CN103731636A - Method for tracking target through WI-FI and video monitoring device - Google Patents
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Abstract
The invention provides a method for tracking a target through WI-FI and a video monitoring device. The method is based on a video spatial database and includes the following steps that firstly, a hotspot AP connected with an IP address through the WI-FI within networking time is determined through the IP address of the target and the networking time, and positional information of the target is calculated according to the position of the hotspot AP; secondly, according to the positional information of the target and the networking time corresponding to the positional information, the video spatial database is searched for coherent video data of the target or a target possessor; thirdly, peripheral video monitoring is associated, the coherent video data are found, and the moving trajectory of the target or the target possessor is tracked. The invention further provides a known MAC address tracking method. According to the method for tracking the target and the known MAC address tracking method, a WI-FI network and the video monitoring device can be combined to track criminal suspects who execute cyber crimes or steal a mobile device.
Description
Technical field
The present invention relates to location and tracking field, relate in particular to a kind of method that WI-FI of utilization and video monitoring equipment are followed the trail of target.
Background technology
Along with WI-FI location technology is day by day accurate, video monitoring equipment also spreads all over each corner of avenue simultaneously, but lacks effective interaction mechanism between the two, especially in the location to moving target and tracking field.
The video database technology based on space of rising is in the recent period by the geographical coordinate of city video monitoring data is set up.As Chinese patent application CN201310105427.3, the applying date is on 03 28th, 2013, and name is called a kind of many videos associated monitoring positioner and method based on spatial information; And for example Chinese patent application 201310071391.1, the applying date is on 03 06th, 2013, name is called a kind of space-location method based on video analysis.
The development of the above-mentioned video database technology based on space, for WI-FI location and the combination of video monitoring equipment provide new development opportunity, contribute to following spatial pursuit and identity of carrying out based on " WI-FI network+video monitoring equipment " for suspect to screen.
Summary of the invention
In view of this, the invention provides a kind of method that WI-FI of utilization and video monitoring equipment are followed the trail of target, based on sdi video database, can rationally utilize existing watch-dog and positioning equipment, suspect is followed the trail of.
The method that the WI-FI of utilization of the present invention and video monitoring equipment are followed the trail of target, comprise the steps: that (1) is by IP address and the networking time of described target, determine the focus AP that described IP address connects by WI-FI within the described networking time, and according to the positional information of target described in the position calculation of described focus AP; (2) according to the positional information of described target and corresponding networking time thereof, search described sdi video database, obtain described target or target holder's coherent video data; (3) associated periphery video monitoring, searches for described coherent video data, and its motion track is followed the trail of.
A kind of method that the present invention also provides WI-FI of utilization and video monitoring equipment to follow the trail of target, comprise the steps: that (1) is by the MAC Address of described target, determine focus AP and networking time that its WI-FI connects, and according to the positional information of target described in the position calculation of described focus AP; (2) according to the positional information of described target and corresponding networking time thereof, search described sdi video database, obtain described target or target holder's coherent video data; (3) associated periphery video monitoring, searches for described coherent video data, and its motion track is followed the trail of.
Preferably, described sdi video database by the city video monitoring equipment of police, public security system networking, by community or street, be in charge of can with its geographical position one to one video monitoring equipment provide.
Preferably, by described video monitoring equipment coordinatograph, determine the exact position of each video monitoring equipment, set up the database of store video watch-dog positional information, and take video monitoring equipment as initial point, supervision radius is coordinate, form location coordinate, to video automatic search.
Preferably, the location of the hand-hold type video camera with positioning function is combined with camera function, for every section of video or photo point of addition information, as a part for described sdi video database.
Preferably, the priority orders of described search is followed successively by: video monitoring equipment that city video monitoring equipment, community or street are in charge of, have the hand-hold type video camera of positioning function, and at higher priority place, obtain after relevant information, do not visit again the video monitoring equipment/video camera of lower priority.
Method for tracing of the present invention, can make WI-FI network be combined with video monitoring equipment, and the suspect who implements the network crime or theft mobile device is carried out to the tracking in composite space.
Accompanying drawing explanation
Fig. 1 is the method flow diagram that utilizes WI-FI and video monitoring equipment to follow the trail of target in the present invention.
Fig. 2 is another flow chart that utilizes the method that WI-FI and video monitoring equipment follow the trail of target in the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage more clear, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Sdi video database
Realization of the present invention is the geographical coordinate based on realizing city video monitoring data, and sets up sdi video database.
