The introduction of GIS in the security field is not accidental. There are many links between the two. Their combination will promote the development of the security industry to a large extent. At the same time, it is also a good complement and improvement to GIS itself. The partial correlation points of the two are analyzed as follows.
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Target Geographic Information and Map Data Management
Geographic informationization refers to the integration of time and space related targets in the security field according to the basic form of geographic information, forming GIS map elements containing graphic objects and attributes, and incorporating them into the spatial database for unified management in the form of data layers. The system basemap may contain one or more security domain-specific business layers, while the layer contains a series of features, one element represents a target, and the graphic object and a property record are combined. The graphic object is usually composed of basic points (such as Camera), line (such as vehicle running track), face (such as a monitoring cell), attribute table stores the auxiliary information of the target (such as camera number, name, type and other attributes, etc.), graphic object and attribute table record The rows are associated by a unique identification number to achieve mutual investigation of spatial information and attribute tables.
With the deepening and expansion of GIS applications, in order to better promote industry application and development, industry application standardization will become a necessity.
Emergency decision-making command and geography mathematical model
Emergency decision-making command generally means that when an emergency occurs, the relevant responsible department of the event needs to quickly carry out information aggregation and comprehensive evaluation and decision-making to guide a series of reaction actions, and finally solve the event with an optimal solution. GIS is able to realize the auxiliary decision-making application in various complex situations with its unique space-time visualization advantage and the perfect support for various complex geographic mathematical models.
Achieve more effective and intelligent decision support by introducing more scientific and reliable decision models.
Video Query and Virtual Reality
Video query is one of the basic functions of the monitoring platform and one of the most important functions. It is divided into real-time video query and video query here. The purpose of the query is to locate as accurately as possible. Most of the time we view live video to see if a place is normal (such as a corner), and most of the current video surveillance platforms have no query function for real-time video viewing, or Only simple queries based on attributes such as device names do not implement true spatial location-oriented precision queries. Using virtual reality technology to build a 3D model of the monitoring target area, the user selection area is included in the 3D model for query operation, and the related equipment can be found. The same reason can be used for video query, but the time condition can be added. Obviously, this search mode is more intuitive and more accurate. The introduction of virtual reality will bring users a more intuitive and easy-to-use application experience.
Mobile Monitoring and Mobile GIS
Mobile target monitoring refers to the use of a centralized monitoring platform to manage and monitor a group of mobile targets with positioning device terminals. There are two main points. First, the monitored target needs to carry the positioning device terminal. Second, the monitoring center is required. The monitored target reports the positioning information and status to the monitoring center through the wireless network. If the mobile GIS platform is configured on the monitored mobile target at the same time, the mobile target has the GIS data collection, storage, and display capabilities, which can completely change the monitoring center unilateral monitoring and the passive monitoring mode of the moving target, which is in some scenarios. It is very important. For example, when the network environment is unstable, the location information transmitted by the mobile target may be lost, resulting in incomplete location data stored in the monitoring center. In this case, the data stored in the mobile GIS carried by the mobile target may be used to complete the data. Mobile GIS can also be used for map visualization to display certain instructions issued by the monitoring center to mobile targets.
With the development of the mobile Internet era, the trend of mobility and networking has become obvious.
Cloud Video Surveillance Service and Cloud GIS
With the rise of cloud computing technology, people have initially felt its charm. For a considerable number of application scenarios, cloud services have many advantages. First, large-scale operators provide infrastructure that allows applications to eliminate large amounts of physical construction and maintenance costs. Second, the cost of using cloud services is lower than that of a separate desktop application, or less upfront investment and a fixed monthly business expense. In addition, the application of cloud service deployment is more convenient in terms of upgrade and maintenance.
At present, the cloud video service is in operation, and the front-end video capture device and the back-end storage device are unified and integrated in the cloud service mode by using the scaled hardware resources of the cloud service and the centralized and unified software technology support. To achieve cloud video surveillance services. Cloud GIS deploys GIS data and tools in the form of cloud services and provides them to users.
Security monitoring applications in the new era require the support of GIS. Therefore, security monitoring needs to cloud GIS to move toward the "cloud".
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