CN105516653A - Security and protection monitoring system - Google Patents
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- CN105516653A CN105516653A CN201510831625.7A CN201510831625A CN105516653A CN 105516653 A CN105516653 A CN 105516653A CN 201510831625 A CN201510831625 A CN 201510831625A CN 105516653 A CN105516653 A CN 105516653A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
- G08B13/19602—Image analysis to detect motion of the intruder, e.g. by frame subtraction
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Abstract
Provided in the invention is a security and protection monitoring system comprising a two-dimensional image collection module (001), a two-dimensional displacement sensor collection module (002), and an image analysis module (003). The two-dimensional image collection module (001) is used for obtaining two-dimensional image information under a monitored scene; the two-dimensional displacement sensor collection module (002) is used for obtaining two-dimensional image information under a monitored scene; and the image analysis module (003) is used for receiving the two-dimensional image information and the three-dimensional image information, comparing the two-dimensional image information and the three-dimensional image information with normal image information of a preset monitored scene and analyzing the information, and determining whether the monitored scene is normal by a preset threshold value. According to the invention, the two-dimensional laser displacement sensor module is used for obtaining the three-dimensional image information, so that the accuracy of the monitoring and the environment adaptive capability are improved; and on the basis of the fusion analysis processing of the two-dimensional image and the three-dimensional image, whether the monitored scene is abnormal is determined, thereby reducing the system complexity.
Description
Technical field
The present invention relates to the integrated circuit (IC) design technical field in microelectronic, particularly a kind of safety defense monitoring system.
Background technology
Safety defense monitoring system is application optical fiber, coaxial cable or microwave transmission video signal in its closed loop, and display and record form the system of independent completion from shooting to image.It can in real time, image, reflect monitored object truly, it can replace manually monitoring for a long time under rugged environment, is recorded by video tape recorder.Warning system equipment is reported to the police to illegal invasion simultaneously.
In prior art, safety defense monitoring system mainly gathers two-dimensional video image, carries out abnormality detection and warning in conjunction with complicated image processing algorithm.Due to the identification of two dimensional image and testing result larger by the impact of environment, had a strong impact on accuracy and the performance of supervisory control system; Even if more perfect system, need to rely on high performance processor to carry out complicated image processing algorithm, greatly add the cost of supervisory control system.
Summary of the invention
The object of the invention is the defect for prior art, a kind of safety defense monitoring system is provided, this safety defense monitoring system adopts two-dimensional laser displacement transducer, it can obtain the accurate three dimensions point cloud information of a part in scene, while the accuracy improving supervisory control system and adaptive capacity to environment, also reduce complexity and the equipment cost of system, also propose the flexibility of system simultaneously.
The invention provides a kind of safety defense monitoring system, this system comprises two dimensional image acquisition module, two-dimension displacement sensor acquisition module and image analysis module; Wherein, two dimensional image acquisition module, for obtaining the two-dimensional image information under monitored scene, and sends to described image analysis module by two-dimensional image information; Two-dimension displacement sensor acquisition module, for obtaining the three-dimensional image information of specific region under monitored scene, and sends to described image analysis module by three-dimensional image information; Image analysis module, for receiver, video image information, video image information comprises two-dimensional image information and described three-dimensional image information, and the normal picture information of video image information and default monitored scene is carried out com-parison and analysis, judges that whether monitored scene is abnormal by predetermined threshold value.
Preferably, this system also comprises memory module, alarm module and display module; Wherein, memory module, for the described video image information of the monitored scene of real-time storage, and stores the normal picture information of the monitored scene preset; Alarm module, for receiving the instruction of described image analysis module by the time interval of presetting, and send warning message by warning device, warning device comprises warning lamp, warning horn; Display module, for providing the operation interface of system, and shows the video image information of memory module storage.
Preferably, judge that monitored scene is whether abnormal by predetermined threshold value to comprise particularly: when the difference of described video image information and described normal picture information is less than threshold value, be judged as that monitored scene is normal, and transmission stores the instruction of described video image information to described memory module; When the difference of described video image information and described normal picture information is more than or equal to threshold value, be judged as that monitored scene is abnormal; And trigger described alarm module, the abnormal image of key frame is marked simultaneously, and build the video index information of monitored scene exception, send the instruction of the described mark of storage and described video index information to described memory module simultaneously.
