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Novel Kinect-based target pedestrian trajectory tracking method

A trajectory tracking and target technology, applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve the problems of unable to track the target pedestrian trajectory, increase the complexity of video processing, etc., achieve high recognition rate, reduce difficulty, and accurate data Effect

Inactive Publication Date: 2017-09-01
NORTHWESTERN POLYTECHNICAL UNIV
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AI Technical Summary

Problems solved by technology

[0003] However, nowadays most of the trajectory tracking of target pedestrians adopts the traditional tracking processing algorithm directly for video, which greatly increases the complexity of video processing, and in practical applications, it is often impossible to track the trajectory of target pedestrians in time

Method used

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  • Novel Kinect-based target pedestrian trajectory tracking method
  • Novel Kinect-based target pedestrian trajectory tracking method
  • Novel Kinect-based target pedestrian trajectory tracking method

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Embodiment Construction

[0015] The present invention will be described in detail below with reference to the accompanying drawings.

[0016] First, build a gait database: enable the skeleton tracking function of the SDK, and write a WPF program to obtain the gait features, obtain the feature vector data of the gait features, output these data to a txt text file, and output the bone tracking calibration at the same time color images, and color video streams at the same time.

[0017] 1) Write a WPF program to obtain gait feature vector data

[0018] Gait feature vectors include arm length, leg length, height, step length, angle between upper arm and spine, angle between forearm and spine, angle between upper arm and forearm, thigh and calf The angle between them, the distance from the center of mass of the upper body to the center of mass of the left and right arms, and the distance from the center of mass of the upper body to the center of mass of the left and right legs. The specific method of cal...

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Abstract

The invention aims at developing a gait recognition and classification system, so as to help a security department to recognize suspicious persons appearing already from a lot of surveillance videos, carry out trajectory tracking on a target pedestrian, then determine the action range of the pedestrian and provide a clue to the security department for detecting the case. The method comprises the following steps: a gait database is built, a skeleton tracking function of an SDK is opened, a WPF program to obtain gait features is written, feature vector data of the gait features are acquired, the data are outputted to a txt text document, and a color image marked through skeleton tracking at the same time and a color video stream at the same time are outputted; a gait recognition and classification system is developed, the recognition and classification system is developed through C++, and an improved nearest neighbor classification algorithm is used for realizing system classification; and trajectory tracking is carried out on the target pedestrian, which is realized by finding out the video section of the target pedestrian at the same time according to the recognized target gait data at the same time.

Description

technical field [0001] The invention relates to the design of an intelligent monitoring system for human body recognition. Specifically, a human body gait database is firstly established, and then a classification and recognition system is developed to inquire target pedestrians to track their tracks. Background technique [0002] Trajectory tracking of target pedestrians can not only help the security department identify suspicious persons who have appeared from a large number of surveillance videos, but also determine the range of action of the person, providing clues for the security department to detect cases. [0003] However, nowadays most of the trajectory tracking of target pedestrians adopts the traditional tracking processing algorithm directly for video, which greatly increases the complexity of video processing, and often cannot track the trajectory of target pedestrians in time in practical applications. Contents of the invention [0004] The purpose of the pr...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/25G06V20/52
Inventor 邓正宏黄一杰马春苗杨川张琦玮
Owner NORTHWESTERN POLYTECHNICAL UNIV
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