Multiple-mode alert analysis method
An analysis method and multi-modal technology, applied in the field of multi-modal alert analysis, can solve the problems of tedious and error-prone, and achieve the effect of improving flexibility
Inactive Publication Date: 2013-11-27
NANJING NORMAL UNIVERSITY
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Problems solved by technology
It will be very cumbersome to set the alert rules one by one in the traditional way, and it is easy to make mistakes if there is a lack of understanding of the geographical environment of the entire region
Method used
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Embodiment
[0047]The first step: related equipment preparation. Prepare a surveillance video server, several cameras, high-precision maps and remote sensing images.
[0048] Step 2: Mutual mapping between surveillance video and 2D geospatial data.
[0049] (1) In the GIS software, open the high-precision map and remote sensing image. The data has a clear geographic spatial reference. It is recommended to use the WGS84UTM projected coordinate system. The newly created layer of point type is used to manage each camera. The location information includes the X and Y of the camera in the projected coordinate system, and the attribute fields include the height, inclination, azimuth and horizontal field of view of the camera.
[0050] (2) According to the camera height, inclination angle, azimuth angle and horizontal field of view, calculate the monitoring area corresponding to the ground plane, such as figure 1 . The specific calculation formula is as follows:
[0051] figure 1 The coordi...
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The invention discloses a multi-mode alert analysis method. The multi-mode alert analysis method comprises the following steps that: monitoring videos, a large-scale map and a high-definition remote sensing image in an area are obtained, and mutual mapping of the monitor videos and two-dimensional geographic space data can be realized; according to alert requirements, linear and planar alert graphics which are drawn in a GIS form an alert area set, and allowed direction, velocity and time parameter are set, and therefore, an alert rule base can be formed, and the alert rule base is mapped to each related monitoring video; the position and direction of a dynamic target and actual movement parameters of the dynamic target under GIS mapping are obtained by means of foreground detection and target tracking; whether the movement state of the dynamic target violates the multi-mode alert rule base or not can be judged in a real-time manner; and when events violating alert rules occur, real-time alarm can be performed with highlighted graphics or alert audios in the GIS. With the method of the invention adopted, shortcomings of singleness in settings, the lack of geographic space reference, inconvenience in regional alert analysis of a traditional alter method can be eliminated; and the flexibility and integrity of regional alert can be greatly improved.
Description
technical field [0001] The present invention relates to a multi-mode alert analysis method, specifically, it is a multi-mode alert analysis method capable of flexibly setting multiple alert rules in a single camera to realize on-demand alert, which overcomes the single Disadvantages of flexibility and lack of geospatial reference. Background technique [0002] With the rapid development of social economy, human activities are becoming more and more frequent, and accidents of property loss and casualties caused by lack of security are not uncommon. Therefore, deploying video surveillance equipment in important places and setting alert rules for real-time alert are important means of regional security management. Real-time, diverse, and flexible alert methods have important practical significance. [0003] Currently, the alert analysis method is relatively single and lacks flexibility. Usually one camera corresponds to one kind of warning analysis method, if another kind of ...
Claims
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Login to View More IPC IPC(8): H04N7/18G01C15/00G06T17/05
Inventor 刘学军张兴国王思宁
Owner NANJING NORMAL UNIVERSITY