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An Efficient Bidirectional Tracking Method for Cross-Camera Pedestrians

A cross-camera, camera technology, applied in the field of efficient cross-camera pedestrian two-way tracking, can solve the problems of low accuracy and long time, and achieve the effect of improving speed and accuracy, fast speed and large amount of data

Active Publication Date: 2020-11-13
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In order to overcome the time-consuming and low-precision shortcomings of the traditional cross-camera pedestrian tracking method based on trajectory matching, the present invention proposes an efficient cross-camera pedestrian two-way tracking method, which can quickly and accurately obtain pedestrians in the existing cameras. full track

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Embodiment Construction

[0035] The drawings are for illustrative purposes only, and should not be construed as limitations on this patent; for those skilled in the art, it is understandable that some well-known structures and descriptions thereof in the drawings may be omitted. The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] Such as figure 1 As shown, this embodiment is an efficient cross-camera pedestrian two-way tracking method, which mainly includes three parts: pedestrian detection, pedestrian re-identification, and object tracking. Each part will be described in detail below.

[0037] 1. Pedestrian detection

[0038] To perform pedestrian detection, first establish a pedestrian detection model. The steps to establish the model are: use the YOLOv3 model pre-trained on the COCO dataset as the initial model for pedestrian detection, and then replace the last fully connected layer of the YOLOv3 ...

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Abstract

The invention discloses an efficient cross-camera pedestrian two-way tracking method, which is used to obtain the complete trajectory of pedestrians in cameras that have appeared. Including steps: (1) acquire images from the surveillance video, detect pedestrians in the images, and establish a candidate pedestrian database according to the detection results; feature, one by one to calculate the distance features between the features of the pedestrian to be checked and all the image features in the candidate pedestrian library, to obtain the best matching block of the pedestrian to be checked under other cameras, and use it as the starting position of tracking; (3) carry out the target Tracking, during the tracking process, the two-way tracking of pedestrians is completed through forward and reverse processing of video; (4) The trajectories under different cameras are integrated to obtain the final trajectory output of pedestrians. The invention has the advantages of fast speed and high precision for cross-border tracking in real scenes, and has strong engineering significance.

Description

technical field [0001] The present invention relates to the field of computer vision, and more specifically, relates to an efficient cross-camera pedestrian two-way tracking method, which is used to obtain the complete trajectory of pedestrians in cameras that have appeared. Background technique [0002] With the advancement of science and technology and the development of society, the urban population density is getting higher and higher, and the safety issue has attracted more and more attention. In order to prevent and avoid security incidents in time, a large number of surveillance cameras are installed and applied in public places. At present, the deployment of video surveillance is very extensive. How to effectively obtain pedestrian trajectory information from multiple video surveillance data is of great value to the social security system. Therefore, cross-camera pedestrian tracking has become a hot research topic in the field of computer vision. [0003] Cross-cam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/62G06T7/246
CPCG06T7/246G06T2207/20081G06T2207/10016G06V40/10G06F18/241
Inventor 赖剑煌程海杰张权
Owner SUN YAT SEN UNIV
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