Preferably, the instruction that alarm module receives described image analysis module by the time interval of presetting specifically comprises: when described alarm module does not receive the instruction of described image analysis module within the time interval of presetting, by automatic trigger alarm device, on described display module, show lost contact information simultaneously.
Preferably, two-dimension displacement sensor acquisition module comprises at least one two-dimension displacement sensor, and two-dimension displacement sensor collection comprises laser line generator, image acquisition device and microprocessor; Wherein, described laser line generator, for receiving the driving instruction of described microprocessor, project an optical plane to three dimensions, described optical plane is modulated into a striation through testee; Described image acquisition device, for gathering described striation, Real-time Obtaining optical strip image; Described microprocessor, for launching driving instruction to described laser line generator, and processes described optical strip image, and completes the calculating of measured point three-dimensional depth information.
Two-dimensional laser displacement transducer also comprises video camera, and described two-dimensional laser displacement transducer must obtain the relative position relation of video camera and described laser line generator before use.
Preferably, image analysis module comprises: described two-dimensional image information is carried out first with the normal two-dimensional image information of monitored scene preset and compares, when the first comparative result is less than default Second Threshold, show that monitored scene is normal; Now do not need to carry out described three-dimensional image information to compare with the normal three-dimensional image information of monitored scene second preset; Or
When the first comparative result is more than or equal to Second Threshold, show the doubtful exception of monitored scene; Now continue that described three-dimensional image information is carried out second with the normal three-dimensional image information of monitored scene preset to compare, when the second comparative result is less than the 3rd threshold value, show that monitored scene is normal; When the second comparative result is more than or equal to the 3rd threshold value, show that monitored scene is abnormal.
System of the present invention obtains three-dimensional image information by utilizing two-dimensional laser displacement transducer, improves the accuracy of supervisory control system and the adaptive capacity to environment; And by two dimensional image and the process of 3-D view convergence analysis, judge that whether monitored scene abnormal, reduce the complexity of system.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
A kind of safety defense monitoring system schematic diagram that Fig. 1 provides for the embodiment of the present invention;
The Mathematical Modeling schematic diagram of a kind of two-dimensional laser displacement transducer that Fig. 2 provides for the embodiment of the present invention;
A kind of graphical analysis schematic flow sheet that Fig. 3 provides for the embodiment of the present invention;
Another graphical analysis schematic flow sheet that Fig. 4 provides for the embodiment of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.
A kind of safety defense monitoring system schematic diagram that Fig. 1 provides for the embodiment of the present invention.As shown in Figure 1, as shown in the figure, this system comprises two dimensional image acquisition module 001, two-dimension displacement sensor acquisition module 002 and image analysis module 003, memory module 004, alarm module 005 and display module 006.
Particularly, two dimensional image acquisition module 001, for obtaining the two-dimensional image information under monitored scene, and sends to described image analysis module 003 by two-dimensional image information; Two-dimensional laser displacement transducer acquisition module 002, for obtaining the three-dimensional image information of specific region under monitored scene, and sends to described image analysis module 003 by three-dimensional image information; Described image analysis module 003, for receiver, video image information, described video image information comprises two-dimensional image information and described three-dimensional image information, and the normal picture information of video image information and default monitored scene is carried out com-parison and analysis, judge that whether monitored scene is abnormal by predetermined threshold value.
Memory module 004, for the described video image information of the monitored scene of real-time storage, and stores the normal picture information of the monitored scene preset; Alarm module 005, for receiving the instruction of described image analysis module by the time interval of presetting, and send warning message by warning device, warning device comprises warning lamp, warning horn; Display module 006, for providing the operation interface of described system, and shows the video image information of memory module 004 storage.
Particularly, judge that monitored scene is whether abnormal by predetermined threshold value to comprise particularly: when the difference of described video image information and described normal picture information is less than threshold value, be judged as that monitored scene is normal, and transmission stores the instruction of described video image information to described memory module 004; When the difference of described video image information and described normal picture information is more than or equal to threshold value, be judged as that monitored scene is abnormal; And trigger described alarm module 005, the abnormal image of key frame is marked simultaneously, and build the video index information of monitored scene exception, send the instruction of the described mark of storage and described video index information to described memory module 004 simultaneously.
