Tilt/Zoom camera as claimed in claim 5 is characterized in that described step 1) is finished with mouse at the Operation and Maintenance platform by the user; Described step 2) finished by coordinate mapping module in the pre-procesor; Described step 3) is finished by PTZ motion-control module in the pre-procesor.

7. the instantaneous optics installation method of Pan/Tilt/Zoom camera as claimed in claim 5 is characterized in that, also comprises the step that the optical distortion that camera lens caused by image processing module in the pre-procesor is corrected.

8. the instantaneous optics installation method of Pan/Tilt/Zoom camera as claimed in claim 7 is characterized in that, also comprises by management server receiving user's instruction and user instruction being distributed to the step that described pre-procesor is processed.

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