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Video tracking method and system on basis of positioning of sensor network

A sensor network and video tracking technology, applied in network topology, electrical components, wireless communication, etc., can solve problems such as personal occlusion effects, and achieve the effect of avoiding the effects of multipath and shadows

Active Publication Date: 2012-05-09
INST OF SOFTWARE - CHINESE ACAD OF SCI
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Problems solved by technology

[0009] The purpose of the present invention is to overcome the problems existing in the prior art, propose a video tracking method and system based on sensor network positioning, and solve the impact caused by personal occlusion

Method used

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  • Video tracking method and system on basis of positioning of sensor network
  • Video tracking method and system on basis of positioning of sensor network
  • Video tracking method and system on basis of positioning of sensor network

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with specific example and accompanying drawing.

[0030] In this embodiment, both the positioning node and the reference node in the hardware platform use the telosb node of Crossbow Company, the positioning node is powered by a battery, and the reference node is powered by a USB power supply; platform; the PTZ host is the host device that controls the PTZ; the background server is Dell OPTIPLEX 380 host, running Windows XP operating system, and the mobile monitoring terminal is Nokia N810, running Maemo operating system, a system platform based on Linux Debian . refer to figure 2 , the process of video tracking in this embodiment includes:

[0031] 1) Two positioning nodes are deployed on the personnel, and data packets are broadcast periodically, and the content of the data packets includes the positioning node number and the sequence number of the data packet.

[0032] 2) The reference node in t...

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Abstract

The invention discloses a video tracking system on the basis of positioning of a sensor network. Sensor nodes are arranged on a body of tracked personnel, in the surrounding environment and on a cloud platform host to form the sensor network; an accurate position of the personnel is obtained by utilizing a sight distance signal strength weighted centroid positioning algorithm on the basis of double nodes; then position information of the personnel is sent to a background server; a cloud platform is controlled by the background server to acquire video information around the position of the personnel; a video is transmitted to the background server through a wired mode; and a personnel tracking picture is displayed by the background server in real time. Moreover, for ensuring the video tracking system to adapt to different environments, the invention also discloses a wireless Ad Hoc network transmission strategy of a video streaming, which comprises the following steps of: carrying out video compression according to an H.264 video compression algorithm; and finally, transmitting video information of the cloud platform to a wireless mobile monitoring terminal through a wireless Ad Hoc network and displaying the tracking picture on the mobile monitoring terminal in real time.

Description

technical field [0001] The invention belongs to the technical field of wireless networks, and relates to a video tracking method and system, in particular to a sensor network positioning-based video tracking method and system. Background technique [0002] Video tracking system is a technology that observes moving objects in the monitored scene in real time, and analyzes and describes their behavior. General video tracking technology includes object detection, classification, tracking, and behavior understanding and description. The purpose of moving target detection is to extract the changing area from the background image from the sequence image. However, affected by the dynamic changes of the background image (such as light, shadow and chaotic interference, etc.), the tracking of the moving target becomes a very difficult task. . [0003] Although the Global Positioning System (Global Positioning System, GPS) has been widely used commercially, the energy consumption of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00H04W84/18
Inventor 周新运陈永乐张慧超孙利民朱红松李志
Owner INST OF SOFTWARE - CHINESE ACAD OF SCI
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