Dense pedestrian detection model based on improved YOLOv7-Tiny

ZHAO Shili; MO Hong; YANG Aonan; OUYANG Yuqi

doi:10.11959/j.issn.2096-6652.202526

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Dense pedestrian detection model based on improved YOLOv7-Tiny

Papers and Reports | 更新时间：2025-11-18

- Dense pedestrian detection model based on improved YOLOv7-Tiny
- Chinese Journal of Intelligent Science and Technology Vol. 7, Issue 3, Pages: 350-360(2025)
- 作者机构：
  
  长沙理工大学电气与信息工程学院，湖南长沙 410114
- 作者简介：
- 基金信息：
- DOI：10.11959/j.issn.2096-6652.202526
  CLC： TP391.4
- Received：12 May 2025，
  
  Revised：2025-06-02，
  
  Published：15 September 2025
- 稿件说明：
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赵世礼,莫红,杨澳男等.基于YOLOv7-Tiny的密集行人检测模型[J].智能科学与技术学报,2025,07(03):350-360.

ZHAO Shili,MO Hong,YANG Aonan,et al.Dense pedestrian detection model based on improved YOLOv7-Tiny[J].Chinese Journal of Intelligent Science and Technology,2025,07(03):350-360.
赵世礼,莫红,杨澳男等.基于YOLOv7-Tiny的密集行人检测模型[J].智能科学与技术学报,2025,07(03):350-360. DOI： 10.11959/j.issn.2096-6652.202526.

ZHAO Shili,MO Hong,YANG Aonan,et al.Dense pedestrian detection model based on improved YOLOv7-Tiny[J].Chinese Journal of Intelligent Science and Technology,2025,07(03):350-360. DOI： 10.11959/j.issn.2096-6652.202526.

摘要

针对现有密集行人检测模型的参数量大及精度低的问题，提出了一种基于YOLOv7-Tiny的跨级优化YOLOv7（you only look once version 7-tiny partial minimum cross，YOLOv7-TPMC）模型。首先，提出了结合部分卷积（partial convolution，PConv）与逐点卷积（pointwise convolution，PWConv）的部分点卷积高效层聚合网络（efficient layer aggregation networks-partial and pointwise，ELAN-PP）模块。其次，设计了一种跨级融合特征金字塔结构，通过浅层特征复用提升密集场景下行人检测的准确性。最后，为解决完整交并比（complete intersection over union，CIOU）损失函数在某些条件下定位不准确的问题，引入了最小焦点距交并比（minimum point distance and focaler-intersection over union，MF-IOU）损失函数。在WiderPerson和CrowdHuman数据集上进行实验，YOLOv7-TPMC相比于基准模型，参数量减少了20.5%，帧率（frame per second，FPS）提升了12.2%，mAP@0.5的值在WiderPerson数据集上增加了1.2%，在CrowdHuman数据集上增加了2.0%，能够较好地应用于密集行人检测。

Abstract

In response to the issues of large parameter quantity and low accuracy in the existing dense pedestrian detection models

YOLOv7-TPMC (you only look once version 7-tiny partial minimum cross) based on YOLOv7-Tiny was proposed. Firstly

the ELAN-PP (efficient layer aggregation networks-partial and pointwise) module combining PConv (partial convolution) and PWConv (pointwise convolution) was proposed. Secondly

a cross-level fusion feature pyramid structure was designed to improve the accuracy of pedestrian detection in dense scenes through shallow feature reuse. Finally

in order to solve the problem that the CIOU (complete intersection over union) loss function was not accurate in positioning under certain conditions

the MF-IOU (minimum point distance and focaler-intersection over union) loss function was introduced. Experiments were carried out on the WiderPerson and CrowdHuman datasets. Compared with the baseline model

YOLOv7-TPMC had the number of parameters reduced by 20.5%

FPS (frame per second) improved by 12.2%

and the value of mAP@0.5 increased by 1.2% on the WiderPerson dataset. It increased by 2.0% on the CrowdHuman dataset

which can be well applied to dense pedestrian detection.

关键词

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references

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