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Pedestrian identification method and device based on tracking micro Doppler graph

A technology of pedestrian recognition and micro-Doppler, which is applied in the field of target recognition, can solve limited and inapplicable problems, achieve stable recognition, improve recognition accuracy, reduce cost and computational complexity

Pending Publication Date: 2021-11-23
WUXI WEIFU HIGH TECH CO LTD
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Problems solved by technology

This type of feature extraction method is limited by the RD graph, and is not suitable for multi-target situations

Method used

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  • Pedestrian identification method and device based on tracking micro Doppler graph
  • Pedestrian identification method and device based on tracking micro Doppler graph
  • Pedestrian identification method and device based on tracking micro Doppler graph

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] Embodiments of the present invention take millimeter-wave radar as an example to introduce a pedestrian identification method and device based on tracking micro-Doppler images; figure 1 As shown, a millimeter-wave radar includes a signal transmitting module, a signal receiving module, a frequency mixing module, and a processor; the signal transmitting module is used to transmit a radar detection signal to the vehicle, and the radar echo signal reflected by the target after the radar detection signal is signaled Received by the receiving module, and then processed by the frequency mixing modu...

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Abstract

The invention provides a pedestrian identification method based on a tracking micro Doppler graph. The pedestrian identification method comprises the following steps: acquiring radar signal data; processing the radar signal data to obtain radar point cloud data; performing clustering and target tracking on the radar point cloud data to obtain target trajectory information; screening based on the target trajectory information to obtain a stably existing target, extracting micro Doppler data from the stably existing target, and accumulating multiple frames of effective micro Doppler data to obtain a target micro Doppler map; selecting target speed, distance and intensity in the target trajectory information and the target micro Doppler map obtained through accumulation as effective features; training a classifier according to effective features obtained by multiple groups of radar signal data of different types of targets; and classifying the features of different types of targets by using a classifier, and screening out targets with pedestrian attributes. The method can eliminate the environmental interference, improves the recognition accuracy, and has the characteristics of high safety and multi-target applicability.

Description

technical field [0001] The invention relates to a target recognition method, in particular to a pedestrian recognition method based on tracking micro-Doppler images. Background technique [0002] With the development of the economy and the advancement of science and technology, people's demand for safety is gradually increasing. The research on pedestrian recognition technology is of great significance to the fields of intelligent driving, traffic accident prevention and security. Identify pedestrians through various sensors, so that vehicles can obtain signals to avoid pedestrians, reducing the occurrence of traffic accidents; for regional security needs, it can identify and warn of pedestrian intrusion at the border of the region. [0003] In the prior art, the algorithms for target classification based on millimeter-wave radar mainly include the following types. Some methods propose target feature extraction based on radar point cloud data, mainly including the spread of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/72G01S13/58G01S13/89G01S7/41
CPCG01S13/726G01S13/58G01S13/89G01S7/414G01S7/415
Inventor 岳靓陶烨纪永飞屈操
Owner WUXI WEIFU HIGH TECH CO LTD
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