Particularly, two-dimension displacement sensor acquisition module 002 comprises at least one two-dimension displacement sensor, and described two-dimension displacement sensor collection comprises laser line generator, image acquisition device and microprocessor; Wherein, described laser line generator, for receiving the driving instruction of described microprocessor, project an optical plane to three dimensions, described optical plane is modulated into a striation through testee; Described image acquisition device, for gathering described striation, Real-time Obtaining optical strip image; Described microprocessor, for sending driving instruction to described laser line generator, and processes described optical strip image.
Two-dimensional laser displacement transducer also comprises video camera, and described two-dimensional laser displacement transducer must obtain the relative position relation of video camera and described laser line generator before use.
The Mathematical Modeling schematic diagram of a kind of two-dimensional laser displacement transducer that Fig. 2 provides for the embodiment of the present invention.As shown in Figure 2, as shown in the figure, camera coordinate system in figure: O
cx
cy
cz
c; Plane of delineation coordinate system: ouv.A and B is three-dimensional 2 points, and the corresponding spatial point A and B of a and b is to the imaging point of the plane of delineation.The plane of delineation is the imaging plane at video camera.Their three-dimensional coordinates under camera coordinate system of A and B are A (X
a, Y
a, Z
a) and B (X
b, Y
b, Z
b).A and B on the optical plane of laser line generator, they corresponding on the image plane 2 for pixel coordinate be a (u
a, v
a) and b (u
b, v
b); Physical coordinates is a (x
a, y
a) and b (x
b, y
b).
It should be noted that, relative position relation between video camera and laser line generator is the system structure parameter of two-dimension displacement sensor, these structural parameters can design according to application scenarios, decide measuring range and the precision of whole two-dimension displacement measuring system.Other relevant decisive parameters also have laser line generator to project the quality of striation, video camera relevant parameter.Two-dimensional laser displacement transducer is different according to its purposes, and structural parameters are also different, finally causes the difference of the measuring range of transducer and resolution etc.
Now using camera coordinate system as the reference coordinate of whole system, the relative position relation of laser line generator and video camera can with following space plane the Representation Equation: aX+bY+cZ=d; Choose spatial point A to be described, the three-dimensional coordinate of spatial point A under camera coordinate system is: (X
a, Y
a, Z
a), therefore have following constraint equation: aX
a+ bY
b+ cZ
b=d (1).
The two-dimensional coordinate of video camera imaging point under plane of delineation coordinate system that spatial point A is corresponding is: a (u
a, v
a); Pixel coordinate (u
a, v
a) according to video camera relevant parameter, physical coordinates (x can be converted to
a, y
a).Concrete relevant parameter has image CCD size, camera lens distortion factor and the alignment error between them.
According to pin-hole imaging model, image coordinate with the corresponding relation of space coordinates is
Wherein, (x, y) is image coordinate, (X
c, Y
c, Z
c) be the three dimensional space coordinate under camera coordinate system, f is focal length of camera.
After obtaining optical strip image, the pixel (u of optical losses can be obtained by image processing techniques
a, v
a), and then be converted to physical coordinates (x
a, y
a).By (x
a, y
a) substitute into above formula equation group (2), then have:
(3) a space ray o is represented
ca; Spatial point A is ray o
cthe intersection point of A and laser line generator optical plane.Solve (1) (3) and the three-dimensional coordinate (X of spatial point A under camera coordinate system can be obtained
a, Y
a, Z
a).
The microprocessor driven line laser projector of two-dimensional laser displacement transducer projects an optical plane to three dimensions, obtains a striation through the modulation of three dimensions testee; If testee is a plane, then optical plane is modulated into a continuous print striation, otherwise is modulated into some the striations be interrupted.Laser line generator can adopt the invisible lights such as infrared light, then these invisible light striations can utilize the collected by camera of corresponding light frequency range to arrive; Then, microprocessor system drives image acquisition device to gather striation, Real-time Obtaining optical strip image; Microprocessor system uses image processing techniques to process to the optical strip image obtained, and extracts the centre coordinate of optical strip image; Finally, the optical strip image centre coordinate extracted is brought into the Mathematical Modeling of two-dimensional laser displacement transducer system, the three dimensional space coordinate of the three dimensions point corresponding to optical losses point can be reconstructed, and then collect three-dimensional image information.
