CN103731636A - Method for tracking target through WI-FI and video monitoring device - Google Patents

Abstract

The present invention provides a method for tracking a target using WI-FI and video surveillance equipment, based on the video space database, including the following steps: (1) Determine the target in the network through the IP address of the target and the network time The IP address is connected to the hotspot AP through WI-FI within a certain period of time, and the location information of the target is calculated according to the location of the hotspot AP; (2) According to the location information of the target and its corresponding networking time, search for the (3) Associate the surrounding video surveillance, search for the relevant image data, and track its movement trajectory. The invention also provides a tracking method for known MAC addresses. The tracking method of the present invention can combine the WI-FI network with the video surveillance equipment to track criminal suspects who commit network crimes or steal mobile equipment.

Description

Method for Tracking Targets Using WI-FI and Video Surveillance Equipment

technical field

The invention relates to the field of positioning and tracking, in particular to a method for tracking a target by using WI-FI and video surveillance equipment.

Background technique

As WI-FI positioning technology becomes more and more accurate, and video surveillance equipment is also spread in every corner of the city streets, there is a lack of effective interaction mechanism between the two, especially in the field of positioning and tracking of moving targets.

The recently emerging space-based video database technology is established through the geographic coordinates of urban video surveillance data. Such as Chinese patent application CN201310105427.3, the application date is March 28, 2013, and the name is a multi-video correlation monitoring and positioning device and method based on spatial information; another example is Chinese patent application 201310071391.1, the application date is March 6, 2013 , titled A Spatial Localization Method Based on Video Analysis.

The development of the above-mentioned space-based video database technology provides a new development opportunity for the combination of WI-FI positioning and video surveillance equipment, which will help in the future for criminal suspects in the space based on "WI-FI network + video surveillance equipment". Tracking and identification.

Contents of the invention

In view of this, the present invention provides a method for tracking targets using WI-FI and video monitoring equipment. Based on the video space database, existing monitoring equipment and positioning equipment can be reasonably used to track criminal suspects.

The method for tracking a target using WI-FI and video monitoring equipment of the present invention includes the following steps: (1) through the IP address and networking time of the target, determine that the IP address passes through WI within the networking time -Fi-connected hotspot AP, and calculate the location information of the target according to the location of the hotspot AP; (2) search the video space database according to the location information of the target and its corresponding networking time, and obtain the Relevant image data of the target or the target holder; (3) Associate surrounding video surveillance, search for the relevant image data, and track its movement trajectory.

The present invention also provides a method for tracking a target using WI-FI and video surveillance equipment, including the following steps: (1) Determine the hotspot AP and networking time of the WI-FI connection through the MAC address of the target , and calculate the location information of the target according to the location of the hotspot AP; (2) search the video space database according to the location information of the target and its corresponding networking time, and obtain the target or the target holder (3) Associate the surrounding video surveillance, search for the relevant image data, and track its movement trajectory.

Preferably, the video space database is provided by urban video surveillance equipment connected to the police and public security system, and video surveillance equipment managed by communities or streets that can correspond to their geographical locations one-to-one.

Preferably, the video surveillance equipment is coordinateized, the precise position of each video surveillance equipment is determined, a database for storing the location information of the video surveillance equipment is established, and the video surveillance equipment is used as the origin, and the monitoring radius is used as coordinates to form a positioning coordinate system, Automatically search for videos.

Preferably, the positioning of the hand-held camera with positioning function is combined with the camera function, and position information is added to each video or photo as a part of the video space database.

Preferably, the priority order of the search is as follows: city video surveillance equipment, video surveillance equipment in charge of residential areas or streets, handheld cameras with positioning functions, and after obtaining relevant information at a higher priority, no longer visit Lower priority video surveillance equipment/cameras.

The tracking method of the present invention can combine the WI-FI network with the video monitoring equipment to track the criminal suspect who commits network crime or steals the mobile device in the composite space.

Description of drawings

FIG. 1 is a flowchart of a method for tracking a target using WI-FI and video monitoring equipment in the present invention.

FIG. 2 is another flow chart of the method for tracking a target using WI-FI and video monitoring equipment in the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Video Spatial Database

The realization of the present invention is based on the geographic coordinateization of urban video surveillance data and the establishment of a video space database.

The video space database can be provided by urban video surveillance equipment connected to the police and public security system, or video surveillance equipment managed by communities or streets that can correspond to their geographical locations one-to-one. Its best mode is described in the following patents:

Such as patent CN201310071391.1, a spatial positioning method based on video analysis, including: coordinate the city monitoring equipment, determine the precise location of each monitoring equipment, establish a database for storing the location of the monitoring equipment, and use the monitoring equipment as the origin to monitor The radius is the coordinate, which constitutes the positioning coordinate system and automatically searches for the video.

Another example is patent CN201310105427.3, a spatial positioning method based on video analysis, including: coordinate the city monitoring equipment to determine the precise position of each monitoring equipment; Add location information to videos or photos, and when searching for video images, in addition to searching for information captured by surveillance equipment, videos or photos containing this location information are also retrieved.

