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Object tracking method and system across sensors

A cross-sensor and sensor technology, applied in the field of object tracking and systems between sensors, can solve the problem of single sensor measurement range, color correction and complex network structure, which cannot fully take into account the environment And other issues

Active Publication Date: 2013-01-02
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The measurement range of a single sensor, such as the field of view of a camera, cannot completely take into account the environment to be monitored
The camera network composed of most cameras often does not have overlapping fields of view due to cost considerations, and when the number of cameras gradually increases, the color correction and network structure between cameras will become more complicated

Method used

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  • Object tracking method and system across sensors
  • Object tracking method and system across sensors
  • Object tracking method and system across sensors

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Embodiment Construction

[0028]Cross-sensor moving object tracking is defined in a sensor network, this sensor network includes k sensors such as C_1, C_2, ..., C_k, etc., each sensor contains nk entry and exit points, For example, within the measurement range of sensor C_1, there are n1 entry and exit points such as a_1, a_2, ..., a_n1, etc., while within the measurement range of sensor C_2, there are b_1, b_2, .. ., b_n2 etc. n2 entry and exit points, and the entry and exit points refer to the appearance or disappearance of objects from these areas within the measurement range of the sensor. Assuming that the entry and exit points within the measurement range of each sensor are well defined and the tracking of objects within the measurement range of the sensors is solved, object tracking across sensors will be equivalent to the object observed at each entry point. Questions about objects at different points in time and at different points of entry and exit.

[0029] In the embodiments disclosed in ...

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Abstract

The invention relates to an object tracking method across sensors, which is applied to a sensor network. A training phase and a detection phase are included in the method. The training phase comprises the following steps of: acquiring the measurement data of multiple sensors as a training sample through each sensor in the sensor network, planning at least one access point in the measurement ranges of multiple sensors in the sensor network, and estimating at least three characteristic functions related to the object through an automatic learning manner, wherein the three characteristic functions comprise a function for the space correlation of each sensor in the sensor network, a function of movement time difference and a function of appearance similarity. In the detection phase, the at least three characteristic functions are used as guidelines for linking object tracing to correlation.

Description

technical field [0001] The invention discloses an object tracking method and system in a sensor network. Background technique [0002] In recent years, automated monitoring systems assisted by computer vision technology have played an important role. The Video Surveillance System detects the occurrence of abnormal security incidents by analyzing the behavior of moving people in the surveillance screen, and effectively notifies security personnel to deal with them. There have been quite a lot of literature and research on the basic issues of visual surveillance, such as background subtraction, moving object detection and tracking, shadow removal, etc. High-level event detection, such as behavior analysis (behavior analysis), unattended object detection (unattended object detection), linger detection (linger detection) or jam detection (jam detection), automatic and intelligent behavior analysis expectations There may also be great demand. And a stable moving object trackin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C11/00
Inventor 黄钟贤周正全吴瑞成
Owner IND TECH RES INST