As shown in Figure 3, a kind of graphical analysis schematic flow sheet of providing for the embodiment of the present invention of Fig. 3.Two dimensional image and 3-D view combine to carry out the process of graphical analysis in the present embodiment; Graphical analysis flow chart comprises step S401-S404:
Step S401: monitored scene video IMAQ, video image comprises two dimensional image and 3-D view;
Two dimensional image acquisition module gathers two dimensional image; Two-dimension displacement sensor acquisition module gathers 3-D view, namely depth image; Video image is Real-time Collection, and is contrasted by the normal picture of the video image of Real-time Collection with the monitored environment prestored.
The feature that two-dimensional laser displacement transducer gathers three-dimensional image information is for some key area, gathers.Because the restriction of laser line generator projected area, relative to two dimensional image collector, two-dimensional laser displacement transducer can only gather the depth information of specific region.The depth information on ad-hoc location can only be monitored due to two-dimension displacement sensor fixed position, for the scene of comprehensive scene monitoring, more region can being covered by configuring multiple displacement transducer, also can obtain the depth information in other regions by rotating two-dimension displacement sensor.
It should be noted that, the normal picture of monitored environment i.e. reference picture.The difference that reference picture contrasts with the video image monitored in real time, this difference has a scope allowed.In graphical analysis experimentation repeatedly, monitored environmental abnormality and normal between have a critical value; Different monitored environment has different critical values.That is, different monitored environment has different difference allowed bands.
The monitored environment strict to monitoring requirement, the historical relic monitoring, safety cabinet etc. in such as museum, can arrange lower critical value, once there be small exception, send information warning immediately.The monitored environment lower to monitoring requirement, can be set to higher critical value.
Step S402: judge that whether monitoring scene is abnormal by predetermined threshold value;
The image of real-time monitoring and the difference value of reference picture, compare difference value and predetermined threshold value.And within the time interval of presetting, the result compared is sent to alarm module.Result relatively comprises, and is more than or equal to threshold value, is less than threshold value; Be more than or equal to threshold value, show monitored environmental abnormality, than extremely swarming into if any people, the position of historical relic changes.Be less than threshold value, show that monitored environment is normal.So this time interval sets according to the demand of the applied environment of supervisory control system and user oneself.
Particularly, the instruction that alarm module 005 receives image analysis module by the time interval of presetting specifically comprises: when alarm module 005 does not receive the instruction of image analysis module within the time interval of presetting, by automatic trigger alarm device, on described display module 006, show lost contact information simultaneously.
Image analysis module can in the time interval of presetting by the result of com-parison and analysis, and namely command information sends to alarm module 005.When within the time interval of presetting, if alarm module 005 does not receive command information, monitored environmental abnormality is described, such as: someone cuts short circuit, power-off etc., by automatic trigger alarm device.
Step S403: monitored scene is normal, preserves video;
When difference value is less than threshold value, illustrate that monitored scene is normal, the video image information that memory module 004 meeting autostore is monitored in real time.
Step S404: trigger alarm device, marks key frame, builds video index while preservation video image.
When difference value is more than or equal to threshold value, monitored environmental abnormality is described.Now image analysis module can send command information to alarm module, alarm module trigger alarm device.Now memory module meeting store video images information, image analysis module can mark the image of key frame, and builds video index, so that later stage video compression and investigation and evidence collection.
When supervisory control system is used for office's Windows and door CAD, safety-protection system can be arranged on the main-inlet of office, laser line generator projection striation, to gate or window, once monitor door or window is opened, gets final product trigger alarm device, and marks anomalous video frame.
When supervisory control system is used for historical relic monitoring, safety-protection system can be arranged on deposit historical relic space inside, laser line generator projection striation, to historical relic, once monitoring historical relic is abnormal, gets final product trigger alarm device, and marks anomalous video frame.
