多部位集合的人体检测

黄炎; 颜佳; 张虎; 邓德祥

doi:10.3788/OPE.20132111.2906

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多部位集合的人体检测

信息科学 | 更新时间：2020-08-12

- 多部位集合的人体检测
- Poselets for Pedestrian Detection
- 光学精密工程 2013年21卷第11期页码：2906-2913
- 作者机构：
  
  武汉大学电子信息学院，湖北武汉 430079
- 作者简介：
- 基金信息：
  
  国家自然科学基金面上项目(51275504)
- DOI：10.3788/OPE.20132111.2906
  中图分类号： TP391
- 收稿日期：2013-05-09，
  
  修回日期：2013-07-02，
  
  网络出版日期：2013-11-22，
  
  纸质出版日期：2013-11-15
- 稿件说明：
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黄炎, 颜佳, 张虎, 邓德祥. 多部位集合的人体检测[J]. 光学精密工程, 2013,21(11): 2906-2913

HUANG Tan, YA Jia, ZHANG Hu, DENG De-Xiang. Poselets for Pedestrian Detection[J]. Editorial Office of Optics and Precision Engineering, 2013,21(11): 2906-2913
黄炎, 颜佳, 张虎, 邓德祥. 多部位集合的人体检测[J]. 光学精密工程, 2013,21(11): 2906-2913 DOI： 10.3788/OPE.20132111.2906.

HUANG Tan, YA Jia, ZHANG Hu, DENG De-Xiang. Poselets for Pedestrian Detection[J]. Editorial Office of Optics and Precision Engineering, 2013,21(11): 2906-2913 DOI： 10.3788/OPE.20132111.2906.

摘要

采用启发式、有监督的部位筛选方法组成了一种多部位集合的检测模型，用于缓解遮挡和形变对人体检测造成的影响。该模型通过比较人体同部位上关节点间的Procrustes距离，在训练集中获取有着相似姿态的同部位样本；将梯度方向直方图（HOG）作为特征，由典型部位分别训练出判别模型；比较其在验证集上的检测效果，从中筛选出检测率高的部位和未检出的图片，再寻找对未检出图片检测率高的部位，由这些部位组成混合模型。用混合模型检测时，由Kullback-Leibler距离判断各部位在图片上的不同响应是否属于同一人，以此来确定人体的外接矩形框。在INRIA人体库上的测试表明，本文采用的模型在误检率（FPPI）为0.5时有81%的检测率，高于有77%检测率的Poselets算法。本文基于Poselets，结合HOG的特点采用了一套有监督的部位筛选机制，使得模型成员数大幅度减少，检测时间比原始方法下降了50%，同时取得了优于Poselets的检测效果。

Abstract

A part-based mixture model(Poselets) was ultilized to alleviate the problem of pedestrian detection under occlusion and articulation. Firstly

Procrustes distances between similar pedestrian parts were calculated to gather training exmaples with the same configurations. Then

common parts of frontal pedestrian described by Histogram of Oriented Gradient(HOG) were trained to get discriminative models. A test was carried out on a validation set to find out which parts were more accurate

and those pictures which were not detected formed the hard set.Other complementary parts were explored on the hard set

afterwards

all these parts formed the final Poselets detector. While detecting

Poselets were clusterd if the symmetrized KL-divergence between two Poselet activations were small. The bounding box of a pedestrian was inferred by the bounding boxes of the Poselets in a cluster. Based on the test of the INRIA pedestrian dataset

it is showed that the detection rate increases from 77% of Poselets to 81% in this paper while False Positive Per Image(FPPI) is 0.5. It is concluded that the part selection mechanism proposed in this paper promotes the detection rate with speedup rate about twice of the traditional method

meanwhile it reduces the number of models.

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references

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