This sdi video database, can be by the city video monitoring equipment of police, public security system networking, Huo You community or street be in charge of can with its geographical position one to one video monitoring equipment provide.Its best mode is as described in following patent:
As patent CN201310071391.1, a kind of space-location method based on video analysis, comprise: by supervision of the cities device coordinate, determine the exact position of each watch-dog, set up the database of watch-dog position storage, and take watch-dog as initial point, supervision radius is coordinate, form location coordinate, to video automatic search.
And for example patent CN201310105427.3, a kind of space-location method based on video analysis, comprising: by supervision of the cities device coordinate, determine the exact position of each watch-dog; The location of hand-hold type video camera is combined with camera function, for every section of video or photo point of addition information, and when carrying out video image search, except the information search that watch-dog is taken, also video or photo containing this positional information are retrieved in the lump.
Embodiment 1
Refer to Fig. 1, be depicted as the schematic flow sheet that utilizes the method that WI-FI and video monitoring equipment follow the trail of network crime target.Conventionally for the network crime, can find by the website of its attack or eavesdropping etc. IP address and the networking time of target, its method for tracing comprises the steps:
In step S101, by IP address and the networking time of target, determine the focus AP that described IP address connects by WI-FI within the described networking time, and according to the positional information of target described in the position calculation of described focus AP;
In the present embodiment, focus AP comprises the focus AP that public place provides, and such as the hinge of the traffic transfers such as airport, railway station, passenger station, also comprises the focus AP being provided by businessman, as service locations such as coffee shop, fast food restaurant, hotel, markets, also comprise the focus AP compared with privatization.
Wherein, when search, the preferential fixing focus AP of chosen position, such as public place or businessman, is secondly the movably focus AP with positioning function.This focus AP wants to preserve and to inquire about connected MAC Address and networking time, also wants to provide the geographical position of self.
In the present embodiment, if described target only connects a focus AP, according to the power of signal, form a scope take AP as the center of circle, such as, if signal is three lattice, this scope is 5 meters, if signal is lattice, this scope is 15 meters.
If target connects three and above focus AP, can calculate accurately according to the principle of WI-FI location, and the focus AP connecting is more, positional information calculation is more accurate.
In step S102, according to the positional information of described target and corresponding networking time thereof, search described sdi video database, obtain described target or target holder's coherent video data;
In the present embodiment, target or target holder being searched, is because more disguised the network crime have, and therefore, need to, in conjunction with the type of the network crime, target or target holder be selected.
In step S103, associated periphery video monitoring, searches for described coherent video data, and its motion track is followed the trail of.
In the present embodiment, associated periphery video monitoring equipment, refers to according to the location and time point of target networking, and its shiftable haulage line and time point are everywhere estimated; Then the video monitoring equipment of in space video database, city video monitoring equipment, community or street in this circuit being in charge of, the hand-hold type video camera with positioning function are searched for according to the time point of estimation one by one.
The priority orders of search is followed successively by: video monitoring equipment that city video monitoring equipment, community or street are in charge of, have the hand-hold type video camera of positioning function, and after higher priority place acquired information, do not visit again the video monitoring equipment/video camera of lower priority.When effectively following the trail of, as much as possible citizen's privacy is protected.
Embodiment 2
The method of utilizing WI-FI and video monitoring equipment to follow the trail of the target of theft communication equipment, for stolen person, can find MAC Address by the voucher of purchase etc. conventionally, and its method for tracing specifically comprises:
In step S201, by the MAC Address of described target, determine and carry out with described target focus AP and the networking time that WI-FI is connected, and according to the positional information of the position calculation target of described focus AP;
In the present embodiment, focus AP comprises the focus AP that public place provides, and such as the hinge of the traffic transfers such as airport, railway station, passenger station, also comprises the focus AP being provided by businessman, as service locations such as coffee shop, fast food restaurant, hotel, markets, also comprise the focus AP compared with privatization.
Wherein, when search, the preferential fixing focus AP of chosen position, such as public place or businessman, is secondly the movably focus AP with positioning function.This focus AP wants to preserve and to inquire about connected MAC Address and networking time, also wants to provide the geographical position of self.
In the present embodiment, if described target only connects a focus AP, according to the power of signal, form a scope take this focus AP as the center of circle, such as, if signal is three lattice, this scope is 5 meters, if signal is lattice, this scope is 15 meters.