Another graphical analysis schematic flow sheet that Fig. 4 provides for the embodiment of the present invention.As shown in the figure, step S401-S406 is comprised:
Step S401: described two-dimensional image information and the normal two-dimensional image information of monitored scene preset are compared;
Two dimensional image acquisition module, collection be the texture image of whole monitored environment; The collection of two-dimensional laser displacement transducer be the depth image of monitored environment.In the process of video image acquisition, two dimensional image and 3-D view are chosen respectively scene image under normal circumstances as reference image.When comparing, two-dimensional image information and the scene two-dimensional image information under normal circumstances preset of first monitoring relatively in real time.
Step S402: whether be less than Second Threshold;
In embodiments of the present invention, Second Threshold is preset; Because the two dimensional image gathered has the wide feature in the region of collection, is all standing of monitored scene substantially.
That is, if two dimensional image does not change, then monitoring scene is necessarily normal; If two dimensional image changes, then the doubtful exception of scene, because be likely the disturbance because environment normal variation causes, such as: the light and shade change of indoor environment such as illumination, outdoor environment is natural daylight such as, blows.The three-dimensional image information and the default scene three-dimensional image information under normal circumstances that now need to carry out monitoring in real time compare.
Therefore, Second Threshold is through the value after test of many times.The comparative result of two-dimensional image information and the normal two-dimensional image information of monitored scene and Second Threshold are compared.
Step S403: described three-dimensional image information and the normal three-dimensional image information of monitored scene preset are compared;
When the comparative result of step S402 is for being not less than Second Threshold, when being namely more than or equal to Second Threshold, so illustrate that two-dimensional image information shows doubtful exception.But because two-dimensional image information is texture information, flutter the detailed information of catching less than monitored scene, so time do not represent exception.Now, the depth information to the three-dimensional image information of the doubtful abnormal area of monitored scene presents is needed to judge.
It should be noted that, if two dimensional image exceeds Second Threshold after relatively, being likely abnormal, is likely the interference of environment; Do not exceed Second Threshold, then certain normal.
Step S404: monitored scene is normal
When the comparative result of step S402 is for being less than Second Threshold, illustrates that two-dimensional image information display is normal, now not needing the judgement carrying out three-dimensional image information again, and then save time.
Step S405: whether be less than the 3rd threshold value;
To arrange reason identical with the threshold value of step S402, do not repeat them here.
If the not change of three-dimensional image information, then represent that monitored scape specific region spatial variations does not occur, can think that monitored scene is not abnormal.
Step S406: monitored scene is abnormal;
When three-dimensional image information and the normal three-dimensional image information of monitored scene compare, comparative result is not less than the 3rd threshold value, is namely more than or equal to the 3rd threshold value.Explanation utilizes three dimensional depth image also to judge monitored scene exception, therefore monitored scene is abnormal.
Step S404: monitored scene is normal.
Judge that structure is yes as step S405, when being namely less than the 3rd threshold value, monitored scene is normal.Now show, two-dimensional image information does not judge that monitored environment has problem; Three-dimensional image information is judged also no problem.
It should be noted that, for the configuration mode that multiple two-dimension displacement sensor covers, can know that doubtful exception appears in which region of monitoring scene by two dimensional image process, then compare this area three-dimensional image, exceed threshold value then abnormal, then abnormal.
Configuration mode for single two-dimension displacement sensor: pass through Electric Machine Control, two-dimension displacement sensor is rotated to two dimensional image to change corresponding region, after obtaining the depth information in this region, depth information with this region of preserving before compares, and is more than or equal to the 3rd threshold value then abnormal.Certainly, in this case, before the use, two-dimension displacement sensor must be rotated one week, obtain the 3-D view of whole monitoring scene.
System of the present invention obtains three-dimensional image information by utilizing two-dimensional laser displacement transducer, improves the accuracy of supervisory control system and the adaptive capacity to environment; And by the convergence analysis process of two dimensional image and 3-D view, judge that whether monitored scene abnormal, reduce the complexity of system.
