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Pedestrian rapid detection and tracking method suitable for an expressway external field shielding condition

A technology for highways and pedestrians, applied in the field of intelligent transportation, can solve problems such as insufficient practicality, incomplete technology and solutions, and complex research objects.

Pending Publication Date: 2021-04-09
CHONGQING UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fact that this field involves many disciplines and the research objects are complex, even after years of development, there are still a lot of problems to be solved.
[0003] Especially in the actual application to the highway environment, due to the diversity of pedestrian target sizes, complex and changeable environments and other factors, pedestrians are mostly blurred or obscured small targets. It has always been a difficult research point to solve this type of problem. Existing Many of the technologies and solutions are not perfect enough, far from being practical

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  • Pedestrian rapid detection and tracking method suitable for an expressway external field shielding condition
  • Pedestrian rapid detection and tracking method suitable for an expressway external field shielding condition
  • Pedestrian rapid detection and tracking method suitable for an expressway external field shielding condition

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Embodiment 1

[0045] like Figure 1-2 As shown, the pedestrian fast detection and tracking method suitable for the occlusion condition of the freeway field provided by this embodiment includes the following steps:

[0046] Step 1: Data preparation, data reconstruction and enhancement of highway monitoring video images, mainly including the following three parts;

[0047] 1) Input the height, aspect ratio and coordinate information data of the labeled pedestrian labeling frame as a sample set into K-means for clustering processing, and obtain the clustering results of the height-width ratio and position distribution of the labeling frame, according to the height The aspect ratio divides the data set into three categories: Large, Medium, and Small. According to the distribution area of ​​pedestrians, the size of the cropped picture and the approximate area of ​​​​the cropping are established.

[0048] 2) According to the distribution area counted in the above steps, the center point is rando...

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Abstract

The invention discloses a pedestrian rapid detection and tracking method suitable for an expressway external field shielding condition. The method comprises the following steps: 1, performing data reconstruction and enhancement on an expressway monitoring video image; 2, rapidly obtaining the features of high-level semantics, more prominent and large receptive fields, and the method mainly comprising the following three parts; 3, constructing an FPEM feature fusion enhancement structure suitable for small-scale target detection, wherein the FPEM feature fusion enhancement structure mainly comprises the following two parts; 4, constructing parallel DeepParts part detectors and confidence map distribution based on a probability density function; 5, designing a loss function; and 6, performing trajectory tracking prediction and state updating. The method can effectively reduce pedestrian target detection errors caused by target shielding, target reduction, target loss, target similarity, target transformation and other factors, improves the tracking precision, and meets the real-time requirements.

Description

technical field [0001] The invention relates to the field of intelligent transportation, in particular to a method for rapid detection and tracking of pedestrians under the condition of occlusion in the outer field of the expressway. Background technique [0002] At present, pedestrian target detection technology is widely used in intelligent driving, intelligent monitoring, intelligent robots and other fields. In the highway environment, the application of pedestrian detection technology and automatic warning can effectively reduce highway pedestrian accidents and improve highway operation safety. However, due to the fact that this field involves many disciplines and the research objects are complex, even after years of development, there are still a lot of problems to be solved urgently. [0003] Especially in the actual application to the highway environment, due to the diversity of pedestrian target sizes, complex and changeable environments and other factors, pedestria...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/62G06N3/04
CPCG06V40/103G06V20/52G06V2201/07G06N3/045G06F18/214G06F18/253Y02T10/40
Inventor 赵敏孙棣华唐泓
Owner CHONGQING UNIV