A Pedestrian Recognition Method Based on Human Head Features

A technology of pedestrian recognition and head features, applied in the field of perception, can solve problems such as inability to obtain three-dimensional information, achieve the effect of improving pedestrian recognition rate and avoiding misidentification

Active Publication Date: 2022-04-08
CHINA AUTOMOTIVE TECH & RES CENT +1
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AI Technical Summary

Problems solved by technology

[0003] In pedestrian recognition, the recognition method of single-line laser radar is generally used. However, because single-line laser radar can only obtain a cross-section of the object, it cannot obtain more complete three-dimensional information.

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  • A Pedestrian Recognition Method Based on Human Head Features
  • A Pedestrian Recognition Method Based on Human Head Features
  • A Pedestrian Recognition Method Based on Human Head Features

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Embodiment Construction

[0048] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0049] The invention will be described in detail below with reference to the accompanying drawings and examples.

[0050] The invention provides a pedestrian recognition method based on human head features. In order to accurately and comprehensively recognize pedestrians on the road, the method performs secondary classification on targets based on the geometric shape features of the human body, and uses a self-built template Matches are identified as supplementary to first-level classification.

[0051] Such as Figure 1-4 As shown, the identification method includes steps:

[0052] 1. Establish a pose template for special features and low-frequency pedestrian poses. The posture template is a human body contour map, and the human head, shoulders and leg contours are used as identification features of the ...

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Abstract

The invention provides a pedestrian recognition method based on human head features, which specifically includes the following steps: collect, define, learn and classify pedestrian contour maps with special features and low-frequency postures, and establish a posture template; use a laser scanner to obtain target objects The original image, and then preprocess the original image to obtain the contour map of the target object; use the ratio of the height and width of the circumscribed rectangle of the target overall contour map as the overall feature to classify the target; extract the target head contour according to the overall contour map Graph, its circularity is computed as a local feature for recognition to classify objects again. The present invention establishes a template for pedestrian postures with special features and low-frequency features, and utilizes the advantage that the head, shoulders and upper and lower parts of the legs are not easily blocked at the same time, avoiding the system being unable to identify pedestrians with special features; the present invention rounds the human head As the second-level classification of pedestrian recognition, the shape degree avoids the misidentification of the system and improves the pedestrian recognition rate.

Description

technical field [0001] The invention belongs to the field of perception technology, and in particular relates to a pedestrian recognition method based on human head features. Background technique [0002] In recent years, 3D laser scanning technology has developed rapidly. The 3D laser scanning system, also known as the 3D laser imaging system, is an advanced long-distance measurement technology, which can quickly and accurately obtain the spatial coordinate information of the object, and can store the collected data in the computer, and then quickly reconstruct The three-dimensional model of the object can be obtained to analyze and process it. The data information collected by the laser scanner is a point cloud composed of three-dimensional information and reflectivity of discrete data points. Each data point in the point cloud contains the distance value, angle value, reflectivity, etc. of the scanned point. Using this technology can realize the complete collection of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06V40/10G06V10/28G06V10/44G06K9/62G06V10/30
CPCG06V40/103G06V10/28G06V10/30G06V10/44G06F18/241
Inventor 李健明龚进峰戎辉唐风敏王文扬何佳华一丁郭蓬吴学易张登权
Owner CHINA AUTOMOTIVE TECH & RES CENT
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