Professional should recognize further, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection range be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a safety defense monitoring system, is characterized in that, described system comprises two dimensional image acquisition module (001), two-dimensional laser displacement transducer acquisition module (002) and image analysis module (003); Wherein,
Described two dimensional image acquisition module (001), for obtaining the two-dimensional image information under monitored scene, and sends to described image analysis module (003) by described two-dimensional image information;
Described two-dimensional laser displacement transducer acquisition module (002), for obtaining the three-dimensional image information of specific region under monitored scene, and sends to described image analysis module (003) by described three-dimensional image information;
Described image analysis module (003), for receiver, video image information, described video image information comprises described two-dimensional image information and described three-dimensional image information, and the normal picture information of described video image information and default monitored scene is carried out com-parison and analysis, judge that whether monitored scene is abnormal by predetermined threshold value.
2. system according to claim 1, is characterized in that, described system also comprises memory module (004), alarm module (005) and display module (006); Wherein,
Described memory module (004), for the described video image information of the monitored scene of real-time storage, and stores the normal picture information of the monitored scene preset;
Described alarm module (005), for receiving the instruction of described image analysis module by the time interval of presetting, and send warning message by warning device, described warning device comprises warning lamp, warning horn;
Described display module (006), for providing the operation interface of described system, and shows the video image information that described memory module (004) stores.
3. system according to claim 2, is characterized in that, described image analysis module (003) comprising:
When the difference of described video image information and described normal picture information is less than first threshold, be judged as that monitored scene is normal, and send store described video image information instruction to described memory module (004);
When the difference of described video image information and described normal picture information is more than or equal to first threshold, be judged as that monitored scene is abnormal; And trigger described alarm module (005), the abnormal image of key frame is marked simultaneously, and build the video index information of monitored scene exception, send the instruction of the described mark of storage and described video index information to described memory module (004) simultaneously.
4. system according to claim 2, is characterized in that, the instruction that described alarm module (005) receives described image analysis module by the time interval of presetting specifically comprises:
When described alarm module (005) does not receive the instruction of described image analysis module within the time interval of presetting, by automatic trigger alarm device, simultaneously in described display module (006) upper display lost contact information.
5. system according to claim 1, described two-dimension displacement sensor acquisition module (002) comprises at least one two-dimension displacement sensor, it is characterized in that, described two-dimension displacement sensor collection comprises laser line generator, image acquisition device and microprocessor; Wherein,
Described laser line generator, for receiving the driving instruction of described microprocessor, project an optical plane to three dimensions, described optical plane is modulated into a striation through testee;
Described image acquisition device, for gathering described striation, Real-time Obtaining optical strip image;
Described microprocessor, for launching driving instruction to described laser line generator, and processes described optical strip image, and completes the calculating of measured point three-dimensional depth information.
6. system according to claim 5, is characterized in that, described two-dimensional laser displacement transducer also comprises video camera, and described two-dimensional laser displacement transducer must determine the relative position relation of video camera and described laser line generator before use.
7. system according to claim 2, is characterized in that, described image analysis module (003) comprising:
Described two-dimensional image information is carried out first with the normal two-dimensional image information of monitored scene preset compare, when the first comparative result is less than default Second Threshold, show that monitored scene is normal; Now do not need to carry out described three-dimensional image information to compare with the normal three-dimensional image information of monitored scene second preset; Or
When the first comparative result is more than or equal to Second Threshold, show the doubtful exception of monitored scene; Now continue that described three-dimensional image information is carried out second with the normal three-dimensional image information of monitored scene preset to compare, when the second comparative result is less than the 3rd threshold value, show that monitored scene is normal; When the second comparative result is more than or equal to the 3rd threshold value, show that monitored scene is abnormal.
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| CN108986367A (en) * | 2018-08-01 | 2018-12-11 | 南京乐展文化产业有限公司 | A kind of method of museum's showcase intelligent anti-theft |
| CN110008916A (en) * | 2019-04-11 | 2019-07-12 | 深圳云朵数据科技有限公司 | A kind of video image storage method, apparatus, equipment and storage medium |
| CN110927731A (en) * | 2019-11-15 | 2020-03-27 | 深圳市镭神智能系统有限公司 | Three-dimensional protection method, three-dimensional detection device and computer readable storage medium |
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