Example 1

Please refer to FIG. 1 , which shows a schematic flowchart of a method for tracking cybercriminal targets using WI-FI and video surveillance equipment. Usually, for cybercrime, the IP address and network time of the target can be found through the website it attacks or eavesdrops on, etc. The tracking method includes the following steps:

In step S101, through the IP address of the target and the networking time, determine the hotspot AP whose IP address is connected through WI-FI within the networking time, and calculate the location information of the target according to the position of the hotspot AP;

In this embodiment, hotspot APs include hotspot APs provided in public places, such as airports, railway stations, passenger stations, and other transportation hubs, as well as hotspot APs provided by businesses, such as coffee shops, fast food restaurants, hotels, and shopping malls. and other service places, including more private hotspot APs.

Among them, when searching, a hotspot AP with a fixed location, such as a public place or a business, is preferred, followed by a mobile hotspot AP with a positioning function. That is, the hotspot AP should not only be able to store and query the MAC address and networking time connected to it, but also be able to provide its own geographic location.

In this embodiment, if the target is only connected to one hotspot AP, a range with the AP as the center is formed according to the strength of the signal. For example, if the signal is three grids, the range is 5 meters. If the signal is one grid, the range is 15 meters.

If the target is connected to three or more hotspot APs, accurate calculation can be performed according to the principle of WI-FI positioning, and the more hotspot APs are connected, the more accurate the position information calculation will be.

In step S102, according to the location information of the target and the corresponding networking time, search the video space database, and obtain the relevant image data of the target or the target holder;

In this embodiment, the search for the target or the target holder is because cybercrime is more concealed, therefore, it is necessary to select the target or the target holder in combination with the type of cybercrime.

In step S103, the surrounding video surveillance is associated, the relevant image data is searched, and its moving track is tracked.

In this embodiment, associating peripheral video monitoring equipment refers to estimating the moving route and the time points of various places according to the location and time point of the target network; and then monitoring the city video in the route in the spatial video database Devices, video surveillance equipment in charge of the community or street, and handheld cameras with positioning functions are searched according to the estimated time point.

The priority order of the search is as follows: urban video surveillance equipment, video surveillance equipment in charge of residential areas or streets, handheld cameras with positioning functions, and after obtaining information at a higher priority, no access to lower priority video Surveillance equipment/cameras. While effectively tracking, protect the privacy of citizens as much as possible.

Example 2

The method of using WI-FI and video surveillance equipment to track the target of the stolen communication equipment. Usually, for the thief, the MAC address can be found through the purchased certificate. The tracking method specifically includes:

In step S201, through the MAC address of the target, determine the hotspot AP and networking time for WI-FI connection with the target, and calculate the location information of the target according to the location of the hotspot AP;

In this embodiment, hotspot APs include hotspot APs provided in public places, such as airports, railway stations, passenger stations, and other transportation hubs, as well as hotspot APs provided by businesses, such as coffee shops, fast food restaurants, hotels, and shopping malls. and other service places, including more private hotspot APs.

Among them, when searching, a hotspot AP with a fixed location, such as a public place or a business, is preferred, followed by a mobile hotspot AP with a positioning function. That is, the hotspot AP should not only be able to store and query the MAC address and networking time connected to it, but also be able to provide its own geographic location.

In this embodiment, if the target is only connected to one hotspot AP, a range with the hotspot AP as the center is formed according to the strength of the signal. For example, if the signal is three grids, the range is 5 meters. If the signal is one grid, the range is 15 meters.

If the target is connected to three or more hotspot APs, accurate calculation can be performed according to the principle of WI-FI positioning, and the more hotspot APs are connected, the more accurate the calculation of the target's location information will be.

In step S202, according to the location information of the target and the corresponding network time, search the video space database, and obtain the relevant image data of the target or the target holder;

In this embodiment, for a theft case, it is necessary to know where the stolen target is, and who has carried out the theft, and how to sell the stolen goods after the theft. Therefore, for the target or the target holder, even a staged All holders can search in order to obtain more clues to solve the problem.

In step S203, the surrounding video surveillance is associated, relevant image data is searched, and the moving track of the target or the target holder is tracked.

Therefore, by tracking a stolen communication device, the theft gang can be smashed, and even the profit chain from theft to sale can be traced.

The present invention is mainly based on the following basic principle and general technology: that is, the MAC address of the equipment of the wireless surfer and the IP address of the networking period are kept in the network operator's place.

1 For mobile network crimes, the police have the evidence of the criminal and his network IP address at that time, and obtain the time when he uses the IP address by extracting the records of the use of the IP address in the network operator’s management database system. The location of the hotspot AP, and then further lock its real location.

2 For the theft of mobile devices, the police obtain the location of the hotspot AP with the address that accesses the Internet within a certain time range by mastering its MAC address and querying the records in the operator's online database, thereby further locking the actual location of the target;

3. Screening the target groups within the WI-FI positioning accuracy in the surveillance video, and further discovering criminal suspects, relying on multiple criminal investigation methods such as multi-point video comparison, suspect portraits, and habitual offender databases.

Positioning through video surveillance has the characteristics of high accuracy and less confusion. With the popularization of wireless networks, WI-FI positioning will become more and more easy to realize, and it will not be blocked by buildings, etc., so it will be more accurate. The present invention is just an organic combination of the two, and is more targeted for crimes such as cybercrime or theft of communication equipment.

It can be understood that those skilled in the art can make various other corresponding changes and deformations according to the technical concept of the present invention, and all these changes and deformations should belong to the protection scope of the claims of the present invention.

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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