A pedestrian recognition and tracking method based on video images and wireless signals

A wireless signal and pedestrian recognition technology, applied in the field of image recognition, can solve the problem of pedestrian anonymity and difficulty in determining target users, and achieve the effect of reducing complexity and matching process.

Active Publication Date: 2019-06-25
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned shortcomings in the prior art, the pedestrian recognition and tracking method based on video images and wireless signals provided by the present invention solves the problem that the anonymity of pedestrians in video images makes it difficult to determine the target user

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  • A pedestrian recognition and tracking method based on video images and wireless signals
  • A pedestrian recognition and tracking method based on video images and wireless signals
  • A pedestrian recognition and tracking method based on video images and wireless signals

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Embodiment Construction

[0049] The following describes the specific embodiments of the present invention to facilitate those skilled in the art to understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments, for those of ordinary skill in the art, as long as various changes These changes are obvious within the spirit and scope of the present invention defined and determined by the appended claims, and all inventions and creations that utilize the concept of the present invention are protected.

[0050] reference figure 1 , figure 1 Shows the flow chart of the pedestrian recognition and tracking method based on video images and wireless signals; figure 1 As shown, the method S includes steps S1 to S8.

[0051] In step S1, the positioning data of the target user is received, and the positioning area is determined according to the wireless data; this solution preferably uses wifi data as the wireless data. Due to the loss chara...

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Abstract

The invention discloses a pedestrian recognition and tracking method based on video images and wireless signals. The method comprises the steps of determining a positioning area according to wirelessdata of a target user; Extracting mobile phone sensor data of a target user and extracting a monitoring video sequence covering a positioning area in a positioning data uploading time period by takinga set threshold value as a time window; Generating a plurality of image tracks by adopting a monitoring video sequence; Drawing a pedestrian wireless track by adopting mobile phone sensor data and wireless signals, and sampling the pedestrian wireless track every sampling interval; Substituting nodes in each image track into the projection matrix to obtain track point coordinates of each image track; Performing track similarity matching by adopting a DTW algorithm according to coordinates of track points on the image track and sampling points on the pedestrian wireless track to obtain an accumulated distance value; And when all the image tracks are subjected to DTW matching, selecting all the image tracks with the minimum accumulative distance value as the tracks of the target user.

Description

Technical field [0001] The invention relates to image recognition technology, in particular to a pedestrian recognition and tracking method based on video images and wireless signals. Background technique [0002] Pedestrian recognition and tracking in video surveillance systems have been widely applied and researched in many fields such as image processing and pattern recognition, machine learning and artificial intelligence, and computer vision. [0003] Pedestrian recognition aims to identify the target user from a series of continuous video sequences. Currently, the most widely used pedestrian recognition algorithm is a feature recognition algorithm based on statistical learning. Such methods need to extract the features of pedestrians in advance to train the classifier. The device recognizes the target user. Pedestrian tracking is to establish a connection between the target user in each frame in a continuous video sequence to obtain a complete running track. The current ped...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06T7/246
Inventor 杨帆宋雅婕黄翠彦胡丁文庞琬佳
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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