If target connects three and above focus AP, can calculate accurately according to the principle of WI-FI location, and the focus AP connecting is more, the positional information calculation of target is more accurate.
In step S202, according to the positional information of described target and corresponding networking time thereof, search described sdi video database, obtain described target or target holder's coherent video data;
In the present embodiment, for burglary, should know where stolen target is come, also to know that who steals, and how dispose of stolen goods after theft, therefore, for the holder of target or target, or even interim holder, can search for, to obtaining more detection clue.
In step S203, associated periphery video monitoring, search coherent video data, and described target or target holder's motion track is followed the trail of.
Therefore, can be by a stolen communication equipment is followed the trail of, and then smash up theft gang, even track the interests chain of selling from stealing to.
The present invention is mainly based on following basic principle and current techique: wireless Internet access person's device mac address and the IP address of networking period thereof are at Virtual network operator place reservation record.
1 for mobile network crime, the police grasp this criminal's evidence of crime and its networking IP address of this period, by the extraction to this IP address utilization record in Virtual network operator management database system, and then the focus AP position when obtaining it and using this IP address, and then further lock its real position.
2 for mobile device theft, and the police are by grasping its MAC Address, record in inquiry operator dic database, obtain this address at a time between the position of the focus AP of online in scope, thereby the further real position of lock onto target;
The lock onto target crowd of institute in 3 pairs of WI-FI positioning precisioies screens in monitoring video, further finds suspect, depends on multipoint video comparison, criminal profiling, the multiple criminal investigation means of habitual offender's database.
Owing to positioning by video monitoring, have the advantages that accuracy is high, be difficult for obscuring.And locate and can more and more easily realize along with the universal of wireless network by WI-FI, and be not subject to blocking of building etc., more accurate.The present invention is the combination of the two just, for the crime of the types such as the network crime or the theft to communication equipment, has more specific aim.
Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection range that all should belong to the claims in the present invention with distortion.
Claims (6)
1. a method of utilizing WI-FI and video monitoring equipment to follow the trail of target, based on sdi video database, is characterized in that, comprises the steps:
(1) by IP address and the networking time of described target, determine the focus AP that described IP address connects by WI-FI within the described networking time, and according to the positional information of target described in the position calculation of described focus AP;
(2) according to the positional information of described target and corresponding networking time thereof, search described sdi video database, obtain described target or target holder's coherent video data;
(3) associated periphery video monitoring, searches for described coherent video data, and described target or target holder's motion track is followed the trail of.
2. a method of utilizing WI-FI and video monitoring equipment to follow the trail of target, based on sdi video database, is characterized in that, comprises the steps:
(1) by the MAC Address of described target, determine focus AP and networking time that its WI-FI connects, and according to the positional information of target described in the position calculation of described focus AP;
(2) according to the positional information of described target and corresponding networking time thereof, search described sdi video database, obtain described target or target holder's coherent video data;
(3) associated periphery video monitoring, searches for described coherent video data, and described target or target holder's motion track is followed the trail of.
3. the method that the WI-FI of utilization as claimed in claim 1 or 2 and video monitoring equipment are followed the trail of target, it is characterized in that, described sdi video database by the city video monitoring equipment of police, public security system networking, by community or street, be in charge of can with its geographical position one to one video monitoring equipment provide.
4. the method that the WI-FI of utilization as claimed in claim 3 and video monitoring equipment are followed the trail of target, it is characterized in that, by described video monitoring equipment coordinatograph, determine the exact position of each video monitoring equipment, set up the database of store video watch-dog positional information, and take video monitoring equipment as initial point, supervision radius is coordinate, form location coordinate, to video automatic search.
5. the method that the WI-FI of utilization as claimed in claim 4 and video monitoring equipment are followed the trail of target, it is characterized in that, the location of the hand-hold type video camera with positioning function is combined with camera function, for every section of video or photo point of addition information, as a part for described sdi video database.
6. the method that the WI-FI of utilization as claimed in claim 5 and video monitoring equipment are followed the trail of target, it is characterized in that, the priority orders of described search is followed successively by: video monitoring equipment that city video monitoring equipment, community or street are in charge of, have the hand-hold type video camera of positioning function, and at higher priority place, obtain after relevant information, do not visit again the video monitoring equipment/video camera of